F75D F90D OWNER’S MANUAL YAMAHA MOTOR CORPORATION, USA Printed in Japan May 2004–2.0 × 1 CR Printed on recycled paper U.S.A.
ZMU01690 Read this owner’s manual carefully before operating your outboard motor.
U6D610E0.book Page 1 Tuesday, April 20, 2004 1:52 PM 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.
U6D610E0.book Page 1 Tuesday, April 20, 2004 1:52 PM 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..........................
U6D610E0.book Page 2 Tuesday, April 20, 2004 1:52 PM Table of contents Procedure..................................... 29 Trimming outboard motor .......... 29 Adjusting trim angle...................... 30 Adjusting boat trim........................ 31 Tilting up and down ................... 32 Procedure for tilting up ................. 32 Procedure for tilting down............. 33 Cruising in shallow water .......... 34 Power trim and tilt models / power tilt models .......................
U6D610E0.book Page 1 Tuesday, April 20, 2004 1:52 PM 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.
U6D610E0.book Page 2 Tuesday, April 20, 2004 1:52 PM General information ZMU01699 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.
U6D610E0.book Page 3 Tuesday, April 20, 2004 1:52 PM 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 ● ● ● 3 Before mounting or operating the outboard motor, read this entire manual.
U6D610E0.book Page 4 Tuesday, April 20, 2004 1:52 PM 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.
U6D610E0.book Page 5 Tuesday, April 20, 2004 1:52 PM General information your convenience only. Consult your local U.S. Coast Guard Auxiliary or Department of Motor Vehicles for a complete set of rules governing the waters in which you will be using your boat. In other words, follow the standard rules except when a collision will occur unless both vessels try to avoid each other. If that is the case, both vessels become “Give-Way” vessels.
U6D610E0.book Page 6 Tuesday, April 20, 2004 1:52 PM General information 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. passing you, you should maintain your speed and direction so that the other vessel can steer itself around you.
U6D610E0.book Page 7 Tuesday, April 20, 2004 1:52 PM General information 3. In a narrow channel, a sailing vessel should not hamper the safe passage of a power-driven vessel which can navigate only in such a channel. Reading buoys and other markers The waters of the United states are marked for safe navigation by the lateral system of buoyage.
U6D610E0.book Page 8 Tuesday, April 20, 2004 1:52 PM General information ZMU01708 EMU25540 Fueling instructions ● EWM00010 WARNING GASOLINE AND ITS VAPORS ARE HIGHLY FLAMMABLE AND EXPLOSIVE! ● ● 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.
U6D610E0.book Page 9 Tuesday, April 20, 2004 1:52 PM 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. Change clothing if gasoline spills on it.
U6D610E0.book Page 10 Tuesday, April 20, 2004 1:52 PM 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): 380.
U6D610E0.book Page 11 Tuesday, April 20, 2004 1:52 PM General information For instructions on propeller removal and installation, see page 50. EMU25770 Start-in-gear protection Yamaha outboard motors or Yamaha-approved remote control units are equipped with start-in-gear protection device(s). This feature permits the engine to be started only when it is in neutral. Always select neutral before starting the engine.
U6D610E0.book Page 12 Tuesday, April 20, 2004 1:52 PM 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. Top cowling lock lever(s) 3. Anti-cavitation plate 4. Trim tab (anode) 5. Propeller* 6. Cooling water inlet 7. Clamp bracket 8. Flushing device 9. Power trim and tilt switch 10.Remote control box (side mount type)* 11.Digital speedometer* 12.
U6D610E0.book Page 13 Tuesday, April 20, 2004 1:52 PM 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 EMU26190 Remote control lever Moving the lever forward from the neutral position engages forward gear. Pulling the lever back from neutral engages reverse. The engine will continue to run at idle until the lever is moved about 35° (a detent can be felt).
U6D610E0.book Page 14 Tuesday, April 20, 2004 1:52 PM Basic components To increase resistance, turn the adjuster clockwise. To decrease resistance, turn the adjuster counterclockwise. EWM00030 WARNING Do not overtighten the friction adjuster. If there is too much resistance, it could be difficult to move throttle lever or grip, which could result in an accident. ● Avoid accidentally pulling the lanyard during normal operation. Loss of engine power means the loss of most steering control.
U6D610E0.book Page 15 Tuesday, April 20, 2004 1:52 PM Basic components (down) tilts the outboard motor down and trims it down. When the switch is released, the outboard motor will stop in its current position. EWM01030 WARNING EMU26141 Power trim and tilt switch on remote control or tiller handle The power trim and tilt system adjusts the outboard motor angle in relation to the transom. Pressing the switch “ ” (up) trims the outboard motor up, then tilts it up.
U6D610E0.book Page 16 Tuesday, April 20, 2004 1:52 PM Basic components placed to be sure steering is correct. Be sure you have tightened the bolt after adjusting the trim tab. If the boat tends to veer the left (port side), turn the trim tab rear end to the port side “A” in the figure. If the boat tends to veer the right (starboard side), turn the trim tab end to the starboard side “B” in the figure.
U6D610E0.book Page 17 Tuesday, April 20, 2004 1:52 PM Basic components 1 1 2 3 4 5 6 ZMU04226 1. Top cowling lock lever(s) EMU26460 Flushing device This device is used to clean the cooling water passages of the motor using a garden hose and tap water. 1. 2. 3. 4. 5. 6. 7. 7 ZMU01840 Tachometer Trim meter Hour meter Low oil pressure warning indicator Overheat warning indicator Set button Mode button NOTE: For details on usage, see page 40.
U6D610E0.book Page 18 Tuesday, April 20, 2004 1:52 PM Basic components 1 ZMU01736 1. Low oil pressure warning indicator EMU26581 Overheat warning indicator (digital type) If the engine temperature rises too high, the warning indicator will start to blink. For further information on reading the indicator, see page 21. ECM00050 CAUTION: Do not continue to run the engine if the overheat warning indicator is on. Serious engine damage will occur. 1. 2. 3. 4.
U6D610E0.book Page 19 Tuesday, April 20, 2004 1:52 PM Basic components EMU26620 ● Trim meter (digital type) This meter shows the trim angle of your outboard motor. NOTE: ● ● Memorize the trim angles that work best for your boat under different conditions. Adjust the trim angle to the desired using the power trim and tilt switch. If the trim angle of your motor exceeds the trim operating range, the top segment on the trim meter display will blink.
U6D610E0.book Page 20 Tuesday, April 20, 2004 1:52 PM Basic components EMU26700 Clock NOTE: Press the “ ” (mode) button repeatedly until the indicator on the face of the gauge points to “ ” (time). To set the clock, be sure the gauge is in the “ ” (time) mode. Press the “ ” (set) button; the hour display will begin blinking. Press the “ ” (mode) button until the desired hour is displayed. Press the “ ” (set) button again, the minute display will begin blinking.
U6D610E0.book Page 21 Tuesday, April 20, 2004 1:52 PM Basic components ECM00870 CAUTION: Get back to the port soon if a warning device has activated. For charging the battery, consult your Yamaha dealer. ZMU01757 ● The buzzer will sound (if equipped on the tiller handle, remote control box, or main switch panel). 1. Low battery indicator EMU26801 Warning system ECM00090 CAUTION: Do not continue to operate the engine if a warning device has activated.
U6D610E0.book Page 22 Tuesday, April 20, 2004 1:52 PM Basic components ● ● The engine speed will automatically decrease to about 2000 r/min. The low oil pressure warning indicator will light. ZMU01828 ● The buzzer will sound. If the warning system has activated, stop the engine as soon as it is safe to do so. Check the oil level and add oil as needed. If the oil level is correct and the warning device does not switch off, consult your Yamaha dealer.
U6D610E0.book Page 23 Tuesday, April 20, 2004 1:52 PM 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.
U6D610E0.book Page 24 Tuesday, April 20, 2004 1:52 PM Operation tends to occur, thus reducing the propulsion; and if the propeller tips cut the air, the engine speed will rise abnormally and cause the engine to overheat. If the mounting height is too low, the water resistance will increase and thereby reduce engine efficiency. Mount the outboard motor so that the anti-cavitation plate is in alignment with the bottom of the boat.
U6D610E0.book Page 25 Tuesday, April 20, 2004 1:52 PM Operation ● ● Check fuel line connections to be sure they are tight (if equipped Yamaha fuel tank or boat tank). Be sure the fuel tank is positioned on a secure, flat surface, and that the fuel line is not twisted or flattened, or likely to contact sharp objects (if equipped Yamaha fuel tank or boat tank). 1 EMU27130 Controls ● ● ● ● Check throttle, shift, and steering for proper operation before starting the engine.
U6D610E0.book Page 26 Tuesday, April 20, 2004 1:52 PM Operation 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. As gasoline has changed, the amount of additives such as aromatics and oxygenates has increased.
U6D610E0.book Page 27 Tuesday, April 20, 2004 1:52 PM Operation 3. Turn the main switch to “ ” (on). NOTE: Dual engine users: When the main switch is turned on, the buzzer operates for a few seconds then stops automatically. The buzzer also operates if one of the engines stalls. 2. Attach the engine stop switch lanyard to a secure place on your clothing, or your arm or leg. Then install the lock plate on the other end of the lanyard into the engine stop switch.
U6D610E0.book Page 28 Tuesday, April 20, 2004 1:52 PM Operation start the engine. The starter can also be damaged. If the engine will not start after 5 seconds of cranking, return the main switch to “ ” (on), wait 10 seconds, then crank the engine again. EMU27670 Warming up engine EMU30030 Manual start and electric start models 1. 2. 3. After starting the engine, allow it to idle for 3 minutes to warm up. Failure to do so will shorten engine life.
U6D610E0.book Page 29 Tuesday, April 20, 2004 1:52 PM Operation 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. Turn the main switch to “ ” (off). 2. After stopping the engine, disconnect the fuel line or close the fuel cock if there is a fuel joint or a fuel cock on the boat.
U6D610E0.book Page 30 Tuesday, April 20, 2004 1:52 PM Operation engine, and propeller. Correct trim is also affected by variables such as the load in the boat, sea conditions, and running speed. EMU27881 Adjusting trim angle Power trim and tilt models EWM00750 EWM00740 WARNING 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. This increases the possibility of an accident.
U6D610E0.book Page 31 Tuesday, April 20, 2004 1:52 PM Operation UP 1 DN ZMU04231 1. Power trim and tilt switch To raise the bow (trim-out), press the switch “ ” (up). To lower the bow (trim-in), press the switch “ ” (down). Make test runs with the trim set to different angles to find the position that works best for your boat and operating conditions.
U6D610E0.book Page 32 Tuesday, April 20, 2004 1:52 PM Operation ECM00241 CAUTION: ● ● Before tilting the outboard motor, stop the engine by following the procedure on page 29. Never tilt the outboard motor while the engine is running. Severe damage from overheating can result. Do not tilt up the engine by pushing the tiller handle (if equipped) because this could break the handle.
U6D610E0.book Page 33 Tuesday, April 20, 2004 1:52 PM Operation ECM00250 UP CAUTION: Be sure to retract the trim rods completely during mooring. This protects the rods from marine growth and corrosion which could damage the power trim and tilt mechanism. EMU28053 ZMU04232 4. Push the tilt support knob into the clamp bracket or pull the tilt support lever toward you to support the engine. Procedure for tilting down Power trim and tilt models / power tilt models 1.
U6D610E0.book Page 34 Tuesday, April 20, 2004 1:52 PM Operation DN ZMU04255 EMU28060 Cruising in shallow water 2. Slightly tilt the outboard motor up to the desired position using the power trim / tilt switch. 3. To return the outboard motor to the normal running position, press the power trim / tilt switch and slowly tilt the outboard motor down. The outboard motor can be tilted up partially to allow operation in shallow water.
U6D610E0.book Page 35 Tuesday, April 20, 2004 1:52 PM Operation Cruising in turbid water Yamaha strongly recommends that you use the optional chromium-plated water pump kit if you use the outboard motor in turbid (muddy) water conditions.
U6D610E0.book Page 36 Tuesday, April 20, 2004 1:52 PM Maintenance EMU28216 Specifications Dimension: Overall length: 817 mm (32.2 in) Overall width: 479 mm (18.9 in) Overall height L: 1582 mm (62.3 in) Overall height X: 1710 mm (67.3 in) Transom height L: 536 mm (21.1 in) Transom height X: 664 mm (26.1 in) Weight (without propeller) L: 168.0 kg (370 lb) Weight (without propeller) X: 172.0 kg (379 lb) Performance: Full throttle operating range: 5000–6000 r/min Maximum output: F75TR 55.
U6D610E0.book Page 37 Tuesday, April 20, 2004 1:52 PM 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.
U6D610E0.book Page 38 Tuesday, April 20, 2004 1:52 PM Maintenance EMU28301 Procedure EMU30001 Flushing with the flushing attachment 1. Wash the outboard motor body using fresh water. For further information, see page 40. 2. Fill the fuel tank with fresh fuel and add one ounce of “Yamaha Fuel Conditioner and Stabilizer” (Part No. LUB-FUELC-1200) to each gallon of fuel. NOTE: The use of “Yamaha Fuel Conditioner and Stabilizer” eliminates the need to drain the fuel system.
U6D610E0.book Page 39 Tuesday, April 20, 2004 1:52 PM Maintenance equipped. When properly done, the engine will smoke excessively and almost stall. 8. Remove the flushing attachment and wipe off any excess water. 9. Install the top cowling and propeller. 10. Drain the cooling water completely out of the motor. Clean the body thoroughly. NOTE: A flushing attachment is available from your Yamaha dealer. EMU28400 Lubrication (except oil injection models) 1. 2. 3.
U6D610E0.book Page 40 Tuesday, April 20, 2004 1:52 PM Maintenance 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. Store the battery on a level surface in a cool, dry, well-ventilated place out of direct sunlight. 4.
U6D610E0.book Page 41 Tuesday, April 20, 2004 1:52 PM Maintenance A service manual is available for purchase through your Yamaha dealer for owners who have the mechanical skills, tools, and other equipment necessary to perform maintenance not covered by this owner’s manual. EMU28510 Replacement parts ZMU04265 NOTE: For cooling system flushing instructions, see page 37. EMU28460 Checking painted surface of motor Check the motor for scratches, nicks, or flaking paint.
U6D610E0.book Page 42 Tuesday, April 20, 2004 1:52 PM Maintenance EMU30560 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.
U6D610E0.book Page 43 Tuesday, April 20, 2004 1:52 PM Maintenance Initial Item Engine oil Oil filter (cartridge) Spark plug(s) Timing belt Actions Every 10 hours 50 hours 100 hours 200 hours (1 month) (3 months) (6 months) (1 year) Inspection / change Change Cleaning / adjustment / replacement Inspection / replacement NOTE: When operating in salt water, turbid or muddy water, the engine should be flushed with clean water after each use.
U6D610E0.book Page 44 Tuesday, April 20, 2004 1:52 PM Maintenance EMU28931 Greasing Yamaha marine grease (Water resistant grease) ZMU04266 EMU28951 Cleaning and adjusting spark plug EWM00560 WARNING When removing or installing a spark plug, be careful not to damage the insulator. A damaged insulator could allow external sparks, which could lead to explosion or fire. The spark plug is an important engine component and is easy to inspect.
U6D610E0.book Page 45 Tuesday, April 20, 2004 1:52 PM Maintenance ● ● Check for fuel leakage regularly. If any fuel leakage is found, the fuel system must be repaired by a qualified mechanic. Improper repairs can make the outboard unsafe to operate. Check the fuel lines for leaks, crack, or malfunction. If a problem is found, your Yamaha dealer or other qualified mechanic should repair it immediately. 1. Spark plug gap 2. Spark plug I.D. mark (NGK) Spark plug gap: 1.0–1.1 mm (0.039–0.
U6D610E0.book Page 46 Tuesday, April 20, 2004 1:52 PM Maintenance ● ● ● ● ● 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. There will be fuel in the fuel filter. Keep away from sparks, cigarettes, flames or other sources of ignition. This procedure will allow some fuel to spill. Catch fuel in a rag. Wipe up any spilled fuel immediately.
U6D610E0.book Page 47 Tuesday, April 20, 2004 1:52 PM Maintenance ECM00490 CAUTION: This procedure must be performed while the outboard motor is in the water. A flushing attachment or test tank can be used. A diagnostic tachometer should be used for this procedure. Results may vary depending on whether testing is conducted with the flushing attachment, in a test tank, or with the outboard motor in the water. 1. Start the engine and allow it to warm up fully in neutral until it is running smoothly.
U6D610E0.book Page 48 Tuesday, April 20, 2004 1:52 PM Maintenance 1 1 ZMU04271 ZMU04241 1. Drain screw 3. Put a new gasket on the oil drain screw. Apply a light coat of oil to the gasket and install the drain screw. Drain screw tightening torque: 28.0 Nm (20.7 ft-lb) (2.86 kgf-m) NOTE: 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.
U6D610E0.book Page 49 Tuesday, April 20, 2004 1:52 PM Maintenance 2. Oil dipstick 3. Upper level mark 7. NOTE: Dispose of used oil according to local regulations. ● For more information on the disposal of used oil, consult your Yamaha dealer. Change the oil more often when operating the engine under adverse conditions such as extended trolling. EMU29112 Checking wiring and connectors ● ● EMU29161 Checking power trim and tilt system NOTE: ● If any leaks are found, consult your Yamaha dealer.
U6D610E0.book Page 50 Tuesday, April 20, 2004 1:52 PM Maintenance NOTE: Consult your Yamaha dealer if any operation is abnormal. EMU29171 Checking propeller EWM00321 WARNING You could be seriously injured if the engine accidentally starts when you are near the propeller. ● Before inspecting, removing, or installing the propeller, remove the spark plug caps from the spark plugs.
U6D610E0.book Page 51 Tuesday, April 20, 2004 1:52 PM Maintenance 3. EMU29193 Removing the propeller 1. Straighten the cotter pin and pull it out using a pair of pliers. Remove the propeller nut, washer, and spacer (if equipped). 2. 4. Install the spacer (if equipped) and the 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. 1 3 6 4 5 1. 2. 3. 4. 5. 6. 3.
U6D610E0.book Page 52 Tuesday, April 20, 2004 1:52 PM Maintenance 2 1 ZMU03273 1. Gear oil drain screw 2. Oil level plug NOTE: ZMU03274 6. 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. If the magnetic gear oil drain screw equipped: remove all metal particles from the screw before installing it. 7. 4. Yamaha outboard motors are protected from corrosion by sacrificial anodes.
U6D610E0.book Page 53 Tuesday, April 20, 2004 1:52 PM 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.
U6D610E0.book Page 54 Tuesday, April 20, 2004 1:52 PM Maintenance 2. 3. Always keep the battery in a good state of charge. Installing a voltmeter will help you monitor your battery. If you will not use the boat for a month or more, remove the battery from the boat and store it in a cool, dark place. Completely recharge the battery before using it. If the battery will be stored for longer than a month, check the specific gravity of the fluid at least once a month and recharge the battery when it is low.
U6D610E0.book Page 55 Tuesday, April 20, 2004 1:52 PM Maintenance tom 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.
U6D610E0.book Page 56 Tuesday, April 20, 2004 1:52 PM Trouble Recovery EMU29422 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.
U6D610E0.book Page 57 Tuesday, April 20, 2004 1:52 PM 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.
U6D610E0.book Page 58 Tuesday, April 20, 2004 1:52 PM 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.
U6D610E0.book Page 59 Tuesday, April 20, 2004 1:52 PM Trouble Recovery 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. Engine vibrates excessively. Q. Is propeller damaged? A. Have propeller repaired or replaced. 1. 2. 3. Q. Is propeller shaft damaged? A. Have serviced by a Yamaha dealer. 4. Q.
U6D610E0.book Page 60 Tuesday, April 20, 2004 1:52 PM Trouble Recovery 1 ZMU04249 1. Manual valve screw 2. Put the engine in the desired position, then tighten the manual valve screw by turning it clockwise. EMU29540 Starter will not operate 1. 2. 3. 4. 5. 6. 7.
U6D610E0.book Page 61 Tuesday, April 20, 2004 1:52 PM Trouble Recovery ● ● ● ● 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. Be sure no one is standing behind you when pulling the starter rope. It could whip behind you and injure someone. An unguarded, rotating flywheel is very dangerous.
U6D610E0.book Page 62 Tuesday, April 20, 2004 1:52 PM Trouble Recovery EMU29760 Treatment of submerged motor If the outboard motor is submerged, immediately take it to a Yamaha dealer. Otherwise some corrosion may begin almost immediately. If you cannot immediately take the outboard motor to a Yamaha dealer, follow the procedure below in order to minimize engine damage. EMU29790 Procedure 1. 2. 3. 4. 5. Thoroughly wash away mud, salt, seaweed, and so on, with fresh water.
U6D610E0.book Page 63 Tuesday, April 20, 2004 1:52 PM Consumer information EMU29811 Important warranty information for U.S.A.
U6D610E0.
U6D610E0.book Page 65 Tuesday, April 20, 2004 1:52 PM Consumer information EMU29830 YAMAHA MOTOR CORPORATION, U.S.A.
U6D610E0.
U6D610E0.book Page 67 Tuesday, April 20, 2004 1:52 PM Consumer information EMU29840 IMPORTANT WARRANTY INFORMATION IF YOU USE YOUR YAMAHA OUTSIDE U.S.A.
F75D F90D OWNER’S MANUAL YAMAHA MOTOR CORPORATION, USA Printed in Japan May 2004–2.0 × 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