EBU00438 READ THIS MANUAL CAREFULLY! It contains important safety information. WARNING Improper ATV use can result in SEVERE INJURY or DEATH. BEER BEER ALWAYS USE AN APPROVED HELMET AND PROTECTIVE GEAR NEVER USE ON PUBLIC ROADS NEVER CARRY PASSENGERS NEVER USE WITH DRUGS OR ALCOHOL NEVER operate: ALWAYS: without proper training or instruction. use proper riding techniques to avoid at speeds too fast for your skills or the vehicle overturns on hills and rough conditions. terrain and in turns.
EBU00776
U5TG10.book Page 1 Monday, April 7, 2003 8:50 PM EBU01200 INTRODUCTION 1- Congratulations on your purchase of the Yamaha YFZ450. It represents the result of many years of Yamaha experience in the production of fine sporting, touring, and pacesetting racing machines. With the purchase of this Yamaha, you can now appreciate the high degree of craftsmanship and reliability that have made Yamaha a leader in these fields.
U5TG10.book Page 1 Monday, April 7, 2003 8:50 PM EBU00801 IMPORTANT MANUAL INFORMATION FAILURE TO FOLLOW THE WARNINGS CONTAINED IN THIS MANUAL CAN RESULT IN SERIOUS INJURY OR DEATH.
U5TG10.book Page 2 Monday, April 7, 2003 8:50 PM EBU00011 IMPORTANT NOTICE This machine is designed and manufactured for OFF-ROAD use only. It is illegal and unsafe to operate this machine on any public street, road or highway. This machine complies with all applicable OFF-ROAD noise level and spark arrester laws and regulations in effect at the time of manufacture. Please check your local riding laws and regulations before operating this machine.
U5TG10.book Page 1 Monday, April 7, 2003 8:50 PM EBU00014 WARNING Indicates a potential hazard that could result in serious injury or death. CONTENTS 1 LOCATION OF THE WARNING AND SPECIFICATION LABELS....... 1-1 2 SAFETY INFORMATION.................. 2-1 3 DESCRIPTION AND MACHINE IDENTIFICATION ............................. 3-1 Identification number records.......... 3-2 Key identification number................ 3-2 Vehicle identification number .......... 3-3 Model label ...........................
U5TG10.book Page 2 Monday, April 7, 2003 8:50 PM 5 6 PRE-OPERATION CHECKS ........... 5-1 Front and rear brakes ..................... 5-3 Fuel ................................................. 5-4 Engine oil ........................................ 5-6 Coolant............................................ 5-7 Chain............................................... 5-8 Throttle lever ................................... 5-8 Fittings and fasteners...................... 5-8 Lights.................................
U5TG10.book Page 3 Monday, April 7, 2003 8:50 PM 8 PERIODIC MAINTENANCE AND ADJUSTMENT.................................. 8-1 Owner’s manual and tool kit............ 8-1 Periodic maintenance/ lubrication ...................................... 8-3 Panel removal and installation ........ 8-5 Engine oil and oil filter element ....... 8-7 Cooling system.............................. 8-13 Changing the coolant .................... 8-14 Spark plug inspection.................... 8-17 Air filter element cleaning...
U5TG10.book Page 4 Monday, April 7, 2003 8:50 PM Troubleshooting charts ................. 8-58 9 CLEANING AND STORAGE............ 9-1 A. Cleaning...................................... 9-1 B. Storage ....................................... 9-3 10 SPECIFICATIONS.......................... 10-1 11 NOISE REGULATION.................... 11-1 12 MAINTENANCE RECORD ............ 12-1 13 ATV LIMITED WARRANTY............ 13-1 14 YAMAHA EXTENDED SERVICE (Y.E.S.) ...........................................
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U5TG10.book Page 2 Monday, April 7, 2003 8:50 PM 2 Read and understand all of the labels on your machine. They contain important information for safe and proper operation of your ATV. 1 2 3 Never remove any labels from your ATV. If a label becomes difficult to read or comes off, a replacement label is available from your Yamaha dealer. 4 5 6 1 7 WARNING 8 UNDER 9 10 11 Operating this ATV if you are under the age of 16 increases your chance of severe injury or death.
U5TG10.book Page 3 Monday, April 7, 2003 8:50 PM 3 5 PREMIUM UNLEADED GASOLINE ONLY 91 Min.
U5TG10.book Page 1 Monday, April 7, 2003 8:50 PM EBU13381 SAFETY INFORMATION AN ATV IS NOT A TOY AND CAN BE HAZARDOUS TO OPERATE. An ATV handles differently from other vehicles including motorcycles and cars. A collision or rollover can occur quickly, even during routine maneuvers such as turning and riding on hills or over obstacles, if you fail to take proper precautions.
U5TG10.book Page 2 Monday, April 7, 2003 8:50 PM ● ● ● ● ● ● ● ● ● ● Always avoid operating an ATV on any paved surfaces, including sidewalks, driveways, parking lots and streets. Never operate an ATV on any public street, road or highway, even a dirt or gravel one. Never operate an ATV without wearing an approved motorcycle helmet that fits properly. You should also wear eye protection (goggles or face shield), gloves, boots, a long-sleeved shirt or a jacket, and long pants.
U5TG10.book Page 3 Monday, April 7, 2003 8:50 PM ● ● ● ● ● Always follow proper procedures for turning as described in this manual. Practice turning at low speeds before attempting to turn at faster speeds. Do not turn at excessive speed. Never operate the ATV on hills too steep for the ATV or for your abilities. Practice on smaller hills before attempting larger hills. Always follow proper procedures for climbing hills as described in this manual.
U5TG10.book Page 4 Monday, April 7, 2003 8:50 PM ● ● ● ● Always use proper procedures if you stall or roll backwards when climbing a hill. To avoid stalling, use the proper gear and maintain a steady speed when climbing a hill. If you stall or roll backwards, follow the special procedure for braking described in this manual. Dismount on the uphill side or to a side if pointed straight uphill. Turn the ATV around and remount, following the procedure described in this manual.
U5TG10.book Page 5 Monday, April 7, 2003 8:50 PM ● ● ● ● Always use the size and type of tires specified in this manual. Always maintain proper tire pressure as described in this manual. Never modify an ATV through improper installation or use of accessories. Never exceed the stated load capacity for an ATV. Cargo should be properly distributed and securely attached. Reduce speed and follow instructions in this manual for carrying cargo or pulling a trailer. Allow greater distance for braking.
U5TG10.book Page 6 Monday, April 7, 2003 8:50 PM WARNING When transporting the ATV in another vehicle, be sure it is kept upright and that the fuel cock is in the “OFF” position. Otherwise, fuel may leak out of the carburetor or fuel tank. WHAT CAN HAPPEN Gasoline is poisonous and can cause injuries. HOW TO AVOID THE HAZARD If you should swallow some gasoline or inhale a lot of gasoline vapor, or get some gasoline in your eyes, see your doctor immediately.
U5TG10.book Page 7 Monday, April 7, 2003 8:50 PM WARNING POTENTIAL HAZARD Starting or running the engine in a closed area. WHAT CAN HAPPEN Exhaust fumes are poisonous and may cause loss of consciousness and death within a short time. HOW TO AVOID THE HAZARD Always operate your ATV in an area with adequate ventilation.
U5TG10.book Page 1 Monday, April 7, 2003 8:50 PM EBU00032 DESCRIPTION AND MACHINE IDENTIFICATION 1- 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. Spark arrester Seat Fuel tank cap Radiator cap Oil filter element Brake pedal Headlights Fuel cock Starter (choke) Throttle stop screw Fuse 12. 13. 14. 15. 16. 17. 18. 19. 20. 21.
U5TG10.book Page 2 Monday, April 7, 2003 8:50 PM EBU00600 EBU00035 Identification number records Record the key identification number, vehicle identification number and model label information in the spaces provided for assistance when ordering spare parts from a Yamaha dealer or for reference in case the vehicle is stolen. 1. KEY IDENTIFICATION NUMBER: Key identification number The key identification number is stamped on the key as shown in the following illustration.
U5TG10.book Page 3 Monday, April 7, 2003 8:50 PM EBU00036 EBU00787 Vehicle identification number The vehicle identification number is stamped into the frame. Model label The model label is affixed to the location in the illustration. Record the information on this label in the space provided. This information will be needed to order spare parts from your Yamaha dealer. 1. Vehicle identification number NOTE: The vehicle identification number is used to identify your machine. 1.
U5TG10.book Page 1 Monday, April 7, 2003 8:50 PM EBU00039 CONTROL FUNCTIONS 1- 1 WARNING 2 Indicates a potential hazard that could result in serious injury or death. 3 4 EBU00420 5 Main switch Functions of the respective switch positions are as follows: ON: The engine can be started only at this position. OFF: All electrical circuits are switched off. The key can be removed in this position.
U5TG10.book Page 2 Monday, April 7, 2003 8:50 PM EBU00802 EBU13850 Indicator and warning lights Coolant temperature warning light “ ” When the coolant temperature reaches a specified level, this light comes on to warn that the coolant temperature is too hot. If the light comes on during operation, stop the engine as soon as it is safe to do so and allow the engine to cool down for about 10 minutes. The electrical circuit of the warning light can be checked according to the following procedures. 1.
U5TG10.book Page 3 Monday, April 7, 2003 8:50 PM CAUTION: _ ● ● The engine may overheat if the ATV is overloaded. If this happens, reduce the load to specification. Restart after making sure that the light is off. Continuous use while the light is on may cause damage to the engine.
U5TG10.book Page 4 Monday, April 7, 2003 8:50 PM EBU00053 Handlebar switches NOTE: The headlights and the taillight can be turned on only when the engine is started. _ _ EBU11580 Engine stop switch “ENG. STOP” Make sure that the engine stop switch is in the “RUN” position before starting the engine. The engine stop switch controls ignition and can be used at all times to stop the engine, especially in an emergency. The engine will not start or run when the engine stop switch is turned to “OFF”. 1.
U5TG10.book Page 5 Monday, April 7, 2003 8:50 PM EBU00062 Throttle lever Once the engine is running, movement of the throttle lever will increase the engine speed. Regulate the speed of the machine by varying the throttle position. Because the throttle is spring-loaded, the machine will decelerate, and the engine will return to an idle any time the hand is removed from the throttle lever. Before starting the engine, check the throttle to be sure it is operating smoothly.
U5TG10.book Page 6 Monday, April 7, 2003 8:50 PM EBU01159 Speed limiter The speed limiter keeps the throttle from fully opening, even when the throttle lever is pushed to the maximum. Turning in the adjusting screw limits the maximum engine power available and decreases the maximum speed of the ATV. 1. Locknut 2. Adjusting screw WARNING POTENTIAL HAZARD Improper adjustment of the speed limiter and throttle. WHAT CAN HAPPEN The throttle cable could be damaged. Improper throttle operation could result.
U5TG10.book Page 7 Monday, April 7, 2003 8:50 PM EBU00069 EBU13860 Clutch lever The clutch lever is located on the left handlebar and the ignition circuit cut-off system is incorporated in the clutch lever holder. Pull the clutch lever to the handlebar to disengage the clutch, and release the lever to engage the clutch. The lever should be pulled rapidly and released slowly for smooth clutch operation. (Refer to “Starting a cold engine” for a description of the ignition circuit cut-off system.
U5TG10.book Page 8 Monday, April 7, 2003 8:50 PM EBU00989 Brake pedal The brake pedal is located on the right side of the machine. Push down on the pedal to apply the rear brake. The brake lever is equipped with a position adjusting bolt. To adjust the distance between the brake lever and the handlebar grip, hold the lever away from the handlebar so it does not contact the adjusting bolt, loosen the locknut, turn the adjusting bolt, and then tighten the locknut. 1.
U5TG10.book Page 9 Monday, April 7, 2003 8:50 PM EBU13870 Parking brake lever Use the parking brake when you have to start the engine or park the machine, especially on a slope. To apply the parking brake, move the parking brake lever in direction a. To release the parking brake, move the parking brake lever in direction b. 1. Parking brake lever (Unlocked position) 1.
U5TG10.book Page 10 Monday, April 7, 2003 8:50 PM EBU00820 Shift pedal This machine is equipped with a constantmesh 5-speed transmission. The shift pedal is located on the left side of the engine and is used in combination with the clutch when shifting. WARNING POTENTIAL HAZARD Improper use of the parking brake. WHAT CAN HAPPEN The ATV could start moving unexpectedly if the parking brake is not applied before starting the engine. This could cause loss of control or a collision.
U5TG10.book Page 11 Monday, April 7, 2003 8:50 PM EBU00092 EBU00093 Fuel tank cap Remove the fuel tank cap by turning it counterclockwise. Fuel cock The fuel cock supplies fuel from the fuel tank to the carburetor. The fuel cock has three positions. OFF: With the lever in this position, fuel will not flow. Always turn the lever to this position when the engine is not running. ON: With the lever in this position, fuel flows to the carburetor. Normal riding is done with the lever in this position.
U5TG10.book Page 12 Monday, April 7, 2003 8:50 PM EBU00095 Starter (choke) “ ” Starting a cold engine requires a richer air-fuel mixture. A separate starter circuit supplies this mixture. Move in direction a to turn on the starter (choke). Move in direction b to turn off the starter (choke). Refer to “Starting a cold engine” for proper operation. (See page 6-1.) 1.
U5TG10.book Page 13 Monday, April 7, 2003 8:50 PM EBU01010 Seat To remove the seat, insert your hand between the rear of the seat and the rear fender, pull the seat lock lever upward and pull up the seat at the rear. To install the seat, insert the projections on the front of the seat into the seat holders and push down on the seat at the rear. NOTE: Make sure that the seat is securely fitted. _ _ 1. Seat lock lever 1. Projection (× 2) 4-13 2.
E-4.fm Page 14 Wednesday, April 9, 2003 11:36 AM EBU13881* Front shock absorber adjustment The spring preload, rebound damping and compression damping forces of the front shock absorbers can be adjusted to suit the rider’s weight and the riding conditions. ● ● WARNING Do not deform or damage the cylinders in any way. Do not dispose of a damaged or worn out shock absorber yourself. Take the unit to a Yamaha dealer. Adjust the spring preload as follows. 1. Loosen the locknut. 2.
U5TG10.book Page 15 Monday, April 7, 2003 8:50 PM NOTE: A special wrench can be obtained at a Yamaha dealer to make this adjustment. _ _ 3. The length of the spring (installed) changes 1.5 mm (0.06 in) per turn of the adjusting nut. Measurement A: Installed length: Minimum (hard): 245 mm (9.6 in) Standard: 255 mm (10.0 in) Maximum (soft): 256.5 mm (10.1 in) A. Spring length 4. Tighten the locknut to the specified torque. Tightening torque: Locknut: 30 Nm (3.
E-4.fm Page 16 Wednesday, April 9, 2003 11:37 AM Adjust the rebound damping force as follows. Turn the rebound damping force adjusting screw in direction a to increase the rebound damping force and in direction b to decrease the rebound damping force. Adjust the compression damping force as follows. Turn the compression damping force adjusting screw in direction a to increase the compression damping force and in direction b to decrease the compression damping force. 1.
U5TG10.book Page 17 Monday, April 7, 2003 8:50 PM CAUTION: HOW TO AVOID THE HAZARD Never touch the compression damping force adjuster, rebound damping force adjuster or oil reservoir with your bare hand or skin until suspension components have cooled. _ Never turn an adjusting mechanism beyond the minimum and maximum settings.
U5TG10.book Page 18 Monday, April 7, 2003 8:50 PM EBU13891 Rear shock absorber adjustment The spring preload, rebound damping and compression damping forces of the rear shock absorber can be adjusted to suit the rider’s weight and the riding conditions. ● ● WARNING Do not deform or damage the cylinder in any way. Do not dispose of a damaged or worn out shock absorber yourself. Take the unit to a Yamaha dealer. Adjust the spring preload as follows. 1. Remove the seat.
U5TG10.book Page 19 Monday, April 7, 2003 8:50 PM 3. Disconnect the hose, and then remove the air filter case by removing the bolts. 1. Bolt (× 4) 1. Hose 4-19 2.
U5TG10.book Page 20 Monday, April 7, 2003 8:50 PM 4. Loosen the locknut. 5. Turn the adjusting nut in direction a to increase the spring preload and in direction b to decrease the spring preload. Measurement A: Installed length: Minimum (hard): 237 mm (9.3 in) Standard: 244 mm (9.6 in) Maximum (soft): 251 mm (9.9 in) 1. Spring preload adjusting nut 2. Locknut 3. Special wrench A. Spring length NOTE: A special wrench can be obtained at a Yamaha dealer to make this adjustment. _ 7.
U5TG10.book Page 21 Monday, April 7, 2003 8:50 PM Tightening torque: Locknut: 45 Nm (4.5 m·kgf, 33 ft·lbf) Minimum (soft): Adjusting screw fully turned out Standard: Adjusting screw 1 3/4 turns out from the fully turned in position Maximum (hard): Adjusting screw fully turned in CAUTION: _ Always tighten the locknut against the adjusting nut and tighten it to the specified torque. NOTE: Make sure that the position indicator marks are aligned when the shock absorber is set to the standard setting.
U5TG10.book Page 22 Monday, April 7, 2003 8:50 PM Adjust the compression damping force as follows. 1. Remove the seat. (See page 4-13 for seat removal and installation procedures.) 2. Turn the compression damping force adjusting screw in direction a to increase the compression damping force and in direction b to decrease the compression damping force. 1. Compression damping force adjusting screw 2.
U5TG10.book Page 23 Monday, April 7, 2003 8:50 PM WARNING POTENTIAL HAZARD Suspension components become hot during operation. WHAT CAN HAPPEN You could be burned. HOW TO AVOID THE HAZARD Never touch the compression damping force adjuster, rebound damping force adjuster or oil reservoir with your bare hand or skin until suspension components have cooled. EBU00112 WARNING Indicates a potential hazard that could result in serious injury or death.
U5TG10.book Page 1 Monday, April 7, 2003 8:50 PM PRE-OPERATION CHECKS 1- Before using this machine, check the following points: ITEM ROUTINE PAGE Front brake • Check operation, lever free play, fluid level and fluid leakage. • Fill with DOT 4 brake fluid if necessary. 5-3–5-4, 8-29–8-33 Rear brake • Check operation, fluid level and fluid leakage. • Fill with DOT4 brake fluid if necessary. 5-3–5-4, 8-30–8-32, 8-34 Clutch • Check operation, condition and lever free play.
U5TG10.book Page 2 Monday, April 7, 2003 8:50 PM WARNING 1 POTENTIAL HAZARD Failure to inspect the ATV before operating. Failure to properly maintain the ATV. WHAT CAN HAPPEN Increases the possibility of an accident or equipment damage. HOW TO AVOID THE HAZARD Always inspect your ATV each time you use it to make sure the ATV is in safe operating condition. Always follow the inspection and maintenance procedures and schedules described in the Owner’s Manual.
U5TG10.book Page 3 Monday, April 7, 2003 8:50 PM EBU01166 Brake fluid leakage Check to see if any brake fluid is leaking out of the pipe joints or brake fluid reservoirs. Apply the brakes firmly for one minute. If there is any leakage, have a Yamaha dealer inspect the brake system. Front and rear brakes Brake lever and brake pedal ● Check that there is no free play in the brake lever. If there is free play, have a Yamaha dealer inspect the brake system. ● Check for correct brake pedal height.
U5TG10.book Page 4 Monday, April 7, 2003 8:50 PM EBU13900 Fuel Make sure there is sufficient gasoline in the tank. WARNING POTENTIAL HAZARD Riding with improperly operating brakes. WHAT CAN HAPPEN You could lose braking ability, which could lead to an accident. HOW TO AVOID THE HAZARD Always check the brakes at the start of every ride. Do not ride the ATV if you find any problem with the brakes.
U5TG10.book Page 5 Monday, April 7, 2003 8:50 PM Your Yamaha engine has been designed to use premium unleaded gasoline with a pump octane number ([R+M]/2) of 91 or higher, or research octane number of 95 or higher. If knocking or pinging occurs, use a different brand of gasoline. Unleaded fuel will give you longer spark plug life and reduced maintenance cost. Gasohol There are two types of gasohol; gasohol containing ethanol and that containing methanol.
U5TG10.book Page 6 Monday, April 7, 2003 8:50 PM EBU10842 Engine oil Make sure the engine oil is at the specified level. Add oil as necessary. (See page 8-7.) WARNING POTENTIAL HAZARD Improper care when refueling. WHAT CAN HAPPEN Fuel can spill, which can cause a fire and severe injury. Fuel expands when it heats up. If the fuel tank is overfilled, fuel could spill out due to heat from the engine or the sun. HOW TO AVOID THE HAZARD Do not overfill the fuel tank.
U5TG10.book Page 7 Monday, April 7, 2003 8:50 PM EBU12530 Coolant Check the coolant level in the coolant reservoir when the engine is cold. (The coolant level will vary with engine temperature.) The coolant level is satisfactory if it is between the minimum and maximum level marks on the coolant reservoir. If the coolant level is at or below the minimum level mark, add distilled water to bring the level up to maximum level mark. Change the coolant every two years. (See pages 8-13–8-17 for details.
U5TG10.book Page 8 Monday, April 7, 2003 8:50 PM EBU00498 EBU01003 Chain Check the general condition of the chain and check the chain slack before every ride. Lubricate and adjust the chain as necessary. (See pages 8-39–8-42 for details.) Lights Check the headlights and tail/brake light to make sure they are in working condition. Repair as necessary for proper operation. EBU01170 Switches Check the operation of all switches. Have a Yamaha dealer repair as necessary for proper operation.
U5TG10.book Page 9 Monday, April 7, 2003 8:50 PM EBU00157 Tires 2. The tires should be set to the recommended pressure: ● Recommended tire pressure Front 30 kPa (0.30 kgf/cm2, 4.4 psi) Rear 35 kPa (0.35 kgf/cm2, 5.0 psi) ● Check and adjust tire pressures when the tires are cold. ● Tire pressures must be equal on both sides. 3. Tire pressure below the minimum specified could cause the tire to dislodge from the rim under severe riding conditions. The following are minimums: Front 27 kPa (0.27 kgf/cm2, 3.
U5TG10.book Page 10 Monday, April 7, 2003 8:50 PM Set pressure with tires cold. Set tire pressures to the following specifications: 4. Use no more than the following pressures when seating the tire beads. Front 250 kPa (2.5 kgf/cm2, 36 psi) Rear 250 kPa (2.5 kgf/cm2, 36 psi) Higher pressures may cause the tire to burst. Inflate the tires very slowly and carefully. Fast inflation could cause the tire to burst. Recommended pressure Minimum Maximum Front 30 kPa (0.30 kgf/cm2, 4.4 psi) 27 kPa (0.
U5TG10.book Page 11 Monday, April 7, 2003 8:50 PM EBU00160 Tire wear limit When the tire groove decreases to 3 mm (0.12 in) due to wear, replace the tire. a.
U5TG10.book Page 1 Monday, April 7, 2003 8:50 PM EBU00161 EBU13911 OPERATION Starting a cold engine 1- WARNING WARNING Indicates a potential hazard that could result in serious injury or death. WARNING POTENTIAL HAZARD Operating ATV without being familiar with all controls. WHAT CAN HAPPEN Loss of control, which could cause an accident or injury. HOW TO AVOID THE HAZARD Read the Owner’s Manual carefully. If there is a control or function you do not understand, ask your Yamaha dealer.
U5TG10.book Page 2 Monday, April 7, 2003 8:50 PM Position 3: Cold engine startambient temperature above 25 °C (80 °F) and warm engine start position. NOTE: This model is equipped with an ignition circuit cut-off system. The engine can be started under the following conditions. ● When the transmission is in neutral. At this time the neutral indicator light should come on. If the light does not come on, ask a Yamaha dealer to inspect it. ● When the clutch is disengaged with the transmission in any position.
U5TG10.book Page 3 Monday, April 7, 2003 8:50 PM NOTE: If the engine fails to start, release the start switch, then push it again. Pause a few seconds before the next attempt. Each cranking should be as short as possible to preserve battery energy. Do not crank the engine more than 10 seconds on each attempt. CAUTION: _ _ See the “Engine break-in” section prior to operating the engine for the first time. _ _ 7.
U5TG10.book Page 4 Monday, April 7, 2003 8:50 PM EBU00180 EBU01981 Starting a warm engine To start a warm engine, refer to the “Starting a cold engine” section. The starter (choke) should not be used. The throttle should be opened slightly. Shifting This model has a 5-speed forward transmission. The transmission allows you to control the amount of power you have available at a given speed or for starting, accelerating, climbing hills, etc.
U5TG10.book Page 5 Monday, April 7, 2003 8:50 PM CAUTION: _ ● ● Do not coast for long periods with the engine off, and do not tow the machine a long distance. Even in neutral position, the transmission is only properly lubricated when the engine is running. Inadequate lubrication may cause damage. Always use the clutch when changing gears. The engine, transmission and drive train are not designed to withstand the shock of forced shifting and can be damaged by shifting without the clutch.
U5TG10.book Page 6 Monday, April 7, 2003 8:50 PM EBU14190 To start out and accelerate: 1. Release the throttle lever, and then release the parking brake. 8. Follow the same procedure when shifting to the next higher gear. WARNING CAUTION: POTENTIAL HAZARD Opening the throttle abruptly or releasing the clutch lever too quickly. WHAT CAN HAPPEN The machine could wheelie. This would increase the chance of an accident, including overturn. HOW TO AVOID THE HAZARD Open the throttle gradually.
U5TG10.book Page 7 Monday, April 7, 2003 8:50 PM EBU00207 EBU02092 To decelerate: When slowing down or stopping, release the throttle and apply the brakes smoothly and evenly. As you slow down, shift to a lower gear. Be sure that the engine has sufficiently slowed before engaging a lower gear. Improper use of the brakes or shifting can cause the tires to lose traction, reducing control and increasing the possibility of an accident.
U5TG10.book Page 8 Monday, April 7, 2003 8:50 PM EBU00211 Parking When parking, stop the engine and shift into neutral. Turn the fuel cock to “OFF” and apply the parking brake. Each full throttle acceleration sequence should be followed with a substantial rest period for the engine by cruising at lower r/min so the engine can rid itself of the temporary build up of heat. If any abnormality is noticed during this period, consult a Yamaha dealer. 0–10 hours: Avoid continuous operation above half throttle.
U5TG10.book Page 9 Monday, April 7, 2003 8:50 PM EBU14200 Parking on a slope 3. Stop the engine by setting the engine stop switch to “OFF”. 4. With the front and rear brakes applied, pull the clutch lever, shift into 1st gear, and then slowly release the clutch lever, brake lever and brake pedal. WARNING POTENTIAL HAZARD Parking on a hill or other incline. WHAT CAN HAPPEN The ATV could roll out of control, increasing the chance of an accident.
U5TG10.book Page 10 Monday, April 7, 2003 8:50 PM EBU00221 Accessories and loading ● EBU00222 Accessories Accessories can affect the handling and control of your ATV. Keep the following in mind when considering an accessory or operating an ATV which has accessories. ● Choose only accessories designed for your ATV. Your Yamaha dealer has a variety of genuine Yamaha accessories. Other accessories may also be available on the market.
U5TG10.book Page 11 Monday, April 7, 2003 8:50 PM EBU00584 Loading As originally equipped, this ATV is not designed to carry cargo or tow a trailer. If you choose to add accessories so that you can carry cargo or tow a trailer, you must use common sense and good judgment. Keep the following points in mind: ● Never exceed the weight limits shown. An overloaded ATV can be unstable.
U5TG10.book Page 12 Monday, April 7, 2003 8:50 PM WARNING POTENTIAL HAZARD Overloading this ATV or carrying or towing cargo improperly. WHAT CAN HAPPEN Could cause changes in vehicle handling which could lead to an accident. HOW TO AVOID THE HAZARD Never exceed the stated load capacity for this ATV. Cargo should be properly distributed and securely attached. Reduce speed when carrying cargo or pulling a trailer. Allow greater distance for braking.
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U5TG10.book Page 3 Monday, April 7, 2003 8:50 PM WARNING _ Indicates a potential hazard that could result in serious injury or death. tion to the safety information on pages 2-1– 2-7. Please also read all caution and warning labels on your ATV. GETTING TO KNOW YOUR ATV This ATV is intended for recreational use by experienced operators only. Even though you are an experienced operator of all other all terrain vehicles or motorcycles, riding the ATV requires special skills acquired through practice.
U5TG10.book Page 4 Monday, April 7, 2003 8:50 PM RIDE WITH CARE AND GOOD JUDGEMENT HOW TO AVOID THE HAZARD Beginning and inexperienced operators should complete the certified training course offered by Yamaha. They should then regularly practice the skills learned in the course and the operating techniques described in this Owner’s Manual. For more information about the training course, contact an authorized ATV dealer or call 1-800-887-2887. Get training if you are inexperienced.
U5TG10.book Page 5 Monday, April 7, 2003 8:50 PM Not recommended for children under 16 years of age. WARNING POTENTIAL HAZARD Failure to follow the age recommendations for this ATV. WHAT CAN HAPPEN Use by children of ATVs that are not recommended for their age can lead to severe injury or death of the child. HOW TO AVOID THE HAZARD A child under 16 should never operate an ATV with engine size greater than 90cc.
U5TG10.book Page 6 Monday, April 7, 2003 8:50 PM This ATV is designed to carry operator only–passengers prohibited. WARNING POTENTIAL HAZARD Carrying a passenger on this ATV. WHAT CAN HAPPEN Greatly reduces your ability to balance and control this ATV. Could cause an accident, resulting in harm to you and/ or your passenger. HOW TO AVOID THE HAZARD Never carry a passenger. The long seat is to allow the operator to shift position as needed during operation. It is not for carrying passengers.
U5TG10.book Page 7 Monday, April 7, 2003 8:50 PM Apparel Operating without protective clothing increases your chances of severe injury in the event of an accident. HOW TO AVOID THE HAZARD Always wear an approved motorcycle helmet that fits properly. You should also wear: eye protection (goggles or face shield) gloves boots long-sleeved shirt or jacket long pants WARNING POTENTIAL HAZARD Operating this ATV without wearing an approved motorcycle helmet, eye protection and protective clothing.
U5TG10.book Page 8 Monday, April 7, 2003 8:50 PM Do not operate after consuming alcohol or drugs. Operator’s performance capability is reduced by the influence of alcohol or drugs. WARNING POTENTIAL HAZARD Operating this ATV after consuming alcohol or drugs. WHAT CAN HAPPEN Could seriously affect your judgment. Could cause you to react more slowly. Could affect your balance and perception. Could result in an accident. HOW TO AVOID THE HAZARD Never consume alcohol or drugs before or while driving this ATV.
U5TG10.book Page 9 Monday, April 7, 2003 8:50 PM Pre-operation checks Always perform the pre-operation checks listed on page 5-1 before riding for safety and proper care of the ATV. WARNING POTENTIAL HAZARD Operating this ATV with improper tires, or with improper or uneven tire pressure. WHAT CAN HAPPEN Use of improper tires on this ATV, or operation of this ATV with improper or uneven tire pressure, may cause loss of control, increasing your risk of an accident.
U5TG10.book Page 10 Monday, April 7, 2003 8:50 PM Speed limiter For riders inexperienced with this model, this model is equipped with a speed limiter in the throttle lever housing. The speed limiter limits the power and top speed of the ATV. Turning the adjusting screw in decreases the top speed, and turning it out increases the top speed. (See page 4-6 for details.) WARNING _ Indicates a potential hazard that could result in serious injury or death.
U5TG10.book Page 11 Monday, April 7, 2003 8:50 PM Loading and accessories As originally equipped, this ATV is not designed to carry cargo or tow a trailer. If you choose to add accessories so that you can carry cargo or tow a trailer, you must use common sense and good judgment. Use extra caution when riding the ATV with additional loads, such as accessories or cargo. The ATV’s handling may be adversely affected. Reduce your speed when adding additional loads.
U5TG10.book Page 12 Monday, April 7, 2003 8:50 PM During operation Always keep your feet on the footboards during operation. Otherwise your feet may contact the rear wheels. WARNING POTENTIAL HAZARD Removing hands from handlebars or feet from footboards during operation. WHAT CAN HAPPEN Removing even one hand or foot can reduce your ability to control the ATV or could cause you to lose your balance and fall off of the ATV.
U5TG10.book Page 13 Monday, April 7, 2003 8:50 PM Avoid wheelies and jumping. You may lose control of the ATV or overturn. WARNING POTENTIAL HAZARD Attempting wheelies, jumps, and other stunts. WHAT CAN HAPPEN Increases the chance of an accident, including an overturn. HOW TO AVOID THE HAZARD Never attempt stunts, such as wheelies or jumps. Don’t try to show off.
U5TG10.book Page 14 Monday, April 7, 2003 8:50 PM Modifications WARNING POTENTIAL HAZARD Operating this ATV with improper modifications. WHAT CAN HAPPEN Improper installation of accessories or modification of this vehicle may cause changes in handling which in some situations could lead to an accident. HOW TO AVOID THE HAZARD Never modify this ATV through improper installation or use of accessories.
U5TG10.book Page 15 Monday, April 7, 2003 8:50 PM Exhaust system The exhaust system on the ATV is very hot during and following operation. To prevent burns, avoid touching the exhaust system. Park the ATV in a place where pedestrians or children are not likely to touch it. WARNING POTENTIAL HAZARD Hot exhaust system. WHAT CAN HAPPEN Dry grass or brush or other combustible material accumulated around the engine area could catch fire.
U5TG10.book Page 16 Monday, April 7, 2003 8:50 PM BE CAREFUL WHERE YOU RIDE This ATV is designed for off-road use only. Riding on paved surfaces can cause loss of control. WARNING POTENTIAL HAZARD Operating this ATV on paved surfaces. WHAT CAN HAPPEN ATVs are designed for off-road use only. Paved surfaces may seriously affect handling and control of the ATV, and may cause the vehicle to go out of control.
U5TG10.book Page 17 Monday, April 7, 2003 8:50 PM Do not ride on any public road, street, or highway. Riding on public roads can result in collisions with other vehicles. WARNING POTENTIAL HAZARD Operating this ATV on public streets, roads or highways. WHAT CAN HAPPEN You can collide with another vehicle. HOW TO AVOID THE HAZARD Never operate this ATV on any public street, road or highway, even a dirt or gravel one. In many states it is illegal to operate ATVs on public streets, roads and highways.
U5TG10.book Page 18 Monday, April 7, 2003 8:50 PM Know the terrain where you ride. Ride cautiously in unfamiliar areas. Stay alert for holes, rocks, or roots in the terrain, and other hidden hazards which may cause the ATV to upset. WARNING POTENTIAL HAZARD Failure to use extra care when operating this ATV on unfamiliar terrain. WHAT CAN HAPPEN You can come upon hidden rocks, bumps, or holes, without enough time to react. Could result in the ATV overturning or going out of control.
U5TG10.book Page 19 Monday, April 7, 2003 8:50 PM WARNING POTENTIAL HAZARD Failure to use extra care when operating on excessively rough, slippery or loose terrain. WHAT CAN HAPPEN Could cause loss of traction or vehicle control, which could result in an accident, including an overturn. HOW TO AVOID THE HAZARD Do not operate on excessively rough, slippery or loose terrain until you have learned and practiced the skills necessary to control the ATV on such terrain.
U5TG10.book Page 20 Monday, April 7, 2003 8:50 PM When riding in an area where you might not easily be seen, such as desert terrain, mount a caution flag on the ATV. DO NOT use the flag pole bracket as a trailer hitch. WHAT CAN HAPPEN You could be in a collision. You could be injured. HOW TO AVOID THE HAZARD Always mount a caution flag on the ATV to make you more visible. Watch carefully for other vehicles. Do not ride in areas posted “no trespassing”.
U5TG10.book Page 21 Monday, April 7, 2003 8:50 PM With the engine idling, pull the clutch lever to disengage the clutch and shift into 1st gear, and then release the parking brake. Open the throttle gradually, and at the same time, release the clutch lever slowly. Once the ATV has attained adequate speed, release the throttle lever and at the same time, quickly pull in the clutch lever and shift into 2nd gear. Open the throttle part way and gradually release the clutch.
U5TG10.book Page 22 Monday, April 7, 2003 8:50 PM When slowing down or stopping, release the throttle and apply the brakes smoothly and evenly. As you slow down, shift to a lower gear. Be sure that the engine has sufficiently slowed before engaging a lower gear. Improper use of the brakes or shifting can cause the tires to lose traction, reducing control and increasing the possibility of an accident. WARNING POTENTIAL HAZARD Opening the throttle abruptly or releasing the clutch lever too quickly.
U5TG10.book Page 23 Monday, April 7, 2003 8:50 PM TURNING YOUR ATV To achieve maximum traction while riding off-road, the two rear wheels are mounted solidly on one axle and turn together at the same speed. Therefore, unless the wheel on the inside of the turn is allowed to slip or lose some traction, the ATV will resist turning. A special turning technique must be used to allow the ATV to make turns quickly and easily. It is essential that this skill be learned first at low speed.
U5TG10.book Page 24 Monday, April 7, 2003 8:50 PM Once you have learned this technique you should be able to perform it at higher speeds or in tighter curves. Improper riding procedures such as abrupt throttle changes, excessive braking, incorrect body movements, or too much speed for the sharpness of the turn may cause the ATV to tip. If the ATV begins to tip over to the outside while negotiating a turn, lean more to the inside.
U5TG10.book Page 25 Monday, April 7, 2003 8:50 PM CLIMBING UPHILL Use proper riding techniques to avoid vehicle overturns on hills. Be sure that you can maneuver your ATV well on flat ground before attempting any incline and then practice riding first on gentle slopes. Try more difficult climbs only after you have developed your skill. In all cases avoid inclines with slippery or loose surfaces, or obstacles that might cause you to lose control.
U5TG10.book Page 26 Monday, April 7, 2003 8:50 PM WARNING An obstacle, a sharp drop, or another vehicle or person could be on the other side of the hill. POTENTIAL HAZARD Climbing hills improperly. WHAT CAN HAPPEN Could cause loss of control or cause the ATV to overturn. HOW TO AVOID THE HAZARD Always follow proper procedures for climbing hills as described in this Owner’s Manual. Always check the terrain carefully before you start up any hill.
U5TG10.book Page 27 Monday, April 7, 2003 8:50 PM If you are climbing a hill and you find that you have not properly judged your ability to make it to the top, you should turn the ATV around while you still have forward motion (provided you have the room to do so) and go down the hill. When crossing the side of a hill: Always follow proper procedures as described in the Owner’s Manual. Avoid hills with excessively slippery or loose surfaces. Shift your weight to the uphill side of the ATV.
U5TG10.book Page 28 Monday, April 7, 2003 8:50 PM If your ATV has stalled or stopped and you believe you can continue up the hill, restart carefully to make sure you do not lift the front wheels which could cause you to lose control. If you are unable to continue up the hill, dismount the ATV on the uphill side. Physically turn the ATV around and then descend the hill. WARNING POTENTIAL HAZARD Stalling, rolling backwards or improperly dismounting while climbing a hill.
U5TG10.book Page 29 Monday, April 7, 2003 8:50 PM Dismount on uphill side or to a side if pointed straight uphill. Turn the ATV around and remount, following the procedure described in the Owner’s Manual.
U5TG10.book Page 30 Monday, April 7, 2003 8:50 PM RIDING DOWNHILL When riding your ATV downhill, shift your weight as far to the rear and uphill side of the ATV as possible. Move back on the seat and sit with your arms straight. Choose a low gear which will allow the engine compression to do most of the braking for you. Improper braking may cause a loss of traction. Use caution while descending a hill with loose or slippery surfaces. Braking ability and traction may be adversely affected by these surfaces.
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U5TG10.book Page 32 Monday, April 7, 2003 8:50 PM CROSSING A SLOPE Traversing a sloping surface on your ATV requires you to properly position your weight to maintain proper balance. Be sure that you have learned the basic riding skills on flat ground before attempting to cross a sloping surface. Avoid slopes with slippery surfaces or rough terrain that may upset your balance. WARNING POTENTIAL HAZARD Improperly crossing hills or turning on hills.
U5TG10.book Page 33 Monday, April 7, 2003 8:50 PM Avoid hills with excessively slippery or loose surfaces. Shift your weight to the uphill side of the ATV.
U5TG10.book Page 34 Monday, April 7, 2003 8:50 PM CROSSING THROUGH SHALLOW WATER The ATV can be used to cross slow moving, shallow water of up to a maximum of 35 cm (14 inches) in depth. Before entering the water, choose your path carefully. Enter where there is no sharp drop off, and avoid rocks or other obstacles which may be slippery or upset the ATV. Drive slowly and carefully. Remember that wet brakes may have reduced stopping ability. Test your brakes after leaving water.
U5TG10.book Page 35 Monday, April 7, 2003 8:50 PM Test your brakes after leaving the water. Do not continue to ride your ATV without verifying that you have regained proper braking ability. CAUTION: _ After riding your ATV in water, be sure to drain the trapped water by removing the check hose at the bottom of the air filter case. Wash the ATV in fresh water if it has been operated in salt water or muddy conditions. _ 1.
U5TG10.book Page 36 Monday, April 7, 2003 8:50 PM RIDING OVER ROUGH TERRAIN Riding over rough terrain should be done with caution. Look out for obstacles which could cause damage to the ATV or could lead to an upset or accident. Be sure to keep your feet firmly mounted on the footboards at all times. Avoid jumping the ATV as loss of control and damage to the ATV may result. WARNING POTENTIAL HAZARD Improperly operating over obstacles. WHAT CAN HAPPEN Could cause loss of control or a collision.
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U5TG10.book Page 38 Monday, April 7, 2003 8:50 PM SLIDING AND SKIDDING Care should be used when riding on loose or slippery surfaces since the ATV may slide. If unexpected and uncorrected, sliding could lead to an accident. If the rear wheels of your ATV start to slide sideways, control can usually be regained (if there is room to do so) by steering in the direction of the slide. Applying the brakes or accelerating is not recommended until you have corrected the slide.
U5TG10.book Page 39 Monday, April 7, 2003 8:50 PM With practice, over a period of time, skill at controlled sliding can be developed. The terrain should be chosen carefully before attempting such maneuvers, since both stability and control are reduced. Bear in mind that sliding maneuvers should always be avoided on extremely slippery surfaces such as ice, since all control may be lost. WARNING POTENTIAL HAZARD Skidding or sliding improperly. WHAT CAN HAPPEN You may lose control of this ATV.
U5TG10.book Page 40 Monday, April 7, 2003 8:50 PM WHAT TO DO IF ... This section is designed to be a reference guide only. Be sure to read each section on riding techniques completely. ● WHAT TO DO ... ● If your ATV doesn’t turn when you want it to: Bring the ATV to a stop and practice the turning maneuvers again. Be sure you are putting your weight on the footboard to the outside of the turn. Position your weight over the front wheels for better control. (See pages 7-23–7-24.
U5TG10.book Page 41 Monday, April 7, 2003 8:50 PM ● ● If your ATV is traversing a sloping surface: Be sure to ride with your weight positioned towards the uphill side of the ATV to maintain proper balance. If the ATV starts to tip, steer down the hill (if there are no obstacles in your way) to regain balance. If you discover that the ATV is going to tip over, dismount on the uphill side. (See pages 7-32– 7-33.
U5TG10.book Page 1 Monday, April 7, 2003 8:50 PM EBU00515 PERIODIC MAINTENANCE AND ADJUSTMENT Have a Yamaha dealer perform service if you are not familiar with machine service. 1- Periodic inspection, adjustment and lubrication will keep your machine in the safest and most efficient condition possible. Safety is an obligation of the machine owner. The most important points of machine inspection, adjustment and lubrication are explained on the following pages.
U5TG10.book Page 2 Monday, April 7, 2003 8:50 PM The service information included in this manual is intended to provide you, the owner, with the necessary information for completing your own preventive maintenance and minor repairs. The tools provided in the owner’s tool kit are sufficient for this purpose, except that a torque wrench is also necessary to properly tighten nuts and bolts. WARNING POTENTIAL HAZARD Operating this ATV with improper modifications.
U5TG10.book Page 3 Monday, April 7, 2003 8:50 PM EBU00261 PERIODIC MAINTENANCE/LUBRICATION ITEM Valves* Cooling system Spark plug Air filter element Carburetor* Crankcase breather system* Exhaust system* Spark arrester Fuel line* Engine oil Engine oil filter element Drive chain • • • • • • • • • • • • • • • • • • • • • • • • Front brake* Rear brake* Clutch* INITIAL EVERY 1 3 6 6 1 month months months months year ROUTINE • • • • • Check valve clearance. Adjust if necessary. Check for coolant leakage.
U5TG10.book Page 4 Monday, April 7, 2003 8:50 PM ITEM Wheels* Wheel bearings* Steering system* Front and rear suspension* Upper and lower arm pivot and steering shaft* Rear arm pivot* Fittings and fasteners* Lights and switches* * INITIAL EVERY 1 3 6 6 1 month months months months year ROUTINE • • • • • • • • • • Check balance/damage/runout. Replace if necessary. Check bearing assemblies for looseness/damage. Replace if damaged. Check operation. Repair if damaged. Check toe-in. Adjust if necessary.
U5TG10.book Page 5 Monday, April 7, 2003 8:50 PM EBU00807 EBU13920 Panel removal and installation Panel A To remove 1. Remove the seat. (See page 4-13 for seat removal and installation procedures.) 2. Remove the quick fastener and the bolts, and then remove the panel by pulling it out from the front of the ATV. 1. Panel A The panel illustrated needs to be removed to perform some of the maintenance described in this chapter. Refer to this section each time the panel has to be removed or installed. 1.
U5TG10.book Page 6 Monday, April 7, 2003 8:50 PM To install 1. Place the panel in the original position, and then install the quick fastener and the bolts. NOTE: To install the quick fastener, push the center pin out so that it protrudes from the fastener head, insert the fastener into the panel, and then push the protruding pin in until it is flush with the fastener head. _ 1. Bolt (× 2) _ 1. Projection (× 5) 2. Install the seat. 8-6 2.
U5TG10.book Page 7 Monday, April 7, 2003 8:50 PM EBU13931 Engine oil and oil filter element The engine oil level should be checked before each ride. In addition, the oil must be changed and the oil filter element replaced at the intervals specified in the periodic maintenance and lubrication chart. 3. Remove the engine oil tank filler cap, wipe the dipstick clean with a clean rag, insert it back into the filler hole (without screwing it in), and then remove it again to check the oil level.
U5TG10.book Page 8 Monday, April 7, 2003 8:50 PM To change the engine oil (with or without oil filter element replacement) 1. Remove the engine guard by removing the bolts. 4. If the engine oil is below the minimum level mark, add sufficient oil of the recommended type through the engine oil tank filler hole to raise it to the correct level. NOTE: When adding oil, be careful not to overfill the engine oil tank; the oil level rises faster starting from the half-level-portion on the dipstick. _ _ 5.
U5TG10.book Page 9 Monday, April 7, 2003 8:50 PM 4. Remove the engine oil filler cap and the crankcase engine oil drain bolt. 1. Engine oil tank drain bolt 6. Check the washers for damage, and replace if necessary. 1. Crankcase engine oil drain bolt 5. Remove the engine oil tank filler cap and the engine oil tank drain bolt.
U5TG10.book Page 10 Monday, April 7, 2003 8:50 PM 8. Check the O-ring for damage, and replace it if necessary. NOTE: Skip steps 7–10 if the oil filter element is not being replaced. _ _ 7. Remove the oil filter element cover by removing the bolts, and then remove the oil filter element. 1. Oil filter element 2. O-ring 9. Install a new oil filter element and the O-ring. NOTE: Make sure that the O-ring is properly seated. _ 1. Oil filter element cover 2. Bolt (× 3) _ 10.
U5TG10.book Page 11 Monday, April 7, 2003 8:50 PM Tightening torque: Oil filter element cover bolt: 10 Nm (1.0 m·kgf, 7.2 ft·lbf) Recommended engine oil: See page 10-2. Oil quantity: Without oil filter element replacement: Quantity in oil tank: 1.55 L (1.36 Imp qt, 1.64 US qt) Quantity in crankcase: 0.20 L (0.18 Imp qt, 0.21 US qt) Total amount: 1.75 L (1.54 Imp qt, 1.85 US qt) With oil filter element replacement: Quantity in oil tank: 1.55 L (1.36 Imp qt, 1.64 US qt) Quantity in crankcase: 0.30 L (0.
U5TG10.book Page 12 Monday, April 7, 2003 8:50 PM CAUTION: Tightening torque: Engine guard bolt: 7 Nm (0.7 m·kgf, 5.1 ft·lbf) _ ● ● In order to prevent clutch slippage (since the engine oil also lubricates the clutch), do not mix any chemical additives. Do not use oils with a diesel specification of “CD” or oils of a higher quality than specified. In addition, do not use oils labeled “ENERGY CONSERVING II” or higher. Make sure that no foreign material enters the crankcase.
U5TG10.book Page 13 Monday, April 7, 2003 8:50 PM EBU10151 Cooling system 1. Check the coolant level in the coolant reservoir when the engine is cold as the coolant level will vary with engine temperature. 2. If the coolant is at or below the minimum level mark, remove the coolant reservoir cap, and then add coolant or distilled water to raise it to the specified level. Coolant reservoir capacity (up to the maximum level mark): 0.29 L (0.26 Imp qt, 0.
U5TG10.book Page 14 Monday, April 7, 2003 8:50 PM EBU13940 Changing the coolant 1. Place the ATV on a level surface. 2. Remove panel A. (See page 8-5 for panel removal and installation procedures.) 3. Place a container under the engine, and then remove the coolant drain bolt. (Use a trough or a similar object as shown.) WARNING POTENTIAL HAZARD Removing the radiator cap when the engine and radiator are still hot. WHAT CAN HAPPEN You could be burned by hot fluid and steam blown out under pressure.
U5TG10.book Page 15 Monday, April 7, 2003 8:50 PM 4. Remove the radiator cap. 5. Remove the coolant reservoir by removing the bolts. 6. Remove the coolant reservoir cap, and then turn the coolant reservoir upside down to empty it. 1. Radiator cap 1. Coolant reservoir cap 3. Bolt (× 2) 2. Coolant reservoir 7. After draining the coolant, thoroughly flush the cooling system with clean tap water. 8. Install the coolant reservoir by installing the bolts.
U5TG10.book Page 16 Monday, April 7, 2003 8:50 PM 9. Replace the coolant drain bolt washer if it is damaged, install the coolant drain bolt, and then tighten it to the specified torque. Recommended antifreeze: High quality ethylene glycol antifreeze containing corrosion inhibitors for aluminum engines. Antifreeze and water mixing ratio: 1:1 Total amount: 1.3 L (1.14 Imp qt, 1.37 US qt) Coolant reservoir capacity (up to the maximum level mark): 0.29 L (0.26 Imp qt, 0.
U5TG10.book Page 17 Monday, April 7, 2003 8:50 PM EBU13950 Spark plug inspection Removal 1. Remove the seat. (See page 4-13 for seat removal and installation procedures.) 2. Remove the bolts and the quick fasteners. 3. Remove the fuel tank cap by turning it counterclockwise. 13. Start the engine and let it idle for several minutes. Stop the engine, and then check the coolant level in the radiator. If it is low, add more coolant until it reaches the top of the radiator. 14.
U5TG10.book Page 18 Monday, April 7, 2003 8:50 PM WARNING Before lifting the fuel tank, make sure that the fuel cock is in the “OFF” position and the fuel tank cap is securely tightened. Otherwise, fuel may leak out of the carburetor or fuel tank. POTENTIAL HAZARD Improper handling of gasoline. WHAT CAN HAPPEN Gasoline can catch fire and you could be burned. HOW TO AVOID THE HAZARD Always turn off the engine when removing the fuel tank cap.
U5TG10.book Page 19 Monday, April 7, 2003 8:50 PM 4. Pull the panel backward, and then remove the panel. 5. Install the fuel tank cap by turning it clockwise. 6. Remove the bolt, lift the rear of the fuel tank, and then tilt it back. 7. Remove the spark plug cap. 1. Spark plug cap 1.
U5TG10.book Page 20 Monday, April 7, 2003 8:50 PM Inspection The spark plug is an important engine component and is easy to inspect. The condition of the spark plug can indicate the condition of the engine. The ideal color on the white insulator around the center electrode is a medium-to-light tan color for an ATV that is being ridden normally. Do not attempt to diagnose such problems yourself. Instead, take the ATV to a Yamaha dealer.
U5TG10.book Page 21 Monday, April 7, 2003 8:50 PM Installation 1. Measure the electrode gap with a wire thickness gauge and, if necessary, adjust the gap to specification. 2. Clean the surface of the spark plug gasket and its mating surface, and then wipe off any grime from the spark plug threads. 3. Install the spark plug and tighten it to the specified torque. Spark plug gap: 0.7–0.8 mm (0.028–0.031 in) Tightening torque: Spark plug: 12.5 Nm (1.25 m·kgf, 9.
U5TG10.book Page 22 Monday, April 7, 2003 8:50 PM 4. Install the spark plug cap. CAUTION: _ Do not use any tools to remove or install the spark plug cap, otherwise the ignition coil coupler may be damaged. The spark plug cap may be difficult to remove because the rubber seal on the end of the cap fits tightly. To remove the spark plug cap, simply twist it back and forth while pulling it out; to install it, twist it back and forth while pushing it in. 1. Projection (× 4) 2. Slot (× 4) 8.
U5TG10.book Page 23 Monday, April 7, 2003 8:50 PM EBU13960 Air filter element cleaning NOTE: There is a check hose at the bottom of the air filter case. If dust or water collects in this hose, empty the hose and clean the air filter element and air filter case. _ _ 1. Air filter case cover 2. Holder (× 3) 3. Remove the air filter element by removing the wing bolt. 1. Check hose 1. Remove the seat. (See page 4-13 for seat removal and installation procedures.) 2.
U5TG10.book Page 24 Monday, April 7, 2003 8:50 PM 5. Wash the air filter element gently but thoroughly in solvent. WARNING 1. Wing bolt POTENTIAL HAZARD Using low flash point solvents or gasoline to clean the air filter element. WHAT CAN HAPPEN Low flash point solvents or gasoline can catch fire or explode. HOW TO AVOID THE HAZARD Use parts cleaning solvent to clean the air filter element. 2. Air filter element 4. Remove the air filter element from its frame. 6.
U5TG10.book Page 25 Monday, April 7, 2003 8:50 PM 8. Apply Yamaha foam air filter oil or other quality foam air filter oil to the air filter element. If foam air filter oil is not available, engine oil may be used. NOTE: The air filter element should be cleaned every 20–40 hours. It should be cleaned and lubricated more often if the machine is operated in extremely dusty areas. Each time air filter element maintenance is performed, check the air inlet to the air filter case for obstructions.
U5TG10.book Page 26 Monday, April 7, 2003 8:50 PM EBU00780 Spark arrester cleaning Be sure the exhaust pipe and muffler are cool before cleaning the spark arrester. 1. Remove the bolt. 2. Remove the tailpipe by pulling it out of the muffler. 3. Tap the tailpipe lightly, then use a wire brush to remove any carbon deposits from the spark arrester portion of the tailpipe. 1. Bolt 1. Tailpipe 2. Spark arrester 4. Insert the tailpipe into the muffler and align the bolt holes. 5.
U5TG10.book Page 27 Monday, April 7, 2003 8:50 PM EBU00296 Carburetor adjustment The carburetor is a vital part of the engine and requires very sophisticated adjustment. Most adjusting should be left to a Yamaha dealer who has the professional knowledge and experience to do so. However, the idling speed may be performed by the owner as a part of the usual maintenance routine. WARNING POTENTIAL HAZARD Improper cleaning of the spark arrester. Hot exhaust system WHAT CAN HAPPEN Could injure the eyes.
U5TG10.book Page 28 Monday, April 7, 2003 8:50 PM EBU13970 EBU00303 Idle speed adjustment A special tester is needed to check the engine r/min on this model. Therefore, take the ATV to a Yamaha dealer to have the idle speed adjusted. Valve clearance adjustment The correct valve clearance changes with use, resulting in improper fuel/air supply or engine noise. To prevent this, the valve clearance must be adjusted regularly.
U5TG10.book Page 29 Monday, April 7, 2003 8:50 PM EBU00307 EBU13981 Throttle lever adjustment Front brake pad inspection Each brake pad is provided with a wear indicator groove. The indicator grooves allow checking of brake pad wear without disassembling the brake. Apply the brake and inspect the wear indicator grooves. If a brake pad is worn to the point that the wear indicator groove is almost in contact with the disc plate, ask a Yamaha dealer to replace the brake pads as a set.
U5TG10.book Page 30 Monday, April 7, 2003 8:50 PM EBU13990 Rear brake pad inspection Each brake pad is provided with a wear indicator groove. The indicator grooves allow checking of brake pad wear without disassembling the brake. Apply the brake and inspect the wear indicator grooves. If a brake pad is worn to the point that the wear indicator groove is almost in contact with the disc plate, ask a Yamaha dealer to replace the brake pads as a set.
U5TG10.book Page 31 Monday, April 7, 2003 8:50 PM EBU01214 Brake fluid level inspection Insufficient brake fluid may let air enter the brake system, possibly causing the brakes to become ineffective. Before riding, check that the brake fluid is above the minimum level mark and replenish if necessary. A low brake fluid level may indicate worn brake pads and/or brake system leakage. If the brake fluid level is low, be sure to check the brake pads for wear and the brake system for leakage. Rear 1.
U5TG10.book Page 32 Monday, April 7, 2003 8:50 PM ● ● ● 1. Brake fluid reservoir cover 2. Bolt (× 2) Observe these precautions: ● When checking the brake fluid level, make sure the top of the brake fluid reservoir is level. ● Use only the designated quality brake fluid, otherwise, the rubber seals may deteriorate, causing leakage and poor brake performance. ● Refill with the same type of brake fluid. Mixing fluids may result in a harmful chemical reaction and lead to poor brake performance.
U5TG10.book Page 33 Monday, April 7, 2003 8:50 PM EBU01187 Front brake lever free play The front brake lever should have a free play of zero mm (zero in) at the lever end. If not, have a Yamaha dealer check the brake system. WARNING POTENTIAL HAZARD Operating with improperly serviced or adjusted brakes. WHAT CAN HAPPEN You could lose braking ability, which could lead to an accident. HOW TO AVOID THE HAZARD After servicing: ● Make sure the brakes operate smoothly and that the free play is correct.
U5TG10.book Page 34 Monday, April 7, 2003 8:50 PM EBU01191 Brake pedal height adjustment The top of the brake pedal should be positioned 11.7 mm (0.46 in) below the top of the footrest. If not, have a Yamaha dealer adjust it. WARNING POTENTIAL HAZARD Operating with improperly serviced or adjusted brakes. WHAT CAN HAPPEN You could lose braking ability, which could lead to an accident.
U5TG10.book Page 35 Monday, April 7, 2003 8:50 PM EBU14000 Parking brake adjustment Parking brake adjustment may be required if the parking brake does not hold properly. The cable length A should be adjusted to 56– 60 mm (2.20–2.36 in). 3. Turn the adjusting nut on the brake cable in direction a to increase the cable length or in direction b to decrease the cable length. 1. Locknut 1. Locknut A. Cable length 2. Adjusting bolt 2.
U5TG10.book Page 36 Monday, April 7, 2003 8:50 PM 5. Screw in the adjusting bolt at the rear brake caliper by hand until it feels tight, then screw it out 1/8 turn. Tighten the locknut to the specified torque. WARNING POTENTIAL HAZARD Operating with improperly adjusted brakes. WHAT CAN HAPPEN The brakes could malfunction, causing reduced braking performance. This could increase the chance of a collision or accident.
U5TG10.book Page 37 Monday, April 7, 2003 8:50 PM EBU00833 EBU14210 Adjusting the rear brake light switch The rear brake light switch, which is activated by the brake pedal and brake lever, is properly adjusted when the brake light comes on just before braking takes effect. If necessary, adjust the brake light switch as follows. Turn the adjusting nut while holding the rear brake light switch in place. To make the brake light come on earlier, turn the adjusting nut in direction a.
U5TG10.book Page 38 Monday, April 7, 2003 8:50 PM If the specified free play cannot be obtained, proceed with the following steps. 2. Turn the adjusting nut at the clutch lever in direction a to loosen the cable. 3. Loosen the locknut at the crankcase side. 4. Turn the adjusting nut at the crankcase in direction a to increase the free play or in direction b to decrease the free play. 5. Tighten the locknut at the crankcase side. 1. Locknut 2.
U5TG10.book Page 39 Monday, April 7, 2003 8:50 PM EBU01144 Drive chain slack check NOTE: Move the ATV back and forth and find the tightest position of the drive chain. Check and/ or adjust the chain slack while it is in this tightest position. _ _ To check the drive chain slack, all tires must be touching the ground and there should be no weight on it. Check the drive chain slack at the position shown in the illustration Normal slack is approximately 25–35 mm (0.98– 1.38 in).
U5TG10.book Page 40 Monday, April 7, 2003 8:50 PM EBU01194 NOTE: There are alignment marks on each side of the swingarm and on the hub. Use them to check for proper wheel axle alignment. Drive chain slack adjustment 1. Loosen the rear wheel hub upper and lower nuts. _ _ 1. Upper wheel hub nut 2. Lower wheel hub nut 2. Loosen the locknuts on each side of the swingarm. To tighten the drive chain, turn the adjusting bolts in direction a.
U5TG10.book Page 41 Monday, April 7, 2003 8:50 PM EBU00805 Lubricating the drive chain The drive chain must be cleaned and lubricated at the intervals specified in the periodic maintenance and lubrication chart, otherwise it will quickly wear out, especially when riding in dusty or wet areas. Service the drive chain as follows. Tightening torques: Locknut: 16 Nm (1.6 m·kgf, 12 ft·lbf) Upper wheel hub nut: 85 Nm (8.5 m·kgf, 61 ft·lbf) Lower wheel hub nut: 85 Nm (8.5 m·kgf, 61 ft·lbf) 1.
U5TG10.book Page 42 Monday, April 7, 2003 8:50 PM 1. Clean the drive chain with kerosene and a small soft brush. CAUTION: To prevent damaging the O-rings, do not clean the drive chain with steam cleaners, high-pressure washers or inappropriate solvents. 2. Wipe the drive chain dry. 3. Thoroughly lubricate the drive chain with a special O-ring chain lubricant. CAUTION: Do not use engine oil or any other lubricants for the drive chain, as they may contain substances that could damage the O-rings.
U5TG10.book Page 43 Monday, April 7, 2003 8:50 PM EBU00356 Cable inspection and lubrication Lubricate the inner cables and the cable ends. If the cables do not operate smoothly, ask a Yamaha dealer to replace them. WARNING POTENTIAL HAZARD Damaged control cables. WHAT CAN HAPPEN Corrosion can result when the outer covering of control cables becomes damaged. Cables can also become frayed or kinked. Operation of controls could be restricted, which could cause an accident or injury.
U5TG10.book Page 44 Monday, April 7, 2003 8:50 PM EBU14020 Brake pedal, brake lever and clutch lever lubrication Lubricate the pivoting parts.
U5TG10.book Page 45 Monday, April 7, 2003 8:50 PM EBU01018 Front upper and lower arm pivot lubrication Lubricate the upper and lower arm pivots. Right side Recommended lubricant: Lithium-soap-based grease Left side 1. Upper grease nipple 1. Upper grease nipple 2. Lower grease nipple (× 2) 8-45 2.
U5TG10.book Page 46 Monday, April 7, 2003 8:50 PM EBU10190 Rear arm pivot lubrication Lubricate the rear arm pivot.
U5TG10.book Page 47 Monday, April 7, 2003 8:50 PM EBU01112 Wheel removal 1. Loosen the wheel nuts. 2. Elevate the ATV and place a suitable stand under the frame. 3. Remove the nuts from the wheel. 4. Remove the wheel. Rear Front 1. Nut (× 4) 1.
U5TG10.book Page 48 Monday, April 7, 2003 8:50 PM EBU14031 Wheel installation When installing the wheel, reverse the removal procedure. Tighten the wheel nuts to the specified torque. Wheel nut torque: Front: 45 Nm (4.5 m·kgf, 33 ft·lbf) Rear: 45 Nm (4.5 m·kgf, 33 ft·lbf) NOTE: The arrow mark on each front tire must point toward the rotating direction of the wheel. _ _ Front 1.
U5TG10.book Page 49 Monday, April 7, 2003 8:50 PM EBU00380 Battery This machine is equipped with a sealed-type battery. Therefore it is not necessary to check the electrolyte or add distilled water in the battery. If the battery seems to have discharged, consult a Yamaha dealer. HOW TO AVOID THE HAZARD Avoid contact with skin, eyes or clothing. Always shield eyes when working near batteries. Keep out of reach of children. Antidote: EXTERNAL: Flush with water.
U5TG10.book Page 50 Monday, April 7, 2003 8:50 PM EBU00385 Battery maintenance 1. When the machine is not used for a month or longer, remove the battery and store it in a cool, dark place. Completely recharge the battery before reinstallation. CAUTION: A special battery charger (constant voltage/ampere or constant voltage) is required for recharging a sealed-type battery. Using a conventional battery charger may shorten the battery life. 2.
U5TG10.book Page 51 Monday, April 7, 2003 8:50 PM EBU00390 Fuse replacement 1. The fuse case is located under the seat. 2. If the fuse is blown, turn off the main switch and install a new fuse of the specified amperage. Then turn on the switches. If the fuse immediately blows again, consult a Yamaha dealer. WARNING POTENTIAL HAZARD Using an improper fuse. WHAT CAN HAPPEN An improper fuse can cause damage to the electrical system which could lead to a fire.
U5TG10.book Page 52 Monday, April 7, 2003 8:50 PM EBU14040 Replacing a headlight bulb If a headlight bulb burns out, replace it as follows. 1. Remove the headlight assembly by removing the bolts. 3. Remove the headlight bulb holder cover. 1. Headlight bulb holder cover 2. Headlight coupler 1. Headlight assembly 2. Bolt (× 2) 2. Disconnect the headlight coupler.
U5TG10.book Page 53 Monday, April 7, 2003 8:50 PM 4. Push the headlight bulb holder in and turn it counterclockwise to remove. WARNING POTENTIAL HAZARD A headlight bulb is hot when it is on and immediately after it is turned off. WHAT CAN HAPPEN You can be burned, or a fire could start if the bulb touches something flammable. HOW TO AVOID THE HAZARD Wait for the bulb to cool before touching or removing it. 1. Headlight bulb holder 5. Remove the defective bulb and replace it with a new bulb.
U5TG10.book Page 54 Monday, April 7, 2003 8:50 PM 6. Push the headlight bulb holder in and turn it clockwise to install. 7. Install the headlight bulb holder cover. 8. Connect the headlight coupler. 9. Install the headlight assembly by installing the bolts. 10. Adjust the headlight beam if necessary. 1. Do not touch the glass part of the bulb.
U5TG10.book Page 55 Monday, April 7, 2003 8:50 PM EBU14050 EBU01217 Headlight beam adjustment Tail/brake light bulb replacement 1. Remove the lens by removing the screws. CAUTION: _ It is advisable to have a Yamaha dealer make this adjustment. _ To raise the beam, turn the adjusting bolt in direction a. To lower the beam, turn the adjusting bolt in direction b. 1. Lens 2. Screw (× 2) 2. Remove the defective bulb by pushing it inward and turning it counterclockwise. 1.
U5TG10.book Page 56 Monday, April 7, 2003 8:50 PM 1. Bulb 3. Install a new bulb by pushing it inward and turning it clockwise. 4. Install the lens by installing the screws. CAUTION: _ Do not overtighten the screws as the lens may break.
U5TG10.book Page 57 Monday, April 7, 2003 8:50 PM EBU00412 Troubleshooting Although Yamaha machines receive a rigid inspection before shipment from the factory, trouble may occur during operation. Any problem in the fuel, compression, or ignition systems can cause poor starting and loss of power. The troubleshooting chart describes a quick, easy procedure for making checks. If your machine requires any repair, take it to a Yamaha dealer.
U5TG10.book Page 58 Monday, April 7, 2003 8:50 PM EBU00806* Troubleshooting charts Starting problems or poor engine performance Turn the fuel cock lever to “ON”. There is fuel. Turn the fuel cock lever to “OFF”. Remove the fuel hose from the fuel cock. Some fuel. Turn the fuel cock lever to “RES”. Restart the engine. No fuel. Supply fuel. 1. Fuel Check if there is fuel in the fuel tank. 2. Compression Use the electric starter to see if there is compression. 3. Ignition There is compression.
U5TG10.book Page 59 Monday, April 7, 2003 8:50 PM Engine overheating WARNING HOW TO AVOID THE HAZARD Wait for the engine to cool before removing the radiator cap. Always use a thick rag over the cap. Allow any remaining pressure to escape before completely removing the cap. POTENTIAL HAZARD Removing the radiator cap when the engine and radiator are still hot. WHAT CAN HAPPEN You could be burned by hot fluid and steam blown out under pressure. Leakage.
U5TG10.book Page 1 Monday, April 7, 2003 8:50 PM EBU00417 CLEANING AND STORAGE CAUTION: 1- Excessive water pressure may cause water seepage and deterioration of wheel bearings, brakes, transmission seals and electrical devices. Many expensive repair bills have resulted from improper high pressure detergent applications such as those available in coin-operated car washers. A.
U5TG10.book Page 2 Monday, April 7, 2003 8:50 PM 7. Clean the seat with a vinyl upholstery cleaner to keep the cover pliable and glossy. 8. Automotive type wax may be applied to all painted and chrome plated surfaces. Avoid combination cleaner-waxes. Many contain abrasives which may mar the paint or protective finish. When finished, start the engine and let it idle for several minutes. WARNING POTENTIAL HAZARD Operation with wet brakes after washing.
U5TG10.book Page 3 Monday, April 7, 2003 8:50 PM EBU00525 B. STORAGE Long term storage (60 days or more) of your machine will require some preventive procedures to guard against deterioration. After thoroughly cleaning the machine, prepare for storage as follows: 1. Fill the fuel tank with fresh fuel and add the specified amount of Yamaha Fuel Stabilizer and Conditioner or an equivalent product. 2.
U5TG10.book Page 4 Monday, April 7, 2003 8:50 PM 8. Remove the battery and charge it. Store it in a dry place and recharge it once a month. Do not store the battery in an excessively warm or cold place (less than 0 °C (30 °F) or more than 30 °C (90 °F)). NOTE: Make any necessary repairs before storing the machine.
U5TG10.book Page 1 Monday, April 7, 2003 8:50 PM EBU00428 SPECIFICATIONS 1- 1 MODEL YFZ450 Dimension: Overall length Overall width Overall height Seat height Wheel base Ground clearance Minimum turning radius 1,840 mm ( 72.4 in) 1,170 mm ( 46.1 in) 1,090 mm ( 42.9 in) 800 mm ( 31.5 in) 1,280 mm ( 50.4 in) 255 mm ( 10.04 in) 3,500 mm ( 137.
U5TG10.book Page 2 Monday, April 7, 2003 8:50 PM MODEL YFZ450 Engine oil: Type 0˚ 10˚ 30˚ 50˚ 70˚ 90˚ 110˚ 130˚F YAMALUBE 4 (20W40) or SAE 20W40 YAMALUBE 4 (10W30) or SAE 10W30 SAE 5W30 -20˚ Recommended engine oil classification: -10˚ 0˚ 10˚ 20˚ 30˚ 40˚ 50˚C API Service SE, SF, SG type or higher CAUTION: In order to prevent clutch slippage (since the engine oil also lubricates the clutch), do not mix any chemical additives.
U5TG10.book Page 3 Monday, April 7, 2003 8:50 PM MODEL YFZ450 Radiator capacity (including all routes): 1.3 L (1.14 lmp qt, 1.37 US qt) Air filter: Wet element Fuel: Type Tank capacity Reserve amount PREMIUM UNLEADED GASOLINE ONLY 10.0 L (2.20 Imp gal, 2.64 US gal) 1.9 L (0.42 Imp gal, 0.50 US gal) Carburetor: Type × quantity Manufacturer FCR39H × 1 KEIHIN Spark plug: Type/manufacturer Gap CR8E/NGK 0.7–0.8 mm (0.028–0.
U5TG10.book Page 4 Monday, April 7, 2003 8:50 PM MODEL YFZ450 Gear ratio: 29/12 (2.416) 27/14 (1.928) 25/16 (1.562) 23/18 (1.277) 21/20 (1.050) 1st 2nd 3rd 4th 5th Chassis: Frame type Caster angle Trail Steel tube 5° 21 mm (0.
E-10.fm Page 5 Friday, May 30, 2003 8:11 PM MODEL YFZ450 Wheel travel: Front Rear 230 mm (9.06 in) 256 mm (10.08 in) Electrical: Ignition system Generator system Battery type/voltage capacity DC-C.D.I. A.C. magneto GT7B-4/12 V, 6.5 Ah Headlight type: Krypton bulb Bulb voltage, wattage × quantity: Headlight Tail/brake light Indicator/warning lights: Neutral Coolant temperature 12 V, 30 W/30 W × 2 12 V, 5 W/21 W × 1 12 V, 1.7 W × 1 12 V, 1.
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U5TG10.book Page 1 Monday, April 7, 2003 8:50 PM EBU13651 1- MAINTENANCE RECORD Copies of work orders and/or receipts for parts you purchase and install will be required to document maintenance done in accordance with the warranty. The chart below is printed only as a reminder to you that the maintenance work is required. It is not acceptable proof of maintenance work.
U5TG10.book Page 1 Monday, April 7, 2003 8:50 PM EBU00432 YAMAHA MOTOR CORPORATION, U.S.A.
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U5TG10.book Page 1 Monday, April 7, 2003 8:50 PM EBU00435 YAMAHA EXTENDED SERVICE (Y.E.S.
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U5TG10.book Page 3 Monday, April 7, 2003 8:50 PM EBU00436 WARNING Indicates a potential hazard that could result in serious injury or death.
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EBU00438 READ THIS MANUAL CAREFULLY! It contains important safety information. WARNING Improper ATV use can result in SEVERE INJURY or DEATH. BEER BEER ALWAYS USE AN APPROVED HELMET AND PROTECTIVE GEAR NEVER USE ON PUBLIC ROADS NEVER CARRY PASSENGERS NEVER USE WITH DRUGS OR ALCOHOL NEVER operate: ALWAYS: without proper training or instruction. use proper riding techniques to avoid at speeds too fast for your skills or the vehicle overturns on hills and rough conditions. terrain and in turns.