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F40F OWNER’S MANUAL Read this manual carefully before operating this outboard motor. 6BG-28199-20-E0...
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EMU25052 Read this manual carefully before operating this outboard motor. Keep this manual onboard in a waterproof bag when boating. This manual should stay with the outboard motor if it is sold.
Any damage tain maximum enjoyment from your new resulting from neglect of these instructions is Yamaha. If you have any question about the not covered by warranty. operation or maintenance of your outboard Some countries have laws or regulations re- motor, please consult a Yamaha dealer.
Table of contents Safety information......1 Engine oil requirements ....12 Fuel requirements ......12 Outboard motor safety ....1 Gasoline .......... 12 Propeller..........1 Muddy or acidic water ....12 Rotating parts........1 Anti-fouling paint ......13 Hot parts ........... 1 Motor disposal requirements..
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Table of contents Digital tachometer ......25 Flushing device ....... 41 Tachometer ........26 Install cowling ........41 Trim meter........26 Power trim and tilt system ....42 Hour meter ........26 Battery ..........42 Low oil pressure-alert indicator ..26 Filling fuel........
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Table of contents Procedure ........61 Lubrication ........63 Flushing power unit ......63 Cleaning the outboard motor ..64 Checking painted surface of motor..........64 Periodic maintenance....65 Replacement parts ......65 Severe operating conditions ... 65 Maintenance chart 1 ....... 66 Maintenance chart 2 .......
Safety information EMU33622 tor and the clamp bracket when the motor is Outboard motor safety trimmed or tilted. Keep body parts out of this Observe these precautions at all times. area at all times. Be sure no one is in this EMU36500 area before operating the power trim and tilt Propeller...
Personal flotation devices cording to the boat manufacturers instruc- Have an approved personal flotation device tions. Overloading or incorrect weight (PFD) on board for every occupant. Yamaha distribution can compromise the boats han-...
Safety information dling and lead to an accident, capsizing or boating in hazardous weather. swamping. EMU33880 Passenger training EMU33772 Avoid collisions Make sure at least one other passenger is Scan constantly for people, objects, and oth- trained to operate the boat in the event of an er boats.
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 sto- len. 1. Key number...
General information ZMU01697 ZMU06391 1. CE marking location ZMU06040 EMU25213 C-Tick label Engines affixed with this label conform to certain portion(s) of the Australian Radio Communications Act. ZMU06391 1. C-Tick label location...
● Read all labels on the outboard motor and the boat. ● If you need any additional information, contact your Yamaha dealer. EMU33831 Warning labels If these labels are damaged or missing, contact your Yamaha dealer for replacements. F40F ZMU06393...
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General information ZMU05706 EMU33912 Contents of labels EWM01671 The above warning labels mean as follows. WARNING Read Owner’s Manuals and labels. ● EWM01691 Wear an approved personal flotation ● WARNING device (PFD). Emergency starting does not have start- Attach engine shut-off cord (lanyard) to ●...
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General information EMU33843 Electrical hazard Symbols The following symbols mean as follows. Notice/Warning ZMU05666 Remote control lever/gear shift lever operat- ing direction, dual direction ZMU05696 Read Owner’s Manual ZMU05667 Engine start/ Engine cranking ZMU05664 Hazard caused by continuous rotation ZMU05668 ZMU05665...
Specifications and requirements EMU35950 DPR6EB-9 Specifications Spark plug gap: TIP: 0.8–0.9 mm (0.031–0.035 in) Control system: “*” means, select the engine oil referring to F40FEHD Tiller the chart of engine oil paragraph. For further F40FEHT Tiller information, see page 12. F40FET Remote control EMU2821D Starting system:...
18.0 Nm (1.84 kgf-m, 13.3 ft-lb) working correctly and you should dis- EMU33553 continue using the outboard. Contact Installation requirements your Yamaha dealer. EMU33563 Boat horsepower rating The remote control unit must be equipped with a start-in-gear protection device(s). This...
Specifications and requirements EMU25694 Your Yamaha dealer can help you select the Battery requirements right propeller for your boating needs. Select EMU25721 a propeller that will allow the engine to reach Battery specifications the middle or upper half of the operating...
EMU37472 minimum octane rating. If knocking or ping- Engine oil requirements ing occurs, use a different brand of gasoline or premium unleaded fuel. Yamaha re- Recommended engine oil: comends that you use alcohol-free (see 4-stroke motor oil with a combination Gasohol) gasoline whenever possible.
(including metric sizes), and electrical tape. Waterproof flashlight with extra batteries. ● An extra engine shut-off cord (lanyard) ● with clip. Spare parts, such as an extra set of spark ● plugs. Consult your Yamaha dealer for details.
Components EMU2579K Components diagram TIP: * May not be exactly as shown; also may not be included as standard equipment on all mod- els. F40F YAMAHA SPEED Km/h knot mile TRIP TIME BATT mode ZMU06444 1. Top cowling 16. Flushing device 2.
Components ZMU05484 1. Tachometer unit (Square type)* 2. Speedometer unit (Square type)* 3. Fuel management meter (Square type)* EMU25802 Fuel tank If your model was equipped with a portable fuel tank, its function is as follows. EWM00020 WARNING ZMU02284 The fuel tank supplied with this engine is 1.
Components EMU25841 engine will continue to run at idle until the le- Fuel gauge ver is moved about 35° (a detent can be felt). This gauge is located on either the fuel tank Moving the lever farther opens the throttle, cap or on the fuel joint base.
Components trol lever in the neutral position and lift the the boat moves astern. neutral throttle lever. TIP: 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.
Components When constant speed is desired, tighten the 1. Throttle indicator adjuster to maintain the desired throttle set- EMU25974 ting. Throttle friction adjuster EMU25993 A friction device provides adjustable resis- Engine shut-off cord (lanyard) and tance to movement of the throttle grip or the clip remote control lever, and can be set accord- The clip must be attached to the engine shut-...
Components EMU26090 Main switch The main switch controls the ignition system; its operation is described below. “ ” (off) ● With the main switch in the “ ” (off) posi- tion, the electrical circuits are off, and the key can be removed. “...
Components set according to operator preference. An ad- Nut tightening torque: juster lever is located on the bottom of the 3.7 Nm (0.4 kgf-m, 2.7 ft-lb) tiller handle bracket. To increase resistance, turn the lever to the TIP: port side “A”. Steering movement is blocked when the ●...
Components ZMU06394 EMU26153 1. Power trim and tilt switch Power trim and tilt switch on bottom engine cowling EMU30900 Variable trolling RPM switches The power trim and tilt switch is located on The trolling speed can be adjusted when the the side of the bottom engine cowling.
Components EMU26244 EMU26312 Trim tab with anode Tilt lock mechanism The tilt lock mechanism is used to prevent EWM00840 WARNING the outboard motor from lifting out of the wa- An improperly adjusted trim tab could ter when in reverse gear. cause difficult steering.
The buzzer will sound intermittently only ● when the gear shift is in neutral. If the alert system has activated, stop the ● engine and consult a Yamaha dealer im- mediately. EMU26303 Alert indicator If the engine develops a condition which is...
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Components details on how to read the alert indicator, see page 34. 1. Alert indicator...
Instruments and indicators EMU36014 Indicators EMU36023 Low oil pressure-alert indicator If oil pressure drops too low, this indicator will light up. For further information, see page 34. ECM00022 NOTICE Do not continue to run the engine if the ● low oil pressure-alert indicator is on and the engine oil level is lower.
Instruments and indicators EMU36050 Tachometer The tachometer displays engine speed in hundreds of revolutions per minute (r/min). For example, if the tachometer display reads “22” then the engine speed is 2200 r/min. EMU26621 Trim meter This meter shows the trim angle of your out- board motor.
Instruments and indicators ZMU01736 1. Speedometer 1. Low oil pressure-alert indicator 2. Fuel gauge EMU26583 3. Trip meter/clock/voltmeter Overheat-alert indicator 4. Alert indicator(s) If the engine temperature rises too high, the All segments of the display will light momen- alert indicator will start to blink. For further in- tarily after the main switch is turned on and formation on reading the indicator, see page will return to normal thereafter.
Press the “ ” (mode) button until the the gauge will give false readings. Consult desired hour is displayed. your Yamaha dealer on how to correctly set Press the “ ” (set) button again, the the selector switch. NOTICE: Running out minute display will begin blinking.
It has functions of trim has activated. For charging the battery, con- meter, adjusting trolling speed, cooling wa- sult your Yamaha dealer. ter/engine temperature display, battery volt- age display, total hour/trip hour display, oil pressure display, water detection alert, en- gine trouble alert, and periodic maintenance notification.
If the buzzer consult your Yamaha dealer. The tachome- sounds and the water separator-alert indica- ter unit is available in round or square types. tor blinks, consult your Yamaha dealer im- Check your tachometer unit type. mediately. TIP: To stop the buzzer, press the “...
In such an event, stop the engine immediately and see page 83 of this manual to drain the water from the fuel filter. Get ZMU05425 back to the port soon and consult a Yamaha ECM00920 dealer immediately. NOTICE In such an event, the engine will not oper- ate properly.
Instruments and indicators port soon if the low battery voltage-alert de- vice has activated. For charging the battery, consult your Yamaha dealer. ZMU05436 1. Set button 2. Mode button ZMU05427 EMU36241 6Y8 Multifunction speedometers The speedometer unit shows the boat speed and has functions of fuel meter and system voltage display.
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Instruments and indicators ation. For more information, see the operation manual originally supplied with the meter. ZMU05438 1. Set button 2. Mode button ZMU05439 1. Fuel flow meter 2. Multifunction display...
Alert system ECM00091 NOTICE Do not continue to operate the engine if a alert device has activated. Consult your Yamaha dealer if the problem cannot be located and corrected. EMU26837 ZMU03025 Overheat alert This engine has an overheat-alert device. If...
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The buzzer will sound. ● If the alert system has activated, stop the en- gine as soon as it is safe to do so. Check the oil level and add oil as needed. If the oil level is correct, consult your Yamaha dealer.
Test runs at differ- centerline (keel line) of the boat. ent heights can help determine the optimum mounting height. Consult your Yamaha deal- er or boat manufacturer for further informa- tion on determining the proper mounting...
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Installation ZMU01762 ECM01631 NOTICE Check that the idle hole stays high ● enough to keep out water getting inside engine even if the boat is in stationary with maximum load. Incorrect engine height or obstructions ● to the smooth flow of water (such as the design or condition of the boat, or ac- cessories such as transom ladders or depth finder transducers) can create...
Operation EMU36380 TIP: First-time operation Failure to follow the break-in procedure EMU36390 could result in reduced engine life or even Fill engine oil severe engine damage. Run the engine in The engine is shipped from the factory with- the water, under load (in gear with a propel- out engine oil.
2. Clip level mark and lower level mark. Consult 3. Engine shut-off switch your Yamaha dealer if the oil level is out of specified level or if it appears milky or dirty.
Operation ZMU06400 ZMU06401 1. Oil dipstick 1. Fitting 2. Flushing device EMU36952 Install cowling Be sure that a cowling lock lever is re- leased. Be sure that the rubber seal is seated all the way around the engine. Place the cowling on top of the seal. Check to be sure the rubber seal fits cor- rectly all the way around the engine.
Operation Yamaha dealer. ZMU06402 1. Trim and tilt rod EMU34581 Power trim and tilt system Check that the trim and tilt rod is free of EWM01930 corrosion or other flaws. WARNING Tilt the outboard motor down. Check Never get under the lower unit while it ●...
Operation some gasoline in your eyes, see your EMU27451 Operating engine doctor immediately. If gasoline spills EMU27465 on your skin, wash with soap and wa- Sending fuel (portable tank) ter. If gasoline spills on your clothing, EWM00420 change your clothes. WARNING Stop the engine.
Operation line to the joint on the fuel tank. EMU27493 Starting engine EWM01600 WARNING Before starting the engine, make sure that the boat is tightly moored and that you can steer clear of any obstructions. Be sure there are no swimmers in the wa- ter near you.
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Operation TIP: The start-in-gear protection device prevents the engine from starting except when in neu- tral. Attach the engine shut-off cord to a se- cure place on your clothing, or your arm or leg. Then install the clip on the other end of the cord into the engine shut-off switch.
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Operation off cord to a secure place on your cloth- ing, or your arm or leg while operating. Do not attach the cord to clothing that could tear loose. Do not route the cord where it could become entangled, pre- venting it from functioning.
Consult your Yamaha dealer if to neutral. the problem cannot be located and cor- EMU36980 rected.
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Operation swimmers or obstacles in the water near you. ECM01610 NOTICE Warm up the engine before shifting into gear. Until the engine is warm, the idle speed may be higher than normal. High idle speed can prevent you from shifting back to neutral.
Operation EMU31742 Stopping boat EWM01510 WARNING Do not use the reverse function to slow ● down or stop the boat as it could cause you to lose control, be ejected, or im- pact the steering wheel or other parts of the boat.
Operation 1. “ ” switch 2. “ ” switch To increase the trolling speed, press the “ ” switch. To decrease the trolling speed, press the “ ” switch. TIP: The trolling speed changes approximately ● 50 r/min each time a switch is pressed. If the trolling speed has been adjusted, the ●...
Operation trim angle. The trim angle of the outboard motor helps determine the position of the bow of the boat in the water. Correct trim angle will help im- prove performance and fuel economy while reducing strain on the engine. Correct trim angle depends upon the combination of boat, engine, and propeller.
Operation not adjust the trim angle with this To raise the bow (trim-out), press the switch switch while the boat is moving. “ ” (up). To lower the bow (trim-in), press the switch Adjust the outboard motor trim angle using “...
Operation position to support the engine. To raise the bow (“trim-out”), tilt the engine To lower the bow (“trim-in”), tilt the engine down. Make test runs with the trim set to different angles to find the position that works best for your boat and operating conditions.
Operation duce salt corrosion. sition. EWM00221 WARNING Be sure all people are clear of the out- board motor when tilting up and down, Body parts can be crushed between the motor and the clamp bracket when the motor is trimmed or tilted. EWM00250 WARNING ZMU06406...
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Operation ZMU03196 ZMU06407 Press the power trim and tilt switch “ ” Push the tilt support knob into the clamp (up) until the outboard motor has tilted bracket support engine. up completely. WARNING! After tilting the outboard motor, be sure to support it with the tilt support knob or tilt support lever.
Operation ZMU06396 ZMU06408 Models equipped with trim rods: Once Slowly tilt the outboard motor down. the outboard motor is supported with the Place the tilt lock lever in the lock posi- tilt support lever, press the power trim tion. and tilt switch “ ”...
Operation Push the power trim and tilt switch “ ” to allow operation in shallow water. (down) to lower the outboard motor to EWM00271 WARNING the desired position. Run the boat at the lowest possible ● speed when using the shallow water cruising system.
Operation Otherwise severe damage from overheat- ing can result. EMU32912 Procedure for power trim and tilt models Place the remote control lever / gear shift lever in neutral. Pull the tilt lock lever up to the release position. ZMU06406 Slightly tilt the outboard motor up to the desired position and push the tilt lock le- ver down to the lock position.
Cruising in muddy, turbid, or acidic water Yamaha strongly recommends that you use the optional chromium-plated water pump kit (see page 12) if you use the outboard motor in acidic water or water with a lot of sediment in it, such as muddy or turbid (cloudy) water.
Maintenance por separator for a prolonged period of time will break down and could cause damage to the fuel line. EMU28304 Procedure EMU28334 Flushing in a test tank ECM00300 NOTICE ZMU02051 Do not run the engine without supplying it with cooling water. Either the engine 1.
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If the overheat alert device is activated, ● ning the outboard motor at high turn the engine off, and consult your speed while on the flushing attach- Yamaha dealer. ment, otherwise overheating could Run the engine at a fast idle for a few occur. [ECM02000] minutes in neutral position.
75. Inspect the oil for the pres- ence of water that indicates a leaky seal. Seal replacement should be performed ZMU06413 by an authorized Yamaha dealer prior to use. 1. Vapor separator Grease all grease fittings. For further de- 2.
A touch-up paint is avail- Tighten the connector securely. NO- able from your Yamaha dealer. TICE: Do not leave the garden hose connector loose on the bottom cowl- ing fitting or let the hose hang free during normal operation.
Operating continuously at a low engine ● to perform a maintenance procedure, speed (rpm) for many hours have a Yamaha dealer or other qualified Brief periods of rapid acceleration and de- ● mechanic do the work. celeration followed by engine shut off be-...
The “ ” symbol indicates the check-ups which you may carry out yourself. The “ ” symbol indicates work to be carried out by your Yamaha dealer. Initial Every 20 hours Item...
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Maintenance Initial Every 20 hours Item Actions hours (1 hours (3 hours (5 months) year) years) years) Fuel filter (can be dis- Inspection or replace- assembled) ment as necessary Fuel line(High pres- Inspection sure) Fuel line(High pres- Inspection or replace- sure) ment as necessary Fuel line(Low pres-...
Wire harness connec- Inspection or replace- tions/Wire coupler con- ment as necessary nections (Yamaha) Meter/gauge Inspection Inspection and clean- (Yamaha) Fuel tank ing as necessary EMU34451 Maintenance chart 2 Every Item Actions 1000 hours Guide exhaust/exhaust Inspection or replace-...
Instead, take the outboard motor to a and other deposits are excessive, you Yamaha dealer. You should periodically re- should replace the spark plug with an- move and inspect the spark plug because...
Maintenance EMU37492 Changing engine oil ECM01710 NOTICE Change the engine oil after the first 20 hours of operation or 3 months, and ev- ery 100 hours or at 1-year intervals there- after. Otherwise the engine will wear quickly. ZMU06418 The engine oil should be extracted with an oil changer.
Check that each connector is engaged se- ● per and lower marks. Consult your curely. Yamaha dealer if the oil level is out of specified level. ZMU06436 ZMU05091 1. Lower level mark 2.
Maintenance Check each of the propeller blades for ● wear, erosion from cavitation or ventila- tion, or other damage. Check the propeller shaft for damage. ● Check the splines for wear or damage. ● Check for fish line tangled around the pro- ●...
EMU29287 tion and be lost. Changing gear oil EWM00800 Apply Yamaha marine grease or a cor- WARNING rosion resistant grease to the propeller Be sure the outboard motor is securely ● shaft.
If the oil is milky, water 9 Nm (0.9 kgf-m, 6.6 ft-lb) is getting into the gear case which can cause gear damage. Consult a EMU29302 Cleaning fuel tank Yamaha dealer for repair of the lower EWM00920 unit seals. [ECM00711] WARNING TIP:...
Dispose of old gasoline according to lo- ● anodes on equipped models. Consult a cal regulations. Yamaha dealer for inspection and replace- Empty the fuel tank into an approved ment of internal anodes attached to the pow- container. er unit.
WARNING tery’s charge. If the battery needs charg- Battery electrolytic fluid is poisonous ing, consult your Yamaha dealer. and caustic, and batteries generate ex- Check the battery connections. They plosive hydrogen gas. When working...
Maintenance ATIVE (-) terminal. 1. Red cable 2. Black cable 3. Battery The electrical contacts of the battery and cables must be clean and properly con- nected, or the battery will not start the engine. EMU29371 Disconnecting the battery Turn off the battery cut-off switch (if equipped) and main switch.
Q. Has fuel pump malfunctioned? If your outboard motor requires repair, bring A. Have serviced by a Yamaha dealer. it to your Yamaha dealer. If the engine trouble-alert indicator is flash- Q. Are spark plug(s) fouled or of incorrect ing, consult your Yamaha dealer.
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Q. Is fuel contaminated or stale? A. Fill tank with clean, fresh fuel. Q. Is carburetor clogged? A. Have serviced by a Yamaha dealer. Q. Is fuel filter clogged? A. Clean or replace filter. Q. Is fuel joint connection incorrect? A.
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Q. Is fuel system obstructed? Q. Is water pump or thermostat faulty? A. Check for pinched or kinked fuel line or A. Have serviced by a Yamaha dealer. other obstructions in fuel system. Q. Is there excess water in fuel filter cup? Q.
EWM00631 Q. Is steering pivot loose or damaged? WARNING A. Tighten or have serviced by a Yamaha Substituting an incorrect fuse or a piece dealer. of wire could allow excessive current EMU29433 flow.
Trouble Recovery charged battery or a failure with the power trim and tilt unit , the engine can be tilted manually. Loosen the manual valve screw by turn- ing it clockwise until it stops. ZMU04095 1. Manual valve screw Put the engine in the desired position, ZMU06422 then tighten the manual valve screw by turning it counterclockwise.
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Trouble Recovery hazard. If the water separator-alert indicator on the 6Y8 Multifunction tachometer blinks, perform the following procedure. ZMU06425 1. Water detection switch coupler Unscrew the filter cup from the filter housing. NOTICE: Be careful not to twist the water detection switch lead 1.
11. Start the engine and make sure that the you when pulling the starter rope. It water separator-alert indicator remains could whip behind you and injure off. Have a Yamaha dealer inspect the someone. outboard motor after returning to port. An unguarded, rotating flywheel is very ●...
Trouble Recovery plug wire, spark plug cap, or other elec- trical components when starting or op- erating the motor. You could get an electrical shock. EMU29583 Emergency starting engine Remove the top cowling. Remove the flywheel cover. Turn on the main switch. ON START ZMU06429 Prepare the engine for starting.
EMU33501 Treatment of submerged motor If the outboard motor is submerged, immedi- ately take it to a Yamaha dealer. Otherwise some corrosion may begin almost immedi- ately. NOTICE: Do not attempt to run the outboard motor until it has been com- pletely inspected.
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YAMAHA MOTOR CO., LTD. Printed in Japan September 2008–0.1 × 1 ! Printed on recycled paper...