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
U4XE16.book Page 1 Monday, March 24, 2003 3:14 PM EBU00941 INTRODUCTION 1- Congratulations on your purchase of the Yamaha YFM250X. It represents the result of many years of Yamaha experience in the production of fine sporting, touring, and pace-setting 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.
U4XE16.book Page 1 Monday, March 24, 2003 3:14 PM EBU00801 IMPORTANT MANUAL INFORMATION 1- FAILURE TO FOLLOW THE WARNINGS CONTAINED IN THIS MANUAL CAN RESULT IN SERIOUS INJURY OR DEATH.
U4XE16.book Page 2 Monday, March 24, 2003 3:14 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.
U4XE16.book Page 1 Monday, March 24, 2003 3:14 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 ..........................
U4XE16.book Page 2 Monday, March 24, 2003 3:14 PM 5 6 PRE-OPERATION CHECKS ........... 5-1 Front and rear brakes ..................... 5-3 Fuel ................................................. 5-5 Engine oil ........................................ 5-7 Final gear oil.................................... 5-7 Throttle lever ................................... 5-7 Fittings and fasteners...................... 5-8 Lights............................................... 5-8 Switches..............................
U4XE16.book Page 3 Monday, March 24, 2003 3:14 PM 8 PERIODIC MAINTENANCE AND ADJUSTMENT.................................. 8-1 Owner’s manual and tool kit............ 8-1 Periodic maintenance/ lubrication ...................................... 8-3 Engine oil......................................... 8-5 Final gear oil .................................... 8-9 Spark plug inspection.................... 8-11 Air filter element cleaning.............. 8-13 Spark arrester cleaning .................
U4XE16.book Page 4 Monday, March 24, 2003 3:14 PM 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.) ...........................................
U4XE16.
U4XE16.book Page 2 Monday, March 24, 2003 3:14 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 Overloading this ATV or carrying cargo improperly can change handling. stability and braking performance and can lead to an accident.
U4XE16.book Page 3 Monday, March 24, 2003 3:14 PM 3 5 4 WARNING Overloading this ATV or carrying cargo improperly can change handling. stability and braking performance and can lead to an accident. Never exceed the maximum rear cargo limit of : 45kg (99 lbs) NEVER sit on the carrier. Refer to instructions in the Owner's Manual.
U4XE16.
U4XE16.book Page 1 Monday, March 24, 2003 3:14 PM EBU00924 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.
U4XE16.book Page 2 Monday, March 24, 2003 3:14 PM ● ● ● ● ● ● ● ● ● ● 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, long-sleeved shirt or jacket, and long pants. Never consume alcohol or drugs before or while operating this ATV. Never operate at speeds too fast for your skills or the conditions.
U4XE16.book Page 3 Monday, March 24, 2003 3:14 PM ● ● ● ● ● Always follow proper procedures for climbing hills as described in this manual. Check the terrain carefully before you start up any hill. Never climb hills with excessively slippery or loose surfaces. Shift your weight forward. Never open the throttle suddenly or make sudden gear changes. Never go over the top of a hill at high speed. Always follow proper procedures for going down hills and for braking on hills as described in this manual.
U4XE16.book Page 4 Monday, March 24, 2003 3:14 PM ● ● ● ● ● ● ● Always be careful when skidding or sliding. Learn to safely control skidding or sliding by practicing at low speeds and on level, smooth terrain. On extremely slippery surfaces, such as ice, go slowly and be very cautious in order to reduce the chance of skidding or sliding out of control. Never operate an ATV in fast flowing water or in water deeper than that recommended in this manual.
U4XE16.book Page 5 Monday, March 24, 2003 3:14 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.
U4XE16.book Page 6 Monday, March 24, 2003 3:14 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.
U4XE16.book Page 1 Monday, March 24, 2003 3:14 PM EBU00032 DESCRIPTION AND MACHINE IDENTIFICATION 1- 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. Spark arrester Rear carrier Seat Fuel tank cap Front carrier Brake pedal Rear brake light switch Front wheel Headlight Fuel cock Starter (choke) 12. 13. 14. 15. 16. 17. 18. 19. 20. 21. 22.
U4XE16.book Page 2 Monday, March 24, 2003 3:14 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.
U4XE16.book Page 3 Monday, March 24, 2003 3:14 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.
U4XE16.book Page 1 Monday, March 24, 2003 3:14 PM EBU00039 CONTROL FUNCTIONS 1 WARNING 2 Indicates a potential hazard that could result in serious injury or death. 3 4 EBU00942 5 Main switch Functions of the respective switch positions are as follows: 6 7 8 ON: The engine can be started only at this position and the headlights and taillight come on when the light switch is on. 9 10 11 12 OFF: All electrical circuits are switched off. The key can be removed in this position.
U4XE16.book Page 2 Monday, March 24, 2003 3:14 PM EBU00043 EBU00053 Indicator lights Handlebar switches 1. Reverse indicator light “R” 2. Neutral indicator light “N” 1. Light switch “LIGHTS” 2. Engine stop switch “ENG.STOP” 3. Start switch “START” EBU00602 EBU11580 Reverse indicator light “R” This indicator light comes on when the transmission is in reverse. EBU00603 Neutral indicator light “N” This indicator light comes on when the transmission is in neutral. 4-2 Engine stop switch “ENG.
U4XE16.book Page 3 Monday, March 24, 2003 3:14 PM EBU00056 EBU11560 Start switch “START” The starter motor cranks the engine when this switch is pushed. Light switch “LIGHTS” Set the switch to the “LO” position to turn on the low beam and the taillight. Set the switch to the “HI” position to turn on the high beam and the taillight. Set the switch to the “OFF” position to turn off all of the lights. CAUTION: _ See starting instructions prior to starting engine (see page 6-1 for details).
U4XE16.book Page 4 Monday, March 24, 2003 3:14 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.
U4XE16.book Page 5 Monday, March 24, 2003 3:14 PM EBU11590 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.
U4XE16.book Page 6 Monday, March 24, 2003 3:14 PM EBU00070 EBU00073 Front brake lever The front brake lever is located on the right handlebar. Pull it toward the handlebar to apply the front brake. Rear brake pedal and lever The brake pedal is located on the right side of the machine and the brake lever is located on the left handlebar. Push down on the pedal or pull the lever toward the handlebar to apply the rear brake. 1. Front brake lever 1.
U4XE16.book Page 7 Monday, March 24, 2003 3:14 PM 1.
U4XE16.book Page 8 Monday, March 24, 2003 3:14 PM EBU00074 Parking brake Use the parking brake when you have to start the engine or park the machine, especially on a slope. Apply the rear brake lever and push down the lock plate to apply the parking brake. Squeeze the rear brake lever to release the parking brake. 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.
U4XE16.book Page 9 Monday, March 24, 2003 3:14 PM EBU00083 EBU00085 Shift pedal This machine is equipped with a constantmesh 5-speed transmission. The shift pedal is located on the left side of the engine. Neutral is at the bottom position. Drive select lever The drive select lever is used for driving the machine either forward or in reverse. Refer to page 6-4 for drive select lever operation. 1. Drive select lever 1. Shift pedal N.
U4XE16.book Page 10 Monday, March 24, 2003 3:14 PM EBU00590 Recoil starter Firmly grasp the handle and pull slightly until engagement can be felt. Then pull forcefully, being careful not to pull the rope all the way out. WARNING POTENTIAL HAZARD Starting the engine in gear and/or starting the engine without setting the parking brake. WHAT CAN HAPPEN The ATV could start to move unexpectedly, which could cause an accident.
U4XE16.book Page 11 Monday, March 24, 2003 3:14 PM EBU00092 Fuel tank cap Remove the fuel tank cap by turning it counterclockwise. 1.
U4XE16.book Page 12 Monday, March 24, 2003 3:14 PM EBU00093 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. RES: This indicates reserve.
U4XE16.book Page 13 Monday, March 24, 2003 3:14 PM EBU00094 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. Fully-open 3. Closed 2. Half open A.
U4XE16.book Page 14 Monday, March 24, 2003 3:14 PM EBU00567 Seat To remove the seat, pull the seat lock lever upward and pull up the seat at the rear. 1.
U4XE16.book Page 15 Monday, March 24, 2003 3:14 PM EBU00581 Storage box 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. Maximum load limit: 2.0 kg (4.4 lb) NOTE: Make sure that the seat is securely fitted. CAUTION: To protect from damage, do not put metal products, like tools or sharply edged products directly in the storage box. If they must be stored, wrap them in appropriate cushion material. _ 1.
U4XE16.book Page 16 Monday, March 24, 2003 3:14 PM EBU00582 Front carrier Maximum load limit: 30 kg (66 lb) EBU00583 Rear carrier Maximum load limit: 45 kg (99 lb) 1. Spring preload adjusting ring EBU01103 2. Position indicator NOTE: A special wrench can be obtained at a Yamaha dealer to make this adjustment. Rear shock absorber adjustment The spring preload can be adjusted to suit the rider’s weight and riding conditions.
U4XE16.book Page 17 Monday, March 24, 2003 3:14 PM 1. Special wrench Standard position: B A - Minimum (soft) E - Maximum (hard) EBU00112 WARNING Indicates a potential hazard that could result in serious injury or death.
U4XE16.book Page 1 Monday, March 24, 2003 3:14 PM PRE-OPERATION CHECKS 1- Before using this machine, check the following points: ITEM ROUTINE PAGE Front brake • Check operation, free play, fluid level and fluid leakage. • Fill with DOT 4 brake fluid if necessary. 5-3, 8-20–8-23 Rear brake • Check operation, condition and free play. • Adjust if necessary. 5-3, 8-20–8-26 Fuel • Check fuel level. • Fill with fuel if necessary. Engine oil • Check oil level. • Fill with oil if necessary.
U4XE16.book Page 2 Monday, March 24, 2003 3:14 PM WARNING 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.
U4XE16.book Page 3 Monday, March 24, 2003 3:14 PM EBU12520 Brake fluid leakage (front brake) Check to see if any brake fluid is leaking out of the hose, joint or brake fluid reservoir of the front brake. Apply the brake firmly for one minute. If the lever moves slowly inward, there may be a leak in the brake system. If there is any leakage, the brake system should be inspected by a Yamaha dealer. Front and rear brakes Brake levers and brake pedal Check for correct free play in the front brake lever.
U4XE16.book Page 4 Monday, March 24, 2003 3:14 PM 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. If a problem cannot be corrected by the adjustment procedures provided in this manual, have a Yamaha dealer check for the cause.
U4XE16.book Page 5 Monday, March 24, 2003 3:14 PM EBU01085 Fuel Make sure there is sufficient gasoline in the tank. Your Yamaha engine has been designed to use regular unleaded gasoline with a pump octane number ([R+M]/2) of 86 or higher, or research octane number of 91 or higher. If knocking or pinging occurs, use a different brand of gasoline or premium unleaded fuel. Unleaded fuel will give you longer spark plug life and reduced maintenance cost.
U4XE16.book Page 6 Monday, March 24, 2003 3:14 PM Gasohol There are two types of gasohol; gasohol containing ethanol and that containing methanol. Gasohol containing ethanol can be used if ethanol content does not exceed 10%. Gasohol containing methanol is not recommended by Yamaha because it may cause fuel system damage or vehicle performance problems. 1. Fuel tank filler tube WARNING POTENTIAL HAZARD Improper care when refueling. WHAT CAN HAPPEN Fuel can spill, which can cause a fire and severe injury.
U4XE16.book Page 7 Monday, March 24, 2003 3:14 PM EBU10842 EBU00493 Engine oil Make sure the engine oil is at the specified level. Add oil as necessary. (See page 8-5.) Final gear oil Make sure the final gear oil is at the specified level. Add oil as necessary. (See pages 8-9– 8-11 for details.) CAUTION: _ ● ● Recommended oil: SAE 80 API GL-4 Hypoid gear oil In order to prevent clutch slippage (since the engine oil also lubricates the clutch), do not mix any chemical additives.
U4XE16.book Page 8 Monday, March 24, 2003 3:14 PM EBU11620 Fittings and fasteners Always check the tightness of chassis fittings and fasteners before a ride. Take the machine to a Yamaha dealer or refer to the Service Manual for correct tightening torque. EBU10030 Lights Check the headlights and tail/brake light to make sure they are in working condition. Repair as necessary for proper operation. EBU11700 Switches Check the operation of all switches.
U4XE16.book Page 9 Monday, March 24, 2003 3:14 PM EBU00157 Tires 2. The tires should be set to the recommended pressure: ● Recommended tire pressure Front 20 kPa (0.20 kgf/cm2, 2.9 psi) Rear 25 kPa (0.25 kgf/cm2, 3.6 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 17 kPa (0.17 kgf/cm2, 2.
U4XE16.book Page 10 Monday, March 24, 2003 3:14 PM 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.
U4XE16.book Page 11 Monday, March 24, 2003 3:14 PM EBU00159 How to measure tire pressure Use the low-pressure tire gauge. NOTE: The low-pressure tire gauge is included as standard equipment. Make two measurements of the tire pressure and use the second reading. Dust or dirt in the gauge could cause the first reading to be incorrect. 1. Low-pressure tire gauge Set pressure with tires cold.
U4XE16.book Page 12 Monday, March 24, 2003 3:14 PM EBU00160 Tire wear limit When the tire groove decreases to 3 mm (0.12 in) due to wear, replace the tire. a.
U4XE16.book Page 1 Monday, March 24, 2003 3:14 PM EBU00161 EBU00500 OPERATION Starting a cold engine WARNING WARNING POTENTIAL HAZARD Freezing control cables in cold weather. WHAT CAN HAPPEN You could be unable to control the ATV, which could lead to an accident or collision. HOW TO AVOID THE HAZARD When riding in cold weather, always make sure all control cables work smoothly before you begin riding. Indicates a potential hazard that could result in serious injury or death.
U4XE16.book Page 2 Monday, March 24, 2003 3:14 PM Position 3: Cold engine start-ambient temperature above 25°C (80°F) and warm engine start position. NOTE: ● When the transmission is in neutral, the neutral indicator light should come on. If the light does not come on, ask a Yamaha dealer to inspect it. ● The engine can be started in any gear if the rear brake lever is applied. However, it is recommended to shift into neutral before starting the engine. _ 1 2 3 4 5 6 _ 7 5.
U4XE16.book Page 3 Monday, March 24, 2003 3:14 PM NOTE: ● If the engine fails to start, release the start switch, then push the start switch 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. ● If the battery is discharged, pull the recoil starter to start the engine. CAUTION: _ _ See the “Engine break-in” section prior to operating engine for the first time.
U4XE16.book Page 4 Monday, March 24, 2003 3:14 PM EBU00185 Drive select lever operation and reverse driving CAUTION: Before shifting, stop the machine and return the throttle lever to its closed position. Otherwise the transmission may be damaged. NOTE: When shifting into reverse, the transmission must be in first gear. 1. Drive select lever a. Forward 2. Lock release button b. Reverse NOTE: When in reverse, the reverse indicator light should be on.
U4XE16.book Page 5 Monday, March 24, 2003 3:14 PM EBU02000 Shifting This model has a 5-speed forward transmission with centrifugal automatic clutch. The transmission allows you to control the amount of power you have available at a given speed or for starting accelerating, climbing, etc. To shift into neutral, return the throttle lever to its original position and repeatedly depress the shift pedal until it stops. WARNING POTENTIAL HAZARD Improperly operating in reverse.
U4XE16.book Page 6 Monday, March 24, 2003 3:14 PM 4. Once the machine has attained adequate speed, release the throttle lever. 5. Shift into second gear and release the shift pedal. 6. Open the throttle gradually. 7. Follow the same procedure when shifting to the next higher gear. CAUTION: _ Do not coast for long periods with the engine off, and do not tow the machine a long distance. Even with gears in neutral, the transmission is only properly lubricated when the engine is running.
U4XE16.book Page 7 Monday, March 24, 2003 3:14 PM EBU00207 EBU00209 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.
U4XE16.book Page 8 Monday, March 24, 2003 3:14 PM EBU00211 Parking When parking, stop the engine and shift into neutral. Turn the fuel cock to “OFF” and apply the parking brake. If any abnormality is noticed during this period, consult a Yamaha dealer. 1. 0–10 hours: Avoid continuous operation above half throttle. Allow a cooling off period of five to ten minutes after every hour of operation. Vary the speed of the machine from time to time. Do not operate it at one set throttle position. 2.
U4XE16.book Page 9 Monday, March 24, 2003 3:14 PM EBU12960 Parking on a slope 1. Bring the ATV to a stop by applying the brakes in low gear. 2. Stop the engine. 3. With the rear brake lever and pedal applied, apply the parking brake and slowly release the 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. HOW TO AVOID THE HAZARD Avoid parking on hills or other inclines.
U4XE16.book Page 10 Monday, March 24, 2003 3:14 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.
U4XE16.book Page 11 Monday, March 24, 2003 3:14 PM EBU00588 Loading Cargo or a trailer can change the stability and handling of an ATV. You must use common sense and good judgment when carrying cargo or towing a trailer. Keep the following points in mind: ● Never exceed the weight limits shown. An overloaded ATV can be unstable.
U4XE16.book Page 12 Monday, March 24, 2003 3:14 PM ● ● ● ● Ride more slowly than you would without a load. The more weight you carry, the slower you should go. Although conditions vary, it is good practice not to exceed 2nd gear whenever you are carrying heavier loads or when towing a trailer. Allow more braking distance. A heavier vehicle takes longer to stop. Avoid making sharp turns unless at very slow speeds. Avoid hills and rough terrain. Choose terrain carefully.
U4XE16.book Page 13 Monday, March 24, 2003 3:14 PM EBU13440 WARNING _ Indicates a potential hazard that could result in serious injury or death.
U4XE16.
U4XE16.
U4XE16.book Page 3 Monday, March 24, 2003 3:14 PM WARNING _ Indicates a potential hazard that could result in serious injury or death. GETTING TO KNOW YOUR ATV This ATV is mainly for utility use, but may also be used for recreation. This section, Riding your ATV, provides general ATV riding instructions for recreational riding. The skills and techniques described in this section, however, are appropriate for all types of riding.
U4XE16.book Page 4 Monday, March 24, 2003 3:14 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.
U4XE16.book Page 5 Monday, March 24, 2003 3:14 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.
U4XE16.book Page 6 Monday, March 24, 2003 3:14 PM This ATV is designed to carry operator and cargo 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.
U4XE16.book Page 7 Monday, March 24, 2003 3:14 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.
U4XE16.book Page 8 Monday, March 24, 2003 3:14 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.
U4XE16.book Page 9 Monday, March 24, 2003 3:14 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.
U4XE16.book Page 10 Monday, March 24, 2003 3:14 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 top speed, and turning it out increases top speed. (See page 4-5 for details.) WARNING _ Indicates a potential hazard that could result in serious injury or death.
U4XE16.book Page 11 Monday, March 24, 2003 3:14 PM Loading and accessories 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. 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.
U4XE16.book Page 12 Monday, March 24, 2003 3:14 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.
U4XE16.book Page 13 Monday, March 24, 2003 3:14 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.
U4XE16.book Page 14 Monday, March 24, 2003 3:14 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.
U4XE16.book Page 15 Monday, March 24, 2003 3:14 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.
U4XE16.book Page 16 Monday, March 24, 2003 3:14 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.
U4XE16.book Page 17 Monday, March 24, 2003 3:14 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.
U4XE16.book Page 18 Monday, March 24, 2003 3:14 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.
U4XE16.book Page 19 Monday, March 24, 2003 3:14 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.
U4XE16.book Page 20 Monday, March 24, 2003 3:14 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”.
U4XE16.book Page 21 Monday, March 24, 2003 3:14 PM With the engine idling, lift the shift pedal to the 1st gear position and then release the parking brake. Apply the throttle slowly and smoothly. The centrifugal clutch will engage and you will start to accelerate. Once the ATV has attained adequate speed, release the throttle and lift the shift pedal to the 2nd gear position. Release the shift pedal and apply the throttle smoothly. Use this same procedure as you move into the higher gears.
U4XE16.book Page 22 Monday, March 24, 2003 3:14 PM CAUTION: WARNING _ Do not shift gears without releasing the throttle. Damage to the engine or drive train may occur. POTENTIAL HAZARD Engaging a lower gear when the engine speed is too high. WHAT CAN HAPPEN The wheels could stop rotating. This could cause loss of control, an accident and injury. It could also cause engine or drive train damage. HOW TO AVOID THE HAZARD Make sure the engine has sufficiently slowed before shifting to a lower gear.
U4XE16.book Page 23 Monday, March 24, 2003 3:14 PM TURNING YOUR ATV To achieve maximum traction while riding offroad, 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.
U4XE16.book Page 24 Monday, March 24, 2003 3:14 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.
U4XE16.book Page 25 Monday, March 24, 2003 3:14 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.
U4XE16.book Page 26 Monday, March 24, 2003 3:14 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.
U4XE16.book Page 27 Monday, March 24, 2003 3:14 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.
U4XE16.book Page 28 Monday, March 24, 2003 3:14 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.
U4XE16.book Page 29 Monday, March 24, 2003 3:14 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.
U4XE16.book Page 30 Monday, March 24, 2003 3:14 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.
U4XE16.
U4XE16.book Page 32 Monday, March 24, 2003 3:14 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. If your ATV does begin to tip over, gradually steer in the downhill direction if there are no obstacles in your path.
U4XE16.book Page 33 Monday, March 24, 2003 3:14 PM 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.
U4XE16.book Page 34 Monday, March 24, 2003 3:14 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 in) 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.
U4XE16.book Page 35 Monday, March 24, 2003 3:14 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.
U4XE16.book Page 36 Monday, March 24, 2003 3:14 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.
U4XE16.book Page 37 Monday, March 24, 2003 3:14 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. To reduce the tendency for the front wheels to slide in loose or slippery conditions, positioning your weight over the front wheels will sometimes help.
U4XE16.book Page 38 Monday, March 24, 2003 3:14 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.
U4XE16.book Page 39 Monday, March 24, 2003 3:14 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.
U4XE16.book Page 40 Monday, March 24, 2003 3:14 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.
U4XE16.book Page 1 Monday, March 24, 2003 3:14 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.
U4XE16.book Page 2 Monday, March 24, 2003 3:14 PM WARNING 1. Owner’s tool kit 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.
U4XE16.book Page 3 Monday, March 24, 2003 3:14 PM EBU00261 PERIODIC MAINTENANCE/LUBRICATION INITIAL ITEM ROUTINE 1 month Valves* • Check valve clearance. • Adjust if necessary. Spark plug • Check condition. • Adjust gap and clean. • Replace if necessary. Air filter element • Clean. • Replace if necessary. Carburetor* • Check starter (choke) operation. • Adjust engine idling speed. Cylinder head breather system* • Check breather hose for cracks or damage. • Replace if necessary.
U4XE16.book Page 4 Monday, March 24, 2003 3:14 PM INITIAL ITEM * ROUTINE 1 month Wheels* • Check balance/damage/runout. • Repair if necessary. Wheel bearings* • Check bearing assemblies for looseness/damage. • Replace if damaged. Front and rear suspension* • Check operation. • Correct if necessary. Steering system* • • • • Steering shaft* • Lubricate every 6 months with lithium-soap-based grease (allpurpose grease). Fittings and fasteners* • Check all chassis fittings and fasteners.
U4XE16.book Page 5 Monday, March 24, 2003 3:14 PM EBU11002 Engine oil Engine oil level measurement 1. Place the machine on a level surface. 2. Warm up the engine for several minutes and stop it. Wait at least ten minutes for the oil to drain back into the crankcase before checking the oil level. CAUTION: _ Make sure no foreign material enters the crankcase. _ NOTE: Be sure to wait at least ten minutes until the oil level settles before checking. _ _ 3.
U4XE16.book Page 6 Monday, March 24, 2003 3:14 PM Engine oil replacement and oil filter element cleaning 1. Place the machine on a level surface. 2. Warm up the engine for several minutes and stop it. 3. Place a container under the engine to collect the used oil. 4. Remove the engine oil filler cap and then the drain bolt to drain the oil. 1. Engine oil drain bolt 3. Compression spring CAUTION: _ When removing the drain bolt, the compression spring, oil strainer and O-ring will fall out.
U4XE16.book Page 7 Monday, March 24, 2003 3:14 PM 5. Remove the oil filter cover and oil filter element. 6. Clean the oil strainer and oil filter element with solvent. 7. Inspect the O-ring and replace it if damaged. 8. Install the oil filter element, O-ring and oil filter cover. 9. Install the oil strainer, compression spring, O-ring and drain bolt. 10. Tighten the drain bolt and the oil filter cover bolts to the specified torques. CAUTION: _ 1. Oil filter cover 2.
U4XE16.book Page 8 Monday, March 24, 2003 3:14 PM 11. Fill the engine with oil and install the engine oil filler cap. CAUTION: _ If oil leakage is found, stop the engine immediately and check for the cause. Recommended engine oil: See page 10-2. Oil quantity: Without oil filter element removal: 1.5 L (1.3 Imp qt, 1.6 US qt) With oil filter element removal: 1.6 L (1.4 Imp qt, 1.7 US qt) _ CAUTION: _ Be sure no foreign material enters the crankcase. _ 12.
U4XE16.book Page 9 Monday, March 24, 2003 3:14 PM EBU11450 Final gear oil Final gear oil measurement 1. Place the machine on a level surface. 2. Remove the oil filler bolt, and then check the oil level in the final gear case. NOTE: The oil level should be at the brim of the filler hole. _ _ 3. If the oil is below the brim of the filler hole, add sufficient oil of the recommended type to raise it to the correct level. 1. Final gear oil 3.
U4XE16.book Page 10 Monday, March 24, 2003 3:14 PM Final gear oil replacement 1. Remove the final gear case cover by removing the bolts. 1. Final gear case cover 2. Place the machine on a level surface. 3. Place a container under the final gear case to collect the used oil. 4. Remove the oil filler bolt and the drain bolt to drain the oil. 2. Bolt (× 3) 1. Final gear oil drain bolt 5. Install the drain bolt, and then tighten it to the specified torque.
U4XE16.book Page 11 Monday, March 24, 2003 3:14 PM EBU11820 Spark plug 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. For example, a very white center electrode porcelain color could indicate an intake air leak or carburetion problem for that cylinder. Do not attempt to diagnose such problems yourself. Instead, take the ATV to a Yamaha dealer.
U4XE16.book Page 12 Monday, March 24, 2003 3:14 PM Before installing the spark plug, measure the electrode gap with a wire thickness gauge and adjust it to specification. When installing the spark plug, always clean the gasket surface and its mating surface. Wipe off any grime from the threads and tighten it to the specified torque. Spark plug gap: 0.6–0.7 mm (0.024–0.028 in) Tightening torque: Spark plug: 17.5 Nm (1.75 m·kgf, 12.5 ft·lbf) a.
U4XE16.book Page 13 Monday, March 24, 2003 3:14 PM EBU13010 Air filter element cleaning 1. Remove the seat. (See page 4-14 for seat removal and installation procedures.) 2. Remove the air filter case cover by unhooking the holders. 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 1. Air filter case check hose 8-13 2.
U4XE16.book Page 14 Monday, March 24, 2003 3:14 PM 3. Pull the air filter element out. 4. Remove the foam cover from the air filter element. 1. Air filter element 1. Air filter element 8-14 2.
U4XE16.book Page 15 Monday, March 24, 2003 3:14 PM 5. Tap the element lightly to remove most of the dust and dirt. Blow out the remaining dirt with compressed air as shown. If the air filter element is damaged, replace it. WARNING POTENTIAL HAZARD Using low flash point solvents or gasoline to clean the foam cover. 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 foam cover. 7.
U4XE16.book Page 16 Monday, March 24, 2003 3:14 PM 10. Install the air filter element. 11. Install the air filter case cover by fastening the holders. 12. Install the seat. CAUTION: _ Never operate the engine with the air filter element removed. This will allow unfiltered air to enter, causing rapid engine wear and possible engine damage. Additionally, operation without the air filter element will affect carburetor jetting with subsequent poor performance and possible engine overheating.
U4XE16.book Page 17 Monday, March 24, 2003 3:14 PM EBU13620 Spark arrester cleaning Select a well-ventilated area free of combustible materials and make sure the exhaust pipe and muffler are cool. 1. Remove the purging bolt. 3. Stop the engine and allow the exhaust pipe to cool. 4. Install the purging bolt and tighten it. 1. Purging bolt 2.
U4XE16.book Page 18 Monday, March 24, 2003 3:14 PM EBU00296 WARNING 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. POTENTIAL HAZARD Improperly purging the exhaust system. Hot exhaust system. WHAT CAN HAPPEN Could injure the eyes.
U4XE16.book Page 19 Monday, March 24, 2003 3:14 PM EBU13020 Idle speed adjustment NOTE: A diagnostic tachometer must be used for this procedure. _ _ 1. Start the engine and warm it up for a few minutes at approximately 1,000 to 2,000 r/min. Occasionally rev the engine to 4,000 to 5,000 r/min. The engine is warm when it quickly responds to the throttle. 2. Connect the tachometer to the spark plug lead, and then set the idle to the specified idling speed by adjusting the throttle stop screw.
U4XE16.book Page 20 Monday, March 24, 2003 3:14 PM EBU00307 EBU13090 Throttle lever adjustment Front brake pad check Check the brake pads for damage and wear. If a brake pad thickness is less than 1 mm (0.04 in), have a Yamaha dealer replace the pads as a set. NOTE: Adjust the engine idling speed before adjusting the throttle lever free play. 1. Loosen the locknut. 2. Turn the adjusting bolt until the throttle lever free play is 3–5 mm (0.12–0.20 in). 3. Tighten the locknut. 1.
U4XE16.book Page 21 Monday, March 24, 2003 3:14 PM EBU00313 EBU13040 Rear brake shoe inspection A wear indicator is provided on the rear brake. This indicator allows checking of brake shoe wear without disassembling the brake. Apply the rear brake and check the position of the indicator. If the indicator reaches the wear limit line, ask a Yamaha dealer to replace shoes as a set.
U4XE16.book Page 22 Monday, March 24, 2003 3:14 PM ● Have a Yamaha dealer check the cause if the brake fluid level goes down. EBU11860 Brake fluid replacement Complete fluid replacement should be done only by trained Yamaha service personnel. Have a Yamaha dealer replace the following components during periodic maintenance or when they are damaged or leaking. ● Replace the oil seals every two years. ● Replace the brake hoses every four years. 1.
U4XE16.book Page 23 Monday, March 24, 2003 3:14 PM EBU11870 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: sure the brakes operate ● Make smoothly and that the free play is correct.
U4XE16.book Page 24 Monday, March 24, 2003 3:14 PM EBU01075 Rear brake adjustment Brake pedal 1. Fully loosen the adjusting nut on the brake cable. 2. Turn the adjusting nut on the brake rod until free play is 20–30 mm (0.8–1.2 in). a. Rear brake pedal free play 1. Adjusting nut (brake cable) 2.
U4XE16.book Page 25 Monday, March 24, 2003 3:14 PM Brake lever 1. Loosen the locknut and fully turn in the adjusting bolt on the handlebar. 1. Locknut 2. Turn the adjusting nut on the brake cable to provide a gap of 0–1 mm (0–0.04 in) between the cam shaft lever and pin. 2. Adjusting bolt 1. Adjusting nut (brake cable) 3. Pin 8-25 2. Lever a.
U4XE16.book Page 26 Monday, March 24, 2003 3:14 PM 3. Turn the adjusting bolt until free play reaches 5–7 mm (0.2–0.3 in) at the lever pivot. 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: sure the brakes operate ● Make smoothly and that the free play is correct. ● Make sure the brakes do not drag.
U4XE16.book Page 27 Monday, March 24, 2003 3:14 PM EBU00834 EBU00346 Adjusting the rear brake light switch The rear brake light switch, which is activated by the brake pedal and brake levers, is properly adjusted when the brake light comes on just before braking takes effect. If necessary, adjust the brake light switch as follows. Clutch adjustment 1. Loosen the locknut. 2. Slowly turn the adjusting bolt counterclockwise until resistance is felt. Then, turn it 1/8 turn clockwise. 1. Locknut 1.
U4XE16.book Page 28 Monday, March 24, 2003 3:14 PM Lubricate the inner cables and the cable ends. If the cables do not operate smoothly, ask a Yamaha dealer to replace them. NOTE: Turn the adjusting bolt counterclockwise to decrease the clutch free play and turn it clockwise to increase the free play. Recommended lubricant: Yamaha chain and cable lube or SAE 10W30 motor oil EBU00356 Cable inspection and lubrication WARNING POTENTIAL HAZARD Damaged control cables.
U4XE16.book Page 29 Monday, March 24, 2003 3:14 PM EBU00717 Brake lever and brake pedal lubrication Lubricate the pivoting parts.
U4XE16.book Page 30 Monday, March 24, 2003 3:14 PM EBU14060 EBU01112 Steering shaft lubrication Lubricate the pivot point with a grease gun. 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. Recommended lubricant: Lithium-soap-based grease (all purpose grease) 1.
U4XE16.book Page 31 Monday, March 24, 2003 3:14 PM EBU01121 Wheel installation 1. Install the wheel and the nuts. NOTE: ● Tapered nuts are used for both the front and rear wheels. Install the nut with its tapered side towards the wheel. ● The arrow mark on the tire must point toward the rotating direction of the wheel. _ _ 1. Tapered nut 2. Lower the ATV so that the wheel is on the ground. 3. Tighten the wheel nuts to the specified torque. Wheel nut torque: Front: 55 Nm (5.
U4XE16.book Page 32 Monday, March 24, 2003 3:14 PM EBU00378 Battery Check the level of the battery fluid and see if the terminals are tight. Add distilled water if the fluid level is low. CAUTION: Do not leave or store the battery on its side. When inspecting the battery, be sure the breather hose is routed correctly. If it touches the frame or exists in such a way as to cause battery electrolyte or gas to exit onto the frame, structural and cosmetic damage to the machine can occur. 1. Battery 8-32 2.
U4XE16.book Page 33 Monday, March 24, 2003 3:14 PM WARNING EYES: Flush with water for 15 minutes and get prompt medical attention. Keep batteries away from sparks, flames, cigarettes or other sources of ignition. Ventilate when charging or using in a closed space. POTENTIAL HAZARD Failure to handle batteries or battery electrolyte carefully. WHAT CAN HAPPEN You could be poisoned. You could be severely burned by the sulfuric acid in battery electrolyte. Batteries produce explosive gases.
U4XE16.book Page 34 Monday, March 24, 2003 3:14 PM EBU00542 Replenishing the battery fluid A poorly maintained battery will corrode and discharge quickly. The battery fluid should be checked at least once a month. 1. The level should be between the upper and lower level marks. Use only distilled water if refilling is necessary. 1. Maximum level mark 3. Bolt (× 2) CAUTION: _ Normal tap water contains minerals which are harmful to a battery. Therefore, refill only with distilled water. _ 5.
U4XE16.book Page 35 Monday, March 24, 2003 3:14 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.
U4XE16.book Page 36 Monday, March 24, 2003 3:14 PM EBU10721 Replacing a headlight bulb If a headlight bulb burns out, replace the bulb as follows. 1. Remove the headlight cover by removing the screws. 1. Bulb holder cover (× 2) 3. Turn the bulb holder counterclockwise to remove the defective bulb. 1. Headlight cover 2. Screw (× 3) 2. Remove the bulb holder cover. 8-36 1.
U4XE16.book Page 37 Monday, March 24, 2003 3:14 PM EBU01089 Headlight beam adjustment WARNING CAUTION: POTENTIAL HAZARD The 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. _ It is advisable to have a Yamaha dealer make this adjustment.
U4XE16.book Page 38 Monday, March 24, 2003 3:14 PM EBU09451 Tail/brake light bulb replacement 1. Open the storage box. (See page 4-15.) 2. Remove the nuts together with the washers. 3. Remove the bulb holder (together with the bulb) by turning it counterclockwise. 1. Bulb holder 1. Storage box 4. Remove the defective bulb from the bulb holder by pushing it inward and turning it counterclockwise. 2.
U4XE16.book Page 39 Monday, March 24, 2003 3:14 PM EBU00412 1. Bulb holder 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.
U4XE16.book Page 40 Monday, March 24, 2003 3:14 PM WARNING POTENTIAL HAZARD Checking the fuel system while smoking or near an open flame. WHAT CAN HAPPEN Fuel can ignite or explode, causing severe injury or property damage. HOW TO AVOID THE HAZARD Do not smoke when checking the fuel system. Make sure there are no open flames or sparks in the area, including pilot lights from water heaters or furnaces.
U4XE16.book Page 41 Monday, March 24, 2003 3:14 PM EBU00440 Troubleshooting chart There is fuel. Turn the fuel cock to “OFF”. Remove the fuel hose. Some fuel. Turn the fuel cock to “RES”. Restart engine. No fuel. Supply fuel. 1. Fuel Check if there is fuel in the fuel tank. 2. Compression Use electric starter to see if there is compression. 3. Ignition There is compression. Compression normal. No compression. Ask a Yamaha dealer to inspect. Wet Check fuel flow. Wipe clean with dry cloth.
U4XE16.book Page 1 Monday, March 24, 2003 3:14 PM EBU00419 CLEANING AND STORAGE CAUTION: 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.
U4XE16.book Page 2 Monday, March 24, 2003 3:14 PM 6. Clean the seat with a vinyl upholstery cleaner to keep the cover pliable and glossy. 7. 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.
U4XE16.book Page 3 Monday, March 24, 2003 3:14 PM EBU00530 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.
U4XE16.book Page 4 Monday, March 24, 2003 3:14 PM 7. 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.
U4XE16.book Page 1 Monday, March 24, 2003 3:14 PM EBU00428 SPECIFICATIONS 1- 1 MODEL YFM250X Dimension: Overall length Overall width Overall height Seat height Wheel base Minimum ground clearance Minimum turning radius 2 3 1,940 mm ( 76.4 in) 1,005 mm ( 39.6 in) 1,118 mm ( 44.0 in) 780 mm ( 30.7 in) 1,170 mm ( 46.1 in) 150 mm ( 5.91 in) 2,900 mm (114.
U4XE16.book Page 2 Monday, March 24, 2003 3:14 PM MODEL YFM250X 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.
U4XE16.book Page 3 Monday, March 24, 2003 3:14 PM MODEL YFM250X Final gear case oil: Type Quantity: Periodic oil change 0.25 L (0.22 Imp qt, 0.26 US qt) Air filter: Dry element Fuel: Type Tank capacity Reserve amount UNLEADED GASOLINE ONLY 12 L (2.64 Imp gal, 3.17 US gal) 1.6 L (0.35 Imp gal, 0.42 US gal) Carburetor: Type × quantity Manufacturer BST34 × 1 MIKUNI Spark plug: Type/manufacturer Gap DR7EA / NGK 0.6–0.7 mm (0.024–0.
U4XE16.book Page 4 Monday, March 24, 2003 3:14 PM MODEL YFM250X Gear ratio: 1st 2nd 3rd 4th 5th Reverse 34/12 (2.833) 34/19 (1.789) 29/22 (1.318) 26/25 (1.040) 23/28 (0.821) 73/22 × 34/12 × 19/18 (9.924) Chassis: Frame type Caster angle Trail Steel tube 4° 20 mm (0.
U4XE16.book Page 5 Monday, March 24, 2003 3:14 PM MODEL YFM250X Wheel travel: Front Rear 125 mm (4.9 in) 135 mm (5.3 in) Electrical: Ignition system Generator system Battery type/voltage, capacity DC. C.D.I. A.C. magneto YB14A-A2/12V, 14Ah Headlight type: Incandescence Bulb voltage, wattage × quantity: Headlight Tail/brake light Indicator light: Neutral Reverse 12V, 25/25W × 2 12V, 5/21W × 1 12V, 1.7W × 1 12V, 1.
U4XE16.
U4XE16.book Page 1 Monday, March 24, 2003 3:14 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.
U4XE16.book Page 1 Monday, March 24, 2003 3:14 PM EBU00432 YAMAHA MOTOR CORPORATION, U.S.A.
U4XE16.
U4XE16.book Page 1 Monday, March 24, 2003 3:14 PM EBU00435 YAMAHA EXTENDED SERVICE (Y.E.S.
U4XE16.
U4XE16.book Page 3 Monday, March 24, 2003 3:14 PM EBU00436 WARNING Indicates a potential hazard that could result in serious injury or death.
U4XE16.
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.
Card.
Card.