Therefore some items may not apply to ev- Yamaha. If you have any question about the ery model. operation or maintenance of your outboard EMU25120 motor, please consult a Yamaha dealer.
Table of contents General information ......1 Steering friction adjuster ....15 Trim tab with anode......15 Identification numbers record... 1 Trim rod (tilt pin) ......16 Outboard motor serial number ..1 Tilt lock mechanism......16 Key number........1 Tilt support knob......
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Table of contents Tilting up and down ......35 Removing the propeller ....60 Procedure for tilting up Removing the propeller ....60 (manual tilt models) ...... 36 Installing the propeller ..... 61 Procedure for tilting up ....37 Installing the propeller ..... 61 Procedure for tilting down Changing gear oil ......
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...
Be sure you understand each item before operating. Do not overpower the boat with this out- YAMAHA MOTOR CO.,LTD. board motor. Overpowering the boat could result in loss of control. The rated power of Motorfamilie...
General information use. when boating. Know your abilities, and be Never operate after drinking alcohol or tak- sure you understand how your boat han- ing drugs. About 50% of all boating fatali- dles under the different boating conditions ties involve intoxication. you may encounter.
General information starting device. inhale a lot of gasoline vapor, or get The engine will not start unless the shift gasoline in your eyes, get immediate control is in neutral position. medical attention. If any gasoline spills onto your skin, im- EMU25464 mediately wash with soap and water.
CAUTION: higher with the above models. Consult your Do not use a battery that does not meet Yamaha dealer for details on installing an the specified capacity. If a battery which optional Rectifier Regulator. does not meet specifications is used, the...
EMU25760 on the engine. Start-in-gear protection Yamaha outboard motors are fitted with pro- Yamaha outboard motors affixed with the pellers chosen to perform well over a range pictured label or Yamaha-approved remote of applications, but there may be uses where...
Basic components EMU25795 Main components NOTE: * May not be exactly as shown; also may not be included as standard equipment on all mod- els. F9.9C, F13.5A, F15A 13 14 ZMU04892 1. Top cowling 15. Engine stop button/Engine stop lanyard switch* 2.
Basic components FT9.9D 15 14 ZMU04891 1. Top cowling 18. Tilt lock lever* 2. Top cowling lock lever(s) 19. Remote control box (side mount type)* 3. Drain screw 20. Fuel tank 4. Anti-cavitation plate EMU25802 5. Propeller Fuel tank 6. Cooling water inlet If your model was equipped with a portable 7.
Basic components the tank can be filled with fuel. To remove the cap, turn it counterclockwise. EMU25860 Air vent screw This screw is on the fuel tank cap. To loosen the screw, turn it counterclockwise. EMU26180 Remote control The remote control lever actuates both the shifter and the throttle.
Basic components 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. 1. Neutral “ ” 2. Forward “ ” 3. Reverse “ ” 4. Shift 5.
Basic components ZMU01997 ZMU04878 1. Forward “ ” 2. Neutral “ ” 3. Reverse “ ” EMU25941 Throttle grip The throttle grip is on the tiller handle. Turn the grip counterclockwise to increase speed and clockwise to decrease speed. ZMU04879 EMU25922 Gear shift lever Pulling the gear shift lever towards you puts...
Basic components ZMU02000 When constant speed is desired, tighten the 1. Throttle indicator adjuster to maintain the desired throttle set- EMU25970 ting. Throttle friction adjuster EMU25990 Engine stop lanyard switch A friction device provides adjustable resis- tance to movement of the throttle grip or the The lock plate must be attached to the en- remote control lever, and can be set accord- gine stop switch for the engine to run.
Basic components NOTE: The engine cannot be started with the lock plate removed. ZMU02083 EMU26011 Choke knob for pull type To supply the engine with the rich fuel mix- ZMU02003 ture required to start, pull out this knob. 1. Lanyard 2.
Basic components EMU26080 EMU26102 Starter button Power tilt switch To start the engine with the electric starter, The power tilt system adjusts the outboard push the starter button. motor angle in relation to the transom. Push- ing the switch “ ”...
Basic components To decrease resistance, turn the lever to the counterclockwise. right. EWM00040 WARNING EWM00040 WARNING Do not overtighten the friction adjuster. If Do not overtighten the friction adjuster. If there is too much resistance, it could be there is too much resistance, it could be difficult to steer, which could result in an difficult to steer, which could result in an accident.
Basic components ZMU03097 ZMU02008 1. Tilt lock lever 1. Trim tab 2. Bolt To lock it, set the tilt lock lever in the “ ” (lock) position. To release, push the tilt lock EMU26261 Trim rod (tilt pin) lever in the “ ” (release) position. The position of the trim rod determines the EMU26320 Tilt support knob...
Basic components ZMU02009 ZMU02078 EMU26360 1. Top cowling lock lever(s) Power tilt unit This unit tilts the outboard motor up and EMU26460 Flushing device down and is controlled with the power tilt This device is used to clean the cooling wa- switch.
ECM00090 CAUTION: Do not continue to operate the engine if a warning device has activated. Consult your Yamaha dealer if the problem can- not be located and corrected. EMU26813 Overheat warning This engine has an overheat warning device. If the engine temperature rises too high, the ZMU03026 warning device will activate.
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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. ECM00100 CAUTION: Do not continue to run the engine if the low oil pressure warning indicator is on.
Operation EMU26901 specific boat and motor combination. Installation EWM00830 ECM00110 WARNING CAUTION: Improper mounting of the outboard mo- Incorrect engine height or obstructions tor could result in hazardous conditions to smooth water flow (such as the design such as poor handling, loss of control, or or condition of the boat, or accessories fire hazards.
Other- termine the optimum mounting height. wise the engine could be completely lost Consult your Yamaha dealer or boat man- if it accidentally falls off the transom. ufacturer for further information on deter- mining the proper mounting height.
Check fuel line connections to be sure they ECM00800 CAUTION: are tight (if equipped Yamaha fuel tank or Failure to follow the break-in procedure boat tank). could result in reduced engine life or Be sure the fuel tank is positioned on a se- even severe engine damage.
Operation er operation before starting the engine. EMU27441 Filling fuel The controls should work smoothly, with- EWM00060 out binding or unusual free play. WARNING Look for loose or damaged connections. Gasoline and its vapors are highly flam- Check operation of the starter and stop mable and explosive.
Operation orless, odorless gas which could cause brain damage or death when inhaled. Symptoms include nausea, dizziness, and drowsiness. Keep cockpit and cab- in areas well ventilated. Avoid blocking exhaust outlets. If there is an air vent screw on the fuel tank cap, loosen it 2 or 3 turns.
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Operation gine 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. ZMU01988 ZMU02026 Place the throttle grip in the “ ”...
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Operation repeat the procedure. If the engine fails to NOTE: start after 4 or 5 tries, open the throttle a It is not necessary to use the choke when small amount (between 1/8 and 1/4) and starting a warm engine. try again.
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Operation gine 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. ZMU02355 NOTE: It is not necessary to use the choke when starting a warm engine.
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Operation motor is turned continuously for more the other end of the lanyard into the en- than 5 seconds, the battery will be gine stop switch. quickly discharged, thus making it im- EWM00120 WARNING possible to start the engine. The starter Attach the engine stop switch lanyard can also be damaged.
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Operation using the neutral throttle lever or free ac- NOTE: celerator. You may need to change the It is not necessary to use the choke when throttle opening slightly depending on starting a warm engine. engine temperature. After the engine Push in the main switch fully, or the remote starts, return the throttle to the original choke system will not operate.
Check the oil ECM00220 level and add oil if necessary. Consult CAUTION: your Yamaha dealer if the cause for the To change the boat direction or shifting low oil pressure warning indicator can- position from forward to reverse or vice- not be found.
Operation firmly from neutral to forward. EMU27795 Reverse (manual tilt and hydro tilt models) EWM00190 WARNING When operating in reverse, go slowly. Do not open the throttle more than half. Oth- erwise the boat could become unstable, which could result in loss of control and an accident.
Operation ZMU02038 EMU27820 Stopping engine Before stopping the engine, first let it cool off for a few minutes at idle or low speed. Stop- ping the engine immediately after operating at high speed is not recommended. EMU27844 Procedure Push and hold the engine stop button or turn the main switch to “...
Operation the fuel line if there is a fuel joint on the also affected by variables such as the load in outboard motor. the boat, sea conditions, and running speed. EWM00740 WARNING Excessive trim for the operating condi- tions (either trim up or trim down) can cause boat instability and can make steering the boat more difficult.
Operation Remove the trim rod from the clamp EMU27901 Adjusting trim angle (power tilt bracket while slightly tilting the outboard models) motor up. EWM00750 WARNING Be sure all people are clear of the out- board motor when adjusting the tilt an- gle, also be careful not to pinch any body parts between the drive unit and clamp bracket.
Operation formance further, and the boat may “por- NOTE: poise” (hop in the water), which could throw Stay within the trim operating angle when the operator and passengers overboard. trimming the outboard motor using the power tilt system. To raise the bow (“trim-out”), tilt the engine To lower the bow (“trim-in”), tilt the engine down.
Operation board motor should be tilted up to protect the propeller and casing from damage by colli- sion with obstructions, and also to reduce salt corrosion. EWM00220 WARNING Be sure all people are clear of the out- board motor when tilting up and down, also be careful not to pinch any body ZMU01988 parts between the drive unit and engine...
Operation ZMU02044 Disconnect the fuel line from the out- Pull up the shallow water lever (if board motor or close the fuel cock. equipped). Hold the rear of the top cowling with one hand and tilt the engine up fully. Push the tilt support knob into the clamp bracket.
Operation from marine growth and corrosion which could damage the power trim and tilt mechanism. EMU30190 Procedure for tilting down (manual tilt models) Place the tilt lock lever in the lock posi- tion. ZMU02823 Push the tilt support knob into the clamp bracket or pull the tilt support lever to- ward you to support the engine.
Operation Push the power tilt / power trim and tilt the water, resulting in loss of control. switch “ ” (down) to lower the outboard Do not rotate the outboard motor 180° motor to the desired position. and operate the boat in reverse. Place the gear shift in reverse to operate the boat in reverse.
Operation ZMU02044 Slightly tilt the outboard motor up. The tilt support bar will lock automatically, supporting the outboard motor in a par- tially raised position. NOTE: This outboard motor has 2 positions for shal- low water cruising. To return the outboard motor to the nor- mal running position, place the gear shift ZMU01988 lever in neutral, then place the tilt lock le-...
/ tilt switch. For cooling system flushing instructions, see page 45. 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 (mud- dy) water conditions.
Engine oil drain bolt: sition using a motor support device such as 28.0 Nm (20.7 ft-lb) (2.86 kgf-m) a transom saver bar. Consult your Yamaha Engine oil filter: dealer for further details. 18.0 Nm (13.3 ft-lb) (1.84 kgf-m)
EMU28241 Storing outboard motor Wash the outboard motor body using When storing your Yamaha outboard motor fresh water. For further information, see for prolonged periods of time (2 months or page 49. longer), several important procedures must Disconnect the fuel line from the motor be performed to prevent excessive damage.
Keep hands, hair, and clothes away Seal replacement should be performed from the flywheel and other rotating by an authorized Yamaha dealer prior to parts while the engine is running. use. Grease all grease fittings. For further de- Run the engine at a fast idle for a few tails, see page 52.
Maintenance poisonous and highly caustic. tilled water. Always follow these preventive mea- Store the battery on a level surface in a sures: cool, dry, well-ventilated place out of di- Avoid bodily contact with electrolytic rect sunlight. fluid as it can cause severe burns or Once a month, check the specific gravity permanent eye injury.
If you or the owner is not famil- ting after flushing the engine. iar with machine servicing, this work should be done by your Yamaha dealer or NOTE: other qualified mechanic. When flushing the engine with the boat in...
Refer to the sections in this chapter for explanations of each owner-specific action. 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 50 hours Item...
Maintenance Initial Every 50 hours Item Actions 10 hours hours (6 hours (1 (1 month) months) months) year) Cleaning / adjustment / Spark plug(s) replacement Inspection / replace- Timing belt ment Valve clearance (OHC, Inspection / adjustment OHV) NOTE: When operating in salt water, turbid or muddy water, the engine should be flushed with clean water after each use.
Wipe off Instead, take the outboard motor to a any dirt from the threads and screw in the Yamaha dealer. You should periodically re- spark plug to the correct torque. move and inspect the spark plug because...
Check the fuel lines for leaks, crack, or mal- There will be fuel in the fuel filter. Keep function. If a problem is found, your Yamaha away from sparks, cigarettes, flames or dealer or other qualified mechanic should re- other sources of ignition.
The boat necessary. If any water is found in the could unexpectedly start to move, fuel, the Yamaha portable fuel tank or which could result in an accident. other fuel tanks should be checked and ECM00490 cleaned.
Maintenance EMU29073 Changing engine oil EWM00760 WARNING Avoid draining the engine oil immedi- ately after stopping the engine. The oil is hot and should be handled with care to avoid burns. Be sure the outboard motor is securely ZMU02049 fastened to the transom or a stable stand.
Con- tinued operation with a problem could cause severe engine damage. Consult your Yamaha dealer if the problem can- not be located and corrected. ZMU02087 Turn off the engine and wait 3 minutes.
Engine oil leakage smoothly. Check for oil leaks on the around the engine. NOTE: NOTE: Consult your Yamaha dealer if any operation If any leaks are found, consult your Yamaha is abnormal. dealer. EMU29171 EMU29161 Checking propeller Checking power trim and tilt system...
Maintenance 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.
Apply Yamaha marine grease or a cor- Apply Yamaha marine grease or a cor- rosion resistant grease to the propeller rosion resistant grease to the propeller shaft.
Severe injury could NOTE: occur if the outboard motor accidental- For disposal of used oil consult your Yamaha ly falls. dealer. Tilt the outboard motor so that the gear With the outboard motor in a vertical po-...
If you have any question about properly F15AE 250.0 cm (8.45 US oz) doing this procedure, consult your (8.82 Imp.oz) Yamaha dealer. F15AEH 250.0 cm (8.45 US oz) Keep away from sparks, cigarettes, (8.82 Imp.oz) flames, or other sources of ignition F15AEP 250.0 cm...
EMU29312 Inspecting and replacing anode(s) Yamaha outboard motors are protected from ZMU02924 corrosion by sacrificial anodes. Inspect the external anodes periodically. Remove scales from the surfaces of the anodes. Consult a Yamaha dealer for replacement of external anodes.
NOTE: DO NOT SMOKE when charging or han- Consult a Yamaha dealer when charging or dling batteries. re-charging batteries. KEEP BATTERIES AND ELECTROLYTIC EMU29331 FLUID OUT OF REACH OF CHILDREN.
ATIVE (-) terminal first. Then disconnect the ZMU01943 RED cable from the POSITIVE (+) terminal. EMU29390 Checking top cowling Check the fitting of the top cowling by push- ing it with both hands. If it is loose have it re- paired by your Yamaha dealer.
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 warning indicator is Q. Are spark plug(s) fouled or of incorrect flashing, 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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Trouble Recovery A. Have serviced by a Yamaha dealer. Q. Are weeds or other foreign matter tangled on gear housing? Q. Is load on boat improperly distributed? A. Remove foreign matter and clean lower A. Distribute load to place boat on an even unit.
Make sure the remote control lever is in neutral. Otherwise the boat could NOTE: unexpectedly start to move, which Consult your Yamaha dealer if the new fuse could result in an accident. immediately blows again. Attach the engine stop switch lanyard...
Trouble Recovery starter mechanism or top cowling after the engine is running. Do not touch the ignition coil, spark plug wire, spark plug cap, or other elec- trical components when starting or op- erating the motor. You could get an electrical shock.
EMU29760 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. If you cannot immediately take the outboard motor to a Yamaha dealer, follow the proce- dure below in order to minimize engine dam- age.
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YAMAHA MOTOR CO., LTD. Printed in Japan March 2004–0.9 × 1 ! Printed on recycled paper...