F250D LF250D OWNER’S MANUAL YAMAHA MOTOR CORPORATION, USA Printed in Japan November 2004–2.3 × 1 CR Printed on recycled paper U.S.A.
ZMU01690 Read this owner’s manual carefully before operating your outboard motor.
U6P210E0.book Page 1 Thursday, October 28, 2004 10:56 AM Important manual information EMU25100 To the owner Thank you for choosing a Yamaha outboard motor. This Owner’s Manual contains information needed for proper operation, maintenance and care. A thorough understanding of these simple instructions will help you obtain maximum enjoyment from your new Yamaha. If you have any question about the operation or maintenance of your outboard motor, please consult a Yamaha dealer.
U6P210E0.book Page 1 Thursday, October 28, 2004 10:56 AM Table of contents General information ...................... 1 Identification numbers record ...... 1 Outboard motor serial number ....... 1 Key number .................................... 1 Emission control information ....... 1 North American models.................. 1 Star labels ...................................... 2 Safety information ....................... 3 Important labels........................... 4 Warning labels......................
U6P210E0.book Page 2 Thursday, October 28, 2004 10:56 AM Table of contents Operating engine....................... 30 Feeding fuel.................................. 30 Starting engine ............................. 30 Warming up engine ................... 32 Manual start and electric start models ...................................... 32 Shifting ...................................... 33 Forward (tiller handle and remote control models) .............
U6P210E0.book Page 3 Thursday, October 28, 2004 10:56 AM Table of contents YAMAHA MOTOR CORPORATION, U.S.A. FOUR-STROKE OUTBOARD MOTOR THREE-YEAR LIMITED WARRANTY ........... 71 IMPORTANT WARRANTY INFORMATION IF YOU USE YOUR YAMAHA OUTSIDE U.S.A. OR CANADA ..............
U6P210E0.book Page 1 Thursday, October 28, 2004 10:56 AM General information EMU25170 Identification numbers record EMU25182 Outboard motor serial number The outboard motor serial number is stamped on the label attached to the port side of the clamp bracket or the upper part of the swivel bracket. Record your outboard motor serial number in the spaces provided to assist you in ordering spare parts from your Yamaha dealer or for reference in case your outboard motor is stolen. 1.
U6P210E0.book Page 2 Thursday, October 28, 2004 10:56 AM General information ZMU05159 1. Star labels location EMU25262 Manufactured date label This label is attached to the clamp bracket or the swivel bracket. EMU25280 One Star—Low Emission The one-star label identifies engines that meet the Air Resources Board’s 2001 exhaust emission standards. Engines meeting these standards have 75% lower emissions than conventional carbureted two-stroke engines. These engines are equivalent to the U.S.
U6P210E0.book Page 3 Thursday, October 28, 2004 10:56 AM General information ● ● ZMU01703 ● EMU25300 Three Stars—Ultra Low Emission The three-star label identifies engines that meet the Air Resources Board’s 2008 exhaust emission standards. Engines meeting these standards have 65% lower emissions than One Star-Low-Emission engines. ● ● ZMU01704 EMU25361 Safety information ● ● ● Before mounting or operating the outboard motor, read this entire manual.
U6P210E0.book Page 4 Thursday, October 28, 2004 10:56 AM General information Stay informed about the weather. Check weather forecasts before boating. Avoid boating in hazardous weather. ● Tell someone where you are going: leave a Float Plan with a responsible person. Be sure to cancel the Float Plan when you return. ● Use common sense and good judgment when boating. Know your abilities, and be sure you understand how your boat handles under the different boating conditions you may encounter.
U6P210E0.book Page 5 Thursday, October 28, 2004 10:56 AM General information driving your boat. These rules are used internationally, and are also enforced by the United States Coast Guard and local agencies. You should be aware of these rules, and follow them whenever you encounter another vessel on the water. Several sets of rules prevail according to geographic location, but are all basically the same as the International Rules of the Road.
U6P210E0.book Page 6 Thursday, October 28, 2004 10:56 AM General information Meeting If you are meeting another power vessel head on, and are close enough to run the risk of collision, neither of you has the right-of-way! Both of you should alter course to avoid an accident. You should keep the other vessel on your port (left) side. This rule doesn’t apply if both of you will clear one another if you continue on your set course and speed.
U6P210E0.book Page 7 Thursday, October 28, 2004 10:56 AM General information Fishing vessel right-of-way All vessels which are fishing with nets, lines or trawls are considered to be “fishing vessels” under the International Rules. Vessels with trolling lines are not considered fishing vessels. Fishing vessels have the right-of-way regardless of position. Fishing vessels cannot, however, impede the passage of other vessels in narrow channels.
U6P210E0.book Page 8 Thursday, October 28, 2004 10:56 AM General information ZMU01708 EMU25540 Fueling instructions ● EWM00010 WARNING GASOLINE AND ITS VAPORS ARE HIGHLY FLAMMABLE AND EXPLOSIVE! 8 ● ● Do not smoke when refueling, and keep away from sparks, flames, or other sources of ignition. Stop engine before refueling. Refuel in a well-ventilated area. Refuel portable fuel tanks off the boat.
U6P210E0.book Page 9 Thursday, October 28, 2004 10:56 AM General information ● ● ● ● ● ● Take care not to spill gasoline. If gasoline spills, wipe it up immediately with dry rags. Do not overfill the fuel tank. Tighten the filler cap securely after refueling. If you should swallow some gasoline, inhale a lot of gasoline vapor, or get gasoline in your eyes, get immediate medical attention. If any gasoline spills onto your skin, immediately wash with soap and water.
U6P210E0.book Page 10 Thursday, October 28, 2004 10:56 AM General information tric system could perform poorly or be overloaded, causing electric system damage. For electric start models, choose a battery which meets the following specifications. Yamaha dealers stock a range of propellers, and can advise you and install a propeller on your outboard that is best suited to your application. EMU25711 Battery specifications Minimum cold cranking amps (CCA/SAE): 512.
U6P210E0.book Page 11 Thursday, October 28, 2004 10:56 AM Basic components EMU25795 Main components NOTE: * May not be exactly as shown; also may not be included as standard equipment on all models. 1. Top cowling 2. Anti-cavitation plate 3. Trim tab (anode) 4. Propeller* 5. Cooling water inlet 6. Clamp bracket 7. Top cowling lock lever(s) 8. Power trim and tilt switch 9. Flushing device 10.Remote control box (side mount type)* 11.Remote control box (binnacle mount type)* 12.
U6P210E0.book Page 12 Thursday, October 28, 2004 10:56 AM Basic components 2. 3. 4. 5. 6. 7. Remote control lever Neutral interlock trigger Neutral throttle lever Main switch / choke switch Engine stop lanyard switch Throttle friction adjuster 4. 5. 6. 7. Shift Fully closed Throttle Fully open F 2 1 4 N 1 R 3 4 2 6 5 7 4 2 7 ZMU04573 3 ZMU04569 1. 2. 3. 4.
U6P210E0.book Page 13 Thursday, October 28, 2004 10:56 AM Basic components ● NOTE: The neutral throttle lever will operate only when the remote control lever is in neutral. The remote control lever will operate only when the neutral throttle lever is in the closed position. ● After the button is pushed, the throttle begins to open after the remote control lever is moved at least 35°. After using the free accelerator, return the remote control lever to the neutral position.
U6P210E0.book Page 14 Thursday, October 28, 2004 10:56 AM Basic components NOTE: The engine cannot be started with the lock plate removed. ZMU04563 When constant speed is desired, tighten the adjuster to maintain the desired throttle setting. EMU25990 Engine stop lanyard switch The lock plate must be attached to the engine stop switch for the engine to run. The lanyard should be attached to a secure place on the operator’s clothing, or arm or leg.
U6P210E0.book Page 15 Thursday, October 28, 2004 10:56 AM Basic components With the main switch in the “ ” (start) position, the starter motor turns to start the engine. When the key is released, it returns automatically to the “ ” (on) position. EMU26151 Power trim and tilt switch on bottom engine cowling OFF ON START OFF The power trim and tilt switch is located on the side of the bottom engine cowling. Pressing the switch “ ” (up) trims the outboard motor up, then tilts it up.
U6P210E0.book Page 16 Thursday, October 28, 2004 10:56 AM Basic components EWM00840 NOTE: For instructions on using the power trim and tilt switch, see page 36. EMU26161 Power trim and tilt switches (twin binnacle type) The power trim and tilt system adjusts the outboard motor angle in relation to the transom. Pushing the switch “ ” (up) trims the outboard motor up, then tilts it up. Pressing the switch “ ” (down) tilts the outboard motor down and trims it down.
U6P210E0.book Page 17 Thursday, October 28, 2004 10:56 AM Basic components EMU26340 Tilt support lever for power trim and tilt or hydro tilt model To keep the outboard motor in the tilted up position, lock the tilt support lever to the clamp bracket. EMU26460 Flushing device This device is used to clean the cooling water passages of the motor using a garden hose and tap water. ZMU01864 EMU26382 Top cowling lock lever (pull up type) NOTE: For details on usage, see page 45.
U6P210E0.book Page 18 Thursday, October 28, 2004 10:56 AM Basic components EMU26491 ● Digital tachometer The tachometer shows the engine speed and has the following functions. NOTE: The low oil pressure warning indicator does not indicate the engine oil level. Use the oil dipstick to check the remaining oil quantity. For further information, see page 29. All segments of the display will light momentarily after the main switch is turned on and will return to normal thereafter. 1 2 3 1 4 5 6 1. 2.
U6P210E0.book Page 19 Thursday, October 28, 2004 10:56 AM Basic components EMU26600 Speedometer (digital type) This gauge shows the boat speed. 1. Cap 2. Selector switch (for speed unit) 3. Selector switch (for fuel sensor) 1. 2. 3. 4. Speedometer Fuel gauge Trip meter/clock/voltmeter Warning indicator(s) EMU26620 Trim meter (digital type) This meter shows the trim angle of your outboard motor. NOTE: NOTE: After the main switch is first turned on, all segments of the display come on as a test.
U6P210E0.book Page 20 Thursday, October 28, 2004 10:56 AM Basic components EMU26650 Hour meter (digital type) This meter shows the number of hours the engine has been run. It can be set to show the total number of hours or the number of hours for the current trip. The display can also be turned on and off.
U6P210E0.book Page 21 Thursday, October 28, 2004 10:56 AM Basic components ECM00880 NOTE: The clock operates on battery power. Disconnecting the battery will stop the clock. Reset the clock after connecting the battery. EMU26710 Fuel gauge CAUTION: Do not continue to operate the engine with full throttle if a warning device has activated. Get back to the port within trolling engine speed. The fuel level is indicated by eight segments. When all segments are showing, the fuel tank is full.
U6P210E0.book Page 22 Thursday, October 28, 2004 10:56 AM Basic components EMU26740 Fuel management meter The fuel management meter shows the state of the fuel consumption while the engine is running. 1 3 ZMU01749 2 ZMU01748 1. Fuel flow meter 2. Fuel consumption meter / Fuel economy meter / Twin engine speed synchronizer 3. Water separator warning indicator (operates only if the sensor has been installed) NOTE: After the main switch is first turned on, all segments of the display come on as a test.
U6P210E0.book Page 23 Thursday, October 28, 2004 10:56 AM Basic components ● The fuel consumption meter and fuel economy meter will indicate the same unit of measurement. EMU26760 Fuel consumption meter This gauge displays the total amount of fuel consumed since the gauge was last reset. Press the “ ” (mode) button repeatedly until the indicator on the face of the gauge points to total “ ” (total). To reset the total fuel consumption to zero, press the “ ” (set) and “ ” (mode) buttons at the same time.
U6P210E0.book Page 24 Thursday, October 28, 2004 10:56 AM Basic components Press the “ ” (mode) button repeatedly until the indicator on the face of the gauge points to “ ” (synchronizer). NOTE: This indicator only operates when a water separator sensor is equipped. ZMU01753 ZMU01755 EMU26801 1 Warning system ECM00090 2 CAUTION: 3 Do not continue to operate the engine if a warning device has activated. Consult your Yamaha dealer if the problem cannot be located and corrected. 4 5 ZMU01754 1.
U6P210E0.book Page 25 Thursday, October 28, 2004 10:56 AM Basic components ● The buzzer will sound. ● The low oil pressure warning indicator will light. ZMU01828 ● ON OFF START The buzzer will sound. ON OFF START ZMU04584 If the warning system has activated, stop the engine and check the cooling water inlet for clogging. NOTE: Dual engine drive users: Should the overheat warning system of one engine activate, the engine will slow down and the buzzer will sound.
U6P210E0.book Page 26 Thursday, October 28, 2004 10:56 AM Basic components ECM00100 CAUTION: Do not continue to run the engine if the low oil pressure warning indicator is on. Serious engine damage could occur.
U6P210E0.book Page 27 Thursday, October 28, 2004 10:56 AM Operation EMU26901 EWM00830 Installation ECM00110 CAUTION: Incorrect engine height or obstructions to smooth water flow (such as the design or condition of the boat, or accessories such as transom ladders or depth finder transducers) can create airborne water spray while the boat is cruising. Severe engine damage may result if the motor is operated continuously in the presence of airborne water spray.
U6P210E0.book Page 28 Thursday, October 28, 2004 10:56 AM Operation NOTE: ● ● 1. Center line (keel line) EMU26930 Mounting height (boat bottom) To run your boat at optimum efficiency, the water resistance (drag) of the boat and outboard motor must be made as little as possible. The mounting height of the outboard motor greatly affects the water resistance.
U6P210E0.book Page 29 Thursday, October 28, 2004 10:56 AM Operation EMU27101 Preoperation checks EWM00080 WARNING If any item in the preoperation check is not working properly, have it inspected and repaired before operating the outboard motor. Otherwise an accident could occur. ECM00120 CAUTION: ● Check that the battery is in good condition and the battery connections are secure. EMU27163 Checking the engine oil level 1. 2. 3. 4. Do not start the engine out of water.
U6P210E0.book Page 30 Thursday, October 28, 2004 10:56 AM Operation 3. Securely close the cap after filling the tank. Wipe up any spilled fuel. ● EMU27270 Ring Free Fuel Additive Gasoline is a precise blend of many different substances, each chosen to give certain characteristics. Gasoline blends have been changing in recent years in response to concerns about pollution and resulting emissions regulations. One of the most obvious changes has been the elimination of lead from most fuels.
U6P210E0.book Page 31 Thursday, October 28, 2004 10:56 AM Operation ● NOTE: The start-in-gear protection device prevents the engine from starting except when in neutral. Avoid accidentally pulling the lanyard during normal operation. Loss of engine power means the loss of most steering control. Also, without engine power, the boat could slow rapidly. This could cause people and objects in the boat to be thrown forward. N OFF ON START OFF ON START ZMU04588 2.
U6P210E0.book Page 32 Thursday, October 28, 2004 10:56 AM Operation ON START ZMU04590 4. Turn the main switch to “ ” (start), and hold it for a maximum of 5 seconds. Immediately after the engine starts, release the main switch to return it to “ ” (on). 5. EMU27670 Warming up engine EMU30030 Manual start and electric start models 1. ECM00191 CAUTION: ● ● 2. Never turn the main switch to “ ” (start) while the engine is running. Do not keep the starter motor turning for more than 5 seconds.
U6P210E0.book Page 33 Thursday, October 28, 2004 10:56 AM Operation ● hole is blocked. Consult your Yamaha dealer if the problem cannot be located and corrected. If the cooling passage is frozen, it may take awhile for water to start flowing out of the pilot hole. Remote control models Pull up the neutral interlock trigger (if equipped) and move the remote control lever quickly and firmly from neutral to forward.
U6P210E0.book Page 34 Thursday, October 28, 2004 10:56 AM Operation Remote control models Pull up the neutral interlock trigger (if equipped) and move the remote control lever quickly and firmly from neutral to reverse. OFF ON OFF ON N R ZMU04600 2. ZMU04598 3. EMU27820 Stopping engine Before stopping the engine, first let it cool off for a few minutes at idle or low speed. Stopping the engine immediately after operating at high speed is not recommended. EMU27851 Procedure 1.
U6P210E0.book Page 35 Thursday, October 28, 2004 10:56 AM Operation engine, and propeller. Correct trim is also affected by variables such as the load in the boat, sea conditions, and running speed. EWM00740 ● Use the power tilt switch located on the bottom engine cowling (if equipped) only when the boat is at a complete stop with the engine off. WARNING Excessive trim for the operating conditions (either trim up or trim down) can cause boat instability and can make steering the boat more difficult.
U6P210E0.book Page 36 Thursday, October 28, 2004 10:56 AM Operation EMU27911 Adjusting boat trim When the boat is on plane, a bow-up attitude results in less drag, greater stability and efficiency. This is generally when the keel line of the boat is up about 3 to 5 degrees. With the bow up, the boat may have a greater tendency to steer to one side or the other. Compensate for this as you steer. The trim tab can also be adjusted to help offset this effect.
U6P210E0.book Page 37 Thursday, October 28, 2004 10:56 AM Operation connect the fuel line if the outboard motor is equipped with a fuel joint. Otherwise fuel may leak. 2. 3. ECM00990 CAUTION: ● ● Disconnect the fuel line from the outboard motor or close the fuel cock. Press the power trim and tilt switch / power tilt switch “ ” (up) until the outboard motor has tilted up completely. Before tilting the outboard motor, follow the procedure under “Stopping engine” in this chapter.
U6P210E0.book Page 38 Thursday, October 28, 2004 10:56 AM Operation EMU28053 Procedure for tilting down ZMU01886 Power trim and tilt models / power tilt models 1. Push the power tilt / power trim and tilt switch “ ” (up) until the outboard motor is supported by the tilt rod and the tilt support lever / tilt support knob becomes free. 2. Release the tilt support lever or pull out the tilt support knob.
U6P210E0.book Page 39 Thursday, October 28, 2004 10:56 AM Operation ECM01490 CAUTION: DN ● ● ZMU04603 If the engine speed is suddenly increased when the outboard motor is partially tilted up, the power trim and tilt unit could be damaged. Do not tilt the outboard motor up so that the cooling water inlet on the lower unit is above the surface of the water when setting up for and cruising in shallow water. Otherwise severe damage from overheating can result.
U6P210E0.book Page 40 Thursday, October 28, 2004 10:56 AM Operation 3. To return the outboard motor to the normal running position, press the power trim / tilt switch and slowly tilt the outboard motor down. EMU28191 Cruising in other conditions Cruising in salt water After operating in salt water, wash out the cooling water passages with fresh water to prevent them from becoming clogged with salt deposits. NOTE: For cooling system flushing instructions, see page 42.
U6P210E0.book Page 41 Thursday, October 28, 2004 10:56 AM Maintenance EMU28216 Specifications Dimension: Overall length: 892 mm (35.1 in) Overall width: 634 mm (25.0 in) Overall height X: 1829 mm (72.0 in) Overall height U: 1956 mm (77.0 in) Transom height X: 643 mm (25.3 in) Transom height U: 770 mm (30.3 in) Weight (without propeller) X: 274.0 kg (604 lb) Weight (without propeller) U: 280.0 kg (617 lb) Performance: Full throttle operating range: 5000–6000 r/min Maximum output: 183.
U6P210E0.book Page 42 Thursday, October 28, 2004 10:56 AM Maintenance EMU28222 Transporting and storing outboard motor EWM00690 WARNING ● ● ● Leaking fuel is a fire hazard. When transporting and storing the outboard motor, close the air vent screw and fuel cock to prevent fuel from leaking. USE CARE when transporting fuel tank, whether in a boat or car. DO NOT fill fuel container to maximum capacity. Gasoline will expand considerably as it warms up and can build up pressure in the fuel container.
U6P210E0.book Page 43 Thursday, October 28, 2004 10:56 AM Maintenance ECM00310 CAUTION: Avoid running the outboard motor at high speed while on the flushing attachment, otherwise overheating could occur. ZMU04261 EMU28301 Procedure EMU30740 Flushing with the flushing attachment 1. Wash the outboard motor body using fresh water. For further information, see page 46. 2. Fill the fuel tank with fresh fuel and add one ounce of “Yamaha Fuel Conditioner and Stabilizer” (Part No.
U6P210E0.book Page 44 Thursday, October 28, 2004 10:56 AM Maintenance 6. Run the engine at a fast idle for a few minutes in neutral position while supplying fresh water. 7. Just prior to turning off the engine, quickly spray “Yamaha Stor-Rite Engine Fogging Oil” (Part No. LUB-STRRT-12-00) alternately into the intake silencer or the fogging hole of the silencer cover, if equipped. When properly done, the engine will smoke excessively and almost stall. 8.
U6P210E0.book Page 45 Thursday, October 28, 2004 10:56 AM Maintenance Batteries vary among manufacturers. Therefore the following procedures may not always apply. Consult your battery manufacturer’s instructions. Procedure 1. Disconnect and remove the battery from the boat. Always disconnect the black negative cable first to prevent the risk of shorting. 2. Clean the battery casing and terminals. Fill each cell to the upper level with distilled water. 3.
U6P210E0.book Page 46 Thursday, October 28, 2004 10:56 AM Maintenance cause serious overheating. Be sure the connector is tightened securely on the fitting after flushing the engine. NOTE: ● ● When flushing the engine with the boat in the water, tilting up the outboard motor until it is completely out of the water will achieve better results. For cooling system flushing instructions, see page 42. EMU28450 Cleaning the outboard motor After use, wash the exterior of the outboard motor with fresh water.
U6P210E0.book Page 47 Thursday, October 28, 2004 10:56 AM Maintenance EMU30561 Maintenance chart NOTE: ● ● ● ● ● Refer to the sections in this chapter for explanations of each owner-specific action. The maintenance cycle on these charts assume usage of 200 hours per year. Maintenance frequency should be adjusted according to usage conditions. Disassembly or repairs may be necessary depending on the outcome of maintenance checks.
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U6P210E0.book Page 50 Thursday, October 28, 2004 10:56 AM Maintenance EMU30770 Cleaning and adjusting spark plug 1. Remove the bolts that are securing the ignition coil cover, and then remove the cover. 2. Remove the bolts that are securing the spark plug cap, and then remove the cap. 3. Remove the spark plug. If electrode erosion becomes excessive, or if carbon and other deposits are excessive, you should replace the spark plug with another of the correct type.
U6P210E0.book Page 51 Thursday, October 28, 2004 10:56 AM Maintenance EMU28962 Checking fuel system EWM00060 WARNING Gasoline and its vapors are highly flammable and explosive. Keep away from sparks, cigarettes, flames, or other sources of ignition. EWM00910 WARNING 1. Spark plug gap 2. Spark plug I.D. mark (NGK) Spark plug gap: 1.0–1.1 mm (0.039–0.043 in) 5. When fitting the plug, always clean the gasket surface and use a new gasket.
U6P210E0.book Page 52 Thursday, October 28, 2004 10:56 AM Maintenance ● ● ● ● Fuel system parts leakage Fuel line joint leakage Fuel line cracks or other damage Fuel connector leakage EMU28980 Inspecting fuel filter EWM00310 WARNING Gasoline is highly flammable, and its vapors are flammable and explosive. ● If you have any question about properly doing this procedure, consult your Yamaha dealer. ● Do not perform this procedure on a hot or running engine. Allow the engine to cool.
U6P210E0.book Page 53 Thursday, October 28, 2004 10:56 AM Maintenance EMU29084 Changing engine oil EWM00760 WARNING ● ● Avoid draining the engine oil immediately after stopping the engine. The oil is hot and should be handled with care to avoid burns. Be sure the outboard motor is securely fastened to the transom or a stable stand. 3. ECM01240 CAUTION: Remove the oil filler cap. Add the correct amount of oil through the filler hole, and install the filler cap.
U6P210E0.book Page 54 Thursday, October 28, 2004 10:56 AM Maintenance 4. Start the engine and watch to make sure the low oil pressure warning indicator turns off. Make sure that there are no oil leaks. Draining the oil by removing the oil drain screw 1. Remove the four bolts to remove the apron from the starboard side. ECM00680 CAUTION: If the low oil pressure warning indicator does not turn off or if there are oil leaks, stop the engine and find the cause.
U6P210E0.book Page 55 Thursday, October 28, 2004 10:56 AM Maintenance NOTE: ● ● 5. If a torque wrench is not available when you are installing the drain screw, finger tighten the screw just until the gasket comes into contact with the surface of the drain hole. Then tighten 1/4 to 1/2 turn more. Tighten the drain screw to the correct torque with a torque wrench as soon as possible. Apply grease to the apron retaining bolts before tightening them.
U6P210E0.book Page 56 Thursday, October 28, 2004 10:56 AM Maintenance 5. 6. Check that the tilt rod and trim rods are free of corrosion or other flaws. Activate the tilt-down switch until the trim rods have retracted completely into the cylinders. ● Do not use your hand to hold the propeller when loosening or tightening the propeller nut. Put a wood block between the anti-cavitation plate and the propeller to prevent the propeller from turning. ZMU01941 7. 8.
U6P210E0.book Page 57 Thursday, October 28, 2004 10:56 AM Maintenance ● ● ● Check the splines / shear pin for wear or damage. Check for fish line tangled around the propeller shaft. Check the propeller shaft oil seal for damage. NOTE: If the shear pin equipped: it is designed to break if the propeller hits a hard underwater obstacle to help protect the propeller and drive mechanism. The propeller will then spin freely on the shaft. If this happens, the shear pin must be replaced.
U6P210E0.book Page 58 Thursday, October 28, 2004 10:56 AM Maintenance 1. Apply Yamaha marine grease or a corrosion resistant grease to the propeller shaft. Install the thrust washer and propeller on the propeller shaft. Install the spacer and washer. Tighten the propeller nut to the specified torque. Align the propeller nut with the propeller shaft hole. Insert a new cotter pin in the hole and bend the cotter pin ends. 2. 3. 4. 1. 2. 3.
U6P210E0.book Page 59 Thursday, October 28, 2004 10:56 AM Maintenance Recommended gear oil: Hypoid gear oil SAE#90 Gear oil quantity: F250TR 1150.0 cm³ (38.88 US oz) (40.56 Imp.oz) LF250TR 1000.0 cm³ (33.81 US oz) (35.27 Imp.oz) 6. 7. When the oil begins to flow out of the oil level plug hole, insert and tighten the oil level plug. Insert and tighten the gear oil drain screw. EMU29312 Inspecting and replacing anode(s) Yamaha outboard motors are protected from corrosion by sacrificial anodes.
U6P210E0.book Page 60 Thursday, October 28, 2004 10:56 AM Maintenance Drink large quantities of water or milk followed by milk of magnesia, beaten egg, or vegetable oil. Get immediate medical attention. Batteries also generate explosive hydrogen gas; therefore, you should always follow these preventive measures: ● Charge batteries in a well-ventilated area. ● Keep batteries away from fire, sparks, or open flames (for example: welding equipment, lighted cigarettes, and so on.
U6P210E0.book Page 61 Thursday, October 28, 2004 10:56 AM Maintenance ● The electrical contacts of the battery and cables must be clean and properly connected, or the battery will not start the engine. Connect the RED battery cable to the POSITIVE (+) terminal first. Then connect the BLACK battery cable to the NEGATIVE (-) terminal. 1. 2. 3. 4. Battery for starting Battery for accessories Large red lead for starting battery Small red lead for accessory battery charging (optional part) 5.
U6P210E0.book Page 62 Thursday, October 28, 2004 10:56 AM Maintenance EMU29400 Coating the boat bottom A clean hull improves boat performance. The boat bottom should be kept as clean of marine growth as possible. If necessary, the boat bottom can be coated with an anti-fouling paint approved for your area to inhibit marine growth. Do not use anti-fouling paint which includes copper or graphite. These paints can cause more rapid engine corrosion.
U6P210E0.book Page 63 Thursday, October 28, 2004 10:56 AM Trouble Recovery EMU29423 Troubleshooting A problem in the fuel, compression, or ignition systems can cause poor starting, loss of power, or other problems. This section describes basic checks and possible remedies, and covers all Yamaha outboard motors. Therefore some items may not apply to your model. If your outboard motor requires repair, bring it to your Yamaha dealer.
U6P210E0.book Page 64 Thursday, October 28, 2004 10:56 AM Trouble Recovery A. Check for pinched or kinked fuel line or other obstructions in fuel system. Q. Is fuel contaminated or stale? A. Fill tank with clean, fresh fuel. Q. Is fuel filter clogged? A. Clean or replace filter. Q. Have ignition parts failed? A. Have serviced by a Yamaha dealer. Q. Has warning system activated? A. Find and correct cause of warning. Q. Is spark plug gap incorrect? A. Inspect and adjust as specified. Q.
U6P210E0.book Page 65 Thursday, October 28, 2004 10:56 AM Trouble Recovery Q. Is load on boat improperly distributed? A. Distribute load to place boat on an even plane. A. Remove foreign matter and clean lower unit. Q. Is water pump or thermostat faulty? A. Have serviced by a Yamaha dealer. Q. Is fuel system obstructed? A. Check for pinched or kinked fuel line or other obstructions in fuel system. Q. Is there excess water in fuel filter cup? A. Drain filter cup. Q. Is fuel filter clogged? A.
U6P210E0.book Page 66 Thursday, October 28, 2004 10:56 AM Trouble Recovery A. Connect correctly. If the outboard motor hits an object in the water, follow the procedure below. Q. Is heat range of spark plug incorrect? A. Inspect spark plug and replace it with recommended type. Q. Is high pressure fuel pump drive belt broken? A. Have serviced by a Yamaha dealer. Q. Is engine not responding properly to shift lever position? A. Have serviced by a Yamaha dealer. 1. 2. Engine vibrates excessively. Q.
U6P210E0.book Page 67 Thursday, October 28, 2004 10:56 AM Trouble Recovery EMU29471 Replacing fuse If a fuse has blown, remove the electrical cover, open the fuse holder and remove the fuse with a fuse puller (if equipped). Replace it with a spare one of the proper amperage. EWM00630 WARNING Be sure to use the specified fuse. An incorrect fuse or a piece of wire could allow excessive current flow. This could cause electric system damage and a fire hazard. 1. Electrical cover 2. Fuse puller 3.
U6P210E0.book Page 68 Thursday, October 28, 2004 10:56 AM Trouble Recovery 3. 8. Isolator fuse (80 A) EMU29520 Power trim and tilt will not operate 4. If the engine cannot be tilted up or down with the power trim and tilt/ the power tilt because of a discharged battery or a failure with the power trim and tilt unit/the power tilt, the engine can be tilted manually. 1. Loosen the manual valve screw by turning it counterclockwise until it stops. 5.
U6P210E0.book Page 69 Thursday, October 28, 2004 10:56 AM Consumer information EMU29811 Important warranty information for U.S.A.
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U6P210E0.book Page 71 Thursday, October 28, 2004 10:56 AM Consumer information EMU29830 YAMAHA MOTOR CORPORATION, U.S.A.
U6P210E0.
U6P210E0.book Page 73 Thursday, October 28, 2004 10:56 AM Consumer information EMU29840 IMPORTANT WARRANTY INFORMATION IF YOU USE YOUR YAMAHA OUTSIDE U.S.A.
F250D LF250D OWNER’S MANUAL YAMAHA MOTOR CORPORATION, USA Printed in Japan November 2004–2.3 × 1 CR Printed on recycled paper U.S.A.
MONTH MOIS PHONE NUMBER ( ) NUMÉRO DE TÉLÉPHONE ADDRESS ADRESSE OWNER’S NAME NOM DU PROPRIÉTAIRE DATE SOLD DATE DE LIVRAISON CITY VILLE YAMAHA MOTOR CO., LTD. MADE IN JAPAN PAYS D'ORIGINE JAPON DAY JOUR FIRST PRÉNOM STATE/PROVINCE PROVINCE STREET RUE YEAR ANNÉE PLEASURE LOISIR COMMERCIAL COMMERCIAL ZIP CODE POSTAL LAST NOM DE FAMILLE USAGE (Check One) UTILISATION (En cocher un.) DEALER NAME NOM DU CONCESSIONNAIRE YAMAHA DEALER NUMBER NO.
Warranty card 2/27/02 11:47 AM Page 2 ATTN: WARRANTY DEPARTMENT PLACE POSTAGE HERE
