Yamaha F6C Owner's Manual
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F2.5A
F4B
F5A
F6C
OWNER'S MANUAL
Read this manual carefully before operating this
outboard motor.
6BV-F8199-23-E0

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Summary of Contents for Yamaha F6C

  • Page 1 F2.5A OWNER’S MANUAL Read this manual carefully before operating this outboard motor. 6BV-F8199-23-E0...
  • Page 2 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.
  • Page 3: Important Manual Information

    If there is any To the owner question concerning this manual, please con- Thank you for selecting a Yamaha outboard sult your Yamaha dealer. motor. This Owner’s Manual contains infor- To ensure long product life, Yamaha recom-...
  • Page 4: Table Of Contents

    Tilt lock mechanism requirements........12 (F4B, F5A, F6C)......28 Specifications ........ 12 Tilt support bar (F4B, F5A, F6C) ..29 Tilt support lever (F2.5A) ....29 Installation requirements ....14 Cowling lock lever ......29 Boat horsepower rating ....14 Carrying handle ........
  • Page 5 Tilting up and down ....... 62 Starter will not operate ..... 95 Procedure for tilting up ..... 62 Emergency engine starting....95 Procedure for tilting down....67 Treatment of submerged Shallow water (F4B, F5A, F6C) ..68 motor........100 Cruising in shallow water....68...
  • Page 6: Safety Information

    Safety information EMU33622 running away under power and leaving peo- Outboard motor safety ple stranded, or running over people or ob- Observe these precautions at all times. jects. EMU36501 Always attach the engine shut-off cord to a Propeller secure place on your clothing or your arm or People can be injured or killed if they come in leg while operating.
  • Page 7: Modifications

    Have an approved personal flotation device distribution can compromise the boats han- (PFD) on board for every occupant. Yamaha dling and lead to an accident, capsizing or recommends that you must wear a PFD swamping. whenever boating. At a minimum, children...
  • Page 8: Weather

    Safety information Avoid sharp turns or other maneuvers that make it hard for others to avoid you or un- derstand where you are going. Avoid areas with submerged objects or shallow water. Ride within your limits and avoid aggressive maneuvers to reduce the risk of loss of con- trol, ejection, and collision.
  • Page 9: General Information

    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. EMU37291 EC Declaration of Conformity F2.5A...
  • Page 10: C-Tick Label

    General information ZMU01697 ZMU06304 EMU25214 C-Tick label Engines affixed with this label conform to cer- tain portion(s) of the Australian Radio Com- munications Act. F2.5A 1. C-Tick label location F4B, F5A, F6C ZMU06712 1. C-Tick label location...
  • Page 11: Read Manuals And Labels

    Read any manuals supplied with the boat. Read all labels on the outboard motor and the boat. If you need any additional information, contact your Yamaha dealer. EMU33832 Warning labels If these labels are damaged or missing, contact your Yamaha dealer for replacements. F2.5A...
  • Page 12 General information ZMU05810 EMU33922 Contents of labels EWM01711 The above warning labels mean as follows. WARNING Read Owner’s Manuals and labels. EWM01701 Wear an approved personal flotation de- WARNING vice (PFD). Gasoline is highly flammable and explo- Ensure shift control is in neutral before sive.
  • Page 13 General information EMU35132 Electrical hazard Symbols The following symbols mean as follows. Notice/Warning ZMU05666 ZMU05696 Read Owner’s Manual ZMU05664 Hazard caused by continuous rotation ZMU05665...
  • Page 14: Warning Labels

    General information EMU42710 Warning labels If these labels are damaged or missing, contact your Yamaha dealer for replacements. F4B, F5A, F6C ZMU06795...
  • Page 15 General information ZMU07405 EMU42760 Contents of labels EWM01671 The above warning labels mean as follows. WARNING Read Owner’s Manuals and labels. EWM01691 Wear an approved personal flotation de- WARNING vice (PFD). Emergency starting does not have start- Attach engine shut-off cord (lanyard) to in-gear protection.
  • Page 16 General information Hazard caused by continuous rotation EWM01701 WARNING Gasoline is highly flammable and explo- sive. Shut off engine before refueling. Tighten tank cap and air vent screw when not in use. EMU42750 Symbols The following symbols mean as follows. ZMU05665 Notice/Warning Electrical hazard...
  • Page 17: Specifications And Requirements

    Specifications and requirements EMU38091 Weight (AL) L: Specifications F4BMH 28.0 kg (62 lb) TIP: F5AMH 28.0 kg (62 lb) “(AL)” stated in the specification data below F6CMH 28.0 kg (62 lb) represents the numerical value for the alumi- Performance: num propeller installed. Full throttle operating range: EMU2821K F2.5AMH 5250–5750 r/min...
  • Page 18 Specifications and requirements Ignition system: Fuel tank capacity: F2.5AMH TCI F4BMH 12.0 L (3.17 US gal, F4BMH CDI 2.64 Imp.gal) F5AMH CDI F5AMH 12.0 L (3.17 US gal, F6CMH CDI 2.64 Imp.gal) Spark plug (NGK): F6CMH 12.0 L (3.17 US gal, F2.5AMH BR6HS 2.64 Imp.gal) F4BMH CR6HSB...
  • Page 19: Installation Requirements

    WARNING propriate. Improper mounting of the outboard mo- Your Yamaha dealer can help you select the tor could result in hazardous conditions right propeller for your boating needs. Select such as poor handling, loss of control, a propeller that will allow the engine to reach or fire hazards.
  • Page 20: Start-In-Gear Protection (F4B, F5A, F6C)

    F5A, F6C) pitch propeller for a heavier load. If you carry Yamaha outboard motors are equipped with loads that vary widely, select the propeller that start-in-gear protection device. This feature lets the engine run in the proper range for your...
  • Page 21: Fuel Requirements

    Recommended engine oil grade 2 nol blends containing more than 10% ethanol can cause fuel system damage or cause en- 122˚F gine starting and running problems. Yamaha 50˚C does not recommend gasohol containing 15W–40 methanol because it can cause fuel system damage or engine performance problems.
  • Page 22: Emergency Equipment

    Waterproof flashlight with extra batteries. An extra engine shut-off cord (lanyard) with clip. ZMU07604 Spare parts, such as an extra set of spark plugs. Consult your Yamaha dealer for details. EMU25222 Emission control information (F4B, F5A, F6C) EMU25310 U.S. insular areas Engines affixed with the label pictured below conform to U.S.
  • Page 23: Components

    Components EMU2579Y Components diagram TIP: * May not be exactly as shown; also may not be included as standard equipment on all models (order from dealer). F2.5A 1. Top cowling 16.Clamp screw 2. Cowling lock lever(s) 17.Restraint cable attachment 3. Carrying handle 18.Gear shift lever 4.
  • Page 24: Fuel Tank (Built-In Fuel Tank)

    Components F4B, F5A, F6C 21 19 ZMU06715 1. Top cowling 22.Clamp screw 2. Cowling lock lever 23.Restraint cable attachment 3. Carrying handle 24.Tilt support bar 4. Anti-cavitation plate 25.Gear shift lever 5. Propeller* EMU39543 Fuel tank (built-in fuel tank) 6. Cooling water inlet This outboard motor is equipped with a built- 7.
  • Page 25: Fuel Tank (Portable Fuel Tank) (F4B, F5A, F6C)

    ZMU07499 ZMU07357 1. Fuel joint 1. Air vent screw 2. Fuel tank cap È 3. Built-in fuel tank F4B, F5A, F6C ZMU07500 1. Air vent screw 2. Fuel gauge 3. Fuel joint ZMU06717 4. Fuel tank cap 1. Air vent screw The parts of the fuel tank are as follows.
  • Page 26: Fuel Cock

    Components Fuel joint 2. Fuel gauge This joint is used to connect the fuel line. 3. Pressure relief tab Fuel gauge 4. Fuel tank cap This gauge is located on either the fuel tank 5. Air vent screw cap or on the fuel joint base. It shows the ap- The parts of the fuel tank are as follows.
  • Page 27 Components 1. Fuel cock 1. Close position F4B, F5A, F6C F4B, F5A, F6C The fuel cock turns on and off the supply of To stop the fuel flow from the fuel tank to the fuel from the fuel tank to the engine.
  • Page 28: Tiller Handle

    F2.5A ZMU07358 1. Open position 1. Tiller handle F4B, F5A, F6C F4B, F5A, F6C To send fuel from the fuel tank to the carbure- tor, align the fuel cock with the position for the built-in fuel tank or portable fuel tank accord- ing to which fuel tank is being used.
  • Page 29: Throttle Grip

    Components F4B, F5A, F6C F4B, F5A, F6C Move the gear shift lever forward to engage the forward gear or rearward to engage the reverse gear. ZMU07360 1. Throttle grip EMU39711 Throttle indicator ZMU06864 The throttle indicator shows the throttle posi- 1.
  • Page 30: Throttle Friction Adjuster

    Components F4B, F5A, F6C ZMU06808 ZMU06724 1. Start mark “ ” 1. Throttle friction adjuster 2. Notch EMU25995 EMU39243 Engine shut-off cord (lanyard) and Throttle friction adjuster clip The throttle friction adjuster provides adjust- The clip must be attached to the engine shut- able resistance when the throttle grip is off switch for the engine to run.
  • Page 31: Engine Stop Button

    Components F2.5A F2.5A ZMU07362 1. Clip 1. Engine stop button 2. Cord F4B, F5A, F6C 3. Engine shut-off switch F4B, F5A, F6C ZMU06726 1. Engine stop button ZMU06725 EMU26013 Choke knob for pull type 1. Engine shut-off switch To supply the engine with the rich fuel mixture 2.
  • Page 32: Fuel Joint Cap (F4B, F5A, F6C)

    1. Choke knob 1. Manual starter handle EMU39723 F4B, F5A, F6C Fuel joint cap (F4B, F5A, F6C) The fuel joint is equipped with the fuel joint cap. WARNING! When not using a portable fuel tank, make sure to install the fuel joint cap.
  • Page 33: Trim Rod (Tilt Pin)

    1. Steering friction adjuster 1. Trim rod To increase resistance, turn the steering fric- EMU39363 Tilt lock mechanism (F4B, F5A, F6C) tion adjuster clockwise. The tilt lock mechanism is used to prevent the To decrease resistance, turn the steering fric- outboard motor from lifting out of the water tion adjuster counterclockwise.
  • Page 34: Tilt Support Bar (F4B, F5A, F6C)

    When the gear shift lever is moved to the neu- tral position or forward position, the outboard motor can be tilted up. EMU39832 Tilt support bar (F4B, F5A, F6C) ECM00660 Use the tilt support bar to keep the outboard NOTICE...
  • Page 35: Carrying Handle

    Components F2.5A ZMU07369 ZMU07367 1. Carrying handle 1. Cowling lock lever F4B, F5A, F6C F2.5A The carrying handle is used to carry the out- board motor. For information on carrying and transporting the outboard motor, see page 70. ZMU07368 1. Cowling lock lever...
  • Page 36: Installation

    WARNING ZMU01760 Overpowering a boat could cause se- 1. Center line (keel line) vere instability. Do not mount an out- F4B, F5A, F6C board motor with more horsepower than EWM02300 the maximum rating on the capacity WARNING plate of the boat. If the boat does not...
  • Page 37 Installation Mount the outboard motor on the center line (keel line) of the boat, and ensure that the boat itself is well balanced. Oth- erwise the boat will be hard to steer. For boats without a keel or which are asym- metrical, consult your dealer.
  • Page 38: Clamping The Outboard Motor

    Test runs at different heights can help determine 0–25mm (0–1in) the optimum mounting height. Consult your Yamaha dealer or boat manufacturer for further information on determining the prop- ZMU07370 er mounting height. 1. Idle hole For instructions on setting the trim angle of 2.
  • Page 39 Otherwise the engine could be completely lost if it accidentally falls off the transom. F2.5A ZMU07509 1. Restraint cable attachment F4B, F5A, F6C ZMU06812 1. Restraint cable attachment...
  • Page 40: Operation

    Operation EMU36381 For the first hour of operation: First-time operation Run the engine at varying speeds up to EMU36391 2000 r/min or approximately half throttle. Fill engine oil For the second hour of operation: The engine is shipped from the factory without Run the engine at 3000 r/min or at ap- engine oil.
  • Page 41: Remove The Top Cowling

    Turn the throttle grip from the fully closed to 1. Cowling lock lever the fully open position. Make sure that it F4B, F5A, F6C turns smoothly and that it completely re- turns to the fully closed position. Look for loose or damaged connections of the throttle and shift cables.
  • Page 42: Engine Shut-Off Cord (Lanyard)

    Operation Check the throttle cable and throttle link for loose or damaged connections. ZMU06873 1. Clip 2. Cord ZMU06851 EMU42860 Engine oil F2.5A Put the outboard motor in an upright po- sition (not tilted). Remove the top cowling. Check the oil level using the oil level check window to be sure the level falls between the upper and lower marks.
  • Page 43: Engine

    Operation F4B, F5A, F6C Place the outboard motor in an upright position (not tilted). NOTICE: If the mo- tor is not level, the oil level indicated on the dipstick may not be accurate. [ECM01790] Remove the oil filler cap and wipe the at- tached oil dipstick clean.
  • Page 44 Pull the cowling lock lever down to secure the top cowling. F4B, F5A, F6C Check the rubber seal for damage. If the rubber seal is damaged, have it replaced by a Yamaha dealer.
  • Page 45: Filling Fuel

    Operation Gasoline is poisonous and can cause in- jury or death. Handle gasoline with care. Never siphon gasoline by mouth. If you should swallow some gasoline or inhale a lot of gasoline vapor, or get some gas- oline in your eyes, see your doctor im- mediately.
  • Page 46 GASOLINE container. Filling fuel for portable fuel tank (optional) (F4B, F5A, F6C) When using the portable fuel tank “A”, fill the fuel tank according to the following procedure. È...
  • Page 47 GASOLINE container. Filling fuel for portable fuel tank (optional) (F4B, F5A, F6C) When using the portable fuel tank “B”, fill the fuel tank according to the following procedure. É...
  • Page 48 Operation While pressing and holding the pressure Fuel tank capacity: relief tab under the fuel tank cap, slowly 12.0 L (3.17 US gal, 2.64 Imp.gal) turn the fuel tank cap counterclockwise 1/4 turn. ZMU07461 ZMU07446 TIP: 1. Pressure relief tab Wipe up any spilled gasoline immediately 2.
  • Page 49: Operating Engine

    Gaso- Sending fuel for built-in fuel tank (F4B, F5A, line is highly flammable, and its vapors F6C) are flammable and explosive. Refrain Loosen the air vent screw by 1 or 2 turns. from smoking, and keep away from open flames and sparks while loosening the air vent screw.
  • Page 50 Install the top cowling. the tank due to fuel expansion. Sending fuel for portable fuel tank (optional) (F4B, F5A, F6C) When using the portable fuel tank “A”, send fuel to the outboard motor according to the fol- lowing procedure.
  • Page 51 ZMU06743 1. Fuel hose 2. Fuel joint cap 1. Arrow Sending fuel for portable fuel tank (optional) (F4B, F5A, F6C) When using the portable fuel tank “B”, send fuel to the outboard motor according to the fol- lowing procedure. É...
  • Page 52 Operation Check the direction of the fuel hose. Make sure that the arrow of the primer pump points toward the outboard motor. ZMU07445 1. Air vent screw If there is fuel in the built-in fuel tank, loos- ZMU07452 en the air vent screw by 1 or 2 turns to 1.
  • Page 53 Operation ZMU07454 ZMU07456 1. Fuel hose 1. Fuel hose Align the groove in the fuel joint on the Wipe up any spilled gasoline immediately fuel tank with the protrusions on the fuel with dry rags. hose. TIP: Dispose of rags properly according to local laws or regulations.
  • Page 54: Starting Engine

    Operation Procedure for starting outboard motor (F2.5A) Place the gear shift lever in neutral. WARNING! Always start the engine in neutral to avoid accidentally moving the boat. [EWM00111] 1. Arrow 2. Primer pump EMU27494 Starting engine EWM01600 WARNING If the engine shut-off cord is equipped, at- Before starting the engine, make sure that tach it to a secure place on your clothing, the boat is tightly moored and that you can...
  • Page 55 If the choke knob is left in the “ ” (start) Procedure for starting outboard motor (F4B, position while the engine is running, the en- F5A, F6C) gine will run poorly or stall. Move the gear shift lever to the neutral Pull the manual starter handle slowly until position.
  • Page 56 Operation TIP: If the ambient temperature is -15°C or less, turn the throttle grip so that the engine start mark “ ” is positioned past the notch in the tiller handle. ZMU06749 1. Neutral position Attach the engine shut-off cord to a se- cure place on your clothing, or your arm or leg.
  • Page 57: Checks After Starting Engine

    Stop the engine and check whether the cooling water inlet on the lower case or the cooling water pilot hole is blocked. Consult your Yamaha dealer if the prob- ZMU06746 lem cannot be located and corrected. After the engine starts, slowly return the F2.5A...
  • Page 58: Checks After Engine Warm Up

    Operation or less. After the engine has warmed up, push ECM02220 NOTICE the choke knob in fully. Failure to do so will Before shifting the outboard motor, turn shorten engine life. the throttle grip to the fully closed position TIP: and let the engine speed return to idle If the choke knob is left pulled out after the speed.
  • Page 59: Stopping Boat (F2.5A)

    The stopping distance varies depending on gross weight, water surface conditions, and wind direction. F4B, F5A, F6C To shift to forward or reverse Move the gear shift lever to the forward posi- tion or reverse position.
  • Page 60: Stopping Boat (F4B, F5A, F6C)

    Push and hold the engine stop button un- Procedure for stopping engine when using til the engine comes to a complete stop. built-in fuel tank (F4B, F5A, F6C) Push and hold the engine stop button un- til the engine stops completely. The en-...
  • Page 61 ZMU06871 ZMU06726 1. Engine stop button 1. Closed position Procedure for stopping engine when using optional portable fuel tank (F4B, F5A, F6C) When using the portable fuel tank “A”, stop the engine according to the following proce- dure. È ZMU06867 1.
  • Page 62 Operation ZMU06726 1. Engine stop button 1. Air vent screw Align the fuel cock with the closed posi- tion. ZMU06867 1. Engine shut-off switch 2. Cord ZMU06871 3. Clip 1. Closed position Tighten the air vent screw on the fuel tank Disconnect the fuel hose, and then install cap.
  • Page 63 Operation 2. Fuel joint cap Procedure for stopping engine when using optional portable fuel tank (F4B, F5A, F6C) When using the portable fuel tank “B”, stop the engine according to the following proce- dure. É ZMU07473 1. Engine shut-off switch 2.
  • Page 64: Trimming Outboard Motor

    Operation ZMU07444 ZMU07459 1. Air vent screw 1. Fuel joint cap Align the fuel cock with the closed posi- Disconnect the fuel hose from the fuel tion. joint on the fuel tank by turning it counter- clockwise. ZMU06871 ZMU07443 1. Closed position 1.
  • Page 65: Adjusting Trim Angle For Manual Tilt Models

    Operation F2.5A F4B, F5A, F6C ZMU06754 1. Trim operating angle 1. Trim operating angle EMU42830 Adjusting trim angle for manual tilt models EWM00400 WARNING Stop the engine before adjusting the trim angle. Use care to avoid being pinched when removing or installing the rod.
  • Page 66: Adjusting Boat Trim

    If this occurs, adjust the trim angle. ZMU07372 1. Trim rod F4B, F5A, F6C Bow Up Too much trim-out puts the bow of the boat too high in the water. Excessive trim-out can...
  • Page 67: Tilting Up And Down

    Operation EWM00230 WARNING Leaking fuel is a fire hazard. Tighten the air vent screw and place the fuel cock in the closed position if the outboard motor will be tilted for more than a few minutes. Otherwise fuel may leak. ECM00231 NOTICE Before tilting the outboard motor, follow...
  • Page 68 If the tilt support lever does not automatically lock, swing the motor a little to the left and right. Procedure for tilting up when using built-in fuel tank (F4B, F5A, F6C) Align the fuel cock with the closed posi- tion. Close the fuel cock.
  • Page 69 Operation Procedure for tilting up when using optional portable fuel tank (F4B, F5A, F6C) When using the portable fuel tank “A”, tilt the outboard motor up according to the following procedure. È ZMU06827 1. Steering friction adjuster Tighten the air vent screw.
  • Page 70 Procedure for tilting up when using optional fuel joint accidentally. [EWM02411] portable fuel tank (F4B, F5A, F6C) When using the portable fuel tank “B”, tilt the outboard motor up according to the following procedure.
  • Page 71 Operation É ZMU07506 ZMU06827 1. Steering friction adjuster Align the fuel cock with the closed posi- tion. Tighten the air vent screw. ZMU06871 ZMU06751 1. Air vent screw 1. Closed position Disconnect the fuel hose from the fuel Move the gear shift lever to the neutral joint on the outboard motor by turning it position.
  • Page 72: Procedure For Tilting Down

    [EWM00721] F4B, F5A, F6C Slightly tilt the outboard motor up. Slowly tilt the outboard motor down while pulling the tilt support bar up. ZMU06829 1.
  • Page 73: Shallow Water (F4B, F5A, F6C)

    ZMU06819 ZMU06834 1. Cooling water inlet 1. Steering friction adjuster EMU39583 EMU28062 Procedure for shallow water cruising Shallow water (F4B, F5A, F6C) Move the gear shift lever to the neutral EMU39891 Cruising in shallow water position. EWM02391 WARNING Operate the boat at the lowest possible speed when cruising in shallow water.
  • Page 74: Cruising In Other Conditions

    Also rinse the outside of the outboard motor with fresh wa- ter. Cruising in muddy, turbid, or acidic water Yamaha strongly recommends that you use ZMU06760 the optional chromium-plated water pump kit 1. Shallow water cruising position (see page 16) if you use the outboard motor in 2.
  • Page 75: Maintenance

    Consult your Yamaha dealer for further details. ECM02440 EMU42901...
  • Page 76 Maintenance TIP: Place a towel or something similar under the outboard motor to protect it from damage. F4B, F5A, F6C EWM02300 WARNING Do not hold the top cowling or tiller handle when mounting or dismounting the out- board motor. Otherwise, the outboard mo- tor could fall.
  • Page 77 Maintenance When using a portable fuel tank, discon- nect the fuel hose from the fuel joint, and then install the fuel joint cap. WARNING! When not using a portable fuel tank, make sure to install the fuel joint cap. Otherwise, injury could result from striking the fuel joint accidentally.
  • Page 78: Storing Outboard Motor

    90° so that it does not con- It is advisable to have your outboard motor tact the ground, and then turn the steer- serviced by an authorized Yamaha dealer pri- ing friction adjuster clockwise to secure or to storage. However, the following proce- the bracket.
  • Page 79: Procedure

    Maintenance ECM02551 Install the outboard motor on the test NOTICE tank. Do not place the outboard motor on its side before the cooling water has drained from it completely. Otherwise, water may enter the cylinder through the exhaust valve and cause engine trouble. Transport and store the outboard motor as specified in “Transporting/Dismount- ing the outboard motor”.
  • Page 80 For draining of the built-in fuel tank, con- sult a Yamaha dealer. When using a portable fuel tank, discon- nect the fuel hose, install the fuel joint cap, and then align the fuel cock with the closed position.
  • Page 81 90. away from the flywheel and other ro- EMU39624 Flushing with the water flush plug (option- tating parts while the engine is run- al) (F4B, F5A, F6C) ning. [EWM00091] ECM00301 10. Before the engine stops, quickly spray NOTICE “Fogging Oil”...
  • Page 82 For draining of the built-in fuel tank, con- sult a Yamaha dealer. When using a portable fuel tank, discon- nect the fuel hose, install the fuel joint cap, and then align the fuel cock with the closed position.
  • Page 83: Lubrication

    Maintenance TIP: For long-term storage, fogging the engine with oil is recommended. Contact your Yamaha dealer for information about fogging oil and procedures for your engine. EMU28452 Cleaning the outboard motor After use, wash the exterior of the outboard motor with fresh water. Flush the cooling sys- tem with fresh water.
  • Page 84: Replacement Parts

    EMU28511 Replacement parts If replacement parts are necessary, use only genuine Yamaha parts or parts of equivalent design and quality. Any part of inferior quality may malfunction, and the resulting loss of control could endanger the operator and pas- sengers.
  • Page 85: Maintenance Chart 1

    When operating in salt water, muddy, other turbid (cloudy), acidic water, the engine should be flushed with clean water after each use. 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 Item Actions...
  • Page 86 Stop switch ment as necessary Connector connec- Inspection or replace- tions/lead connections ment as necessary Fuel tank (optional Inspection and clean- Yamaha portable fuel ing as necessary tank) (F4B, F5A, F6C) Inspection and clean- Fuel tank (built-in tank) ing as necessary...
  • Page 87: Maintenance Chart 2

    Maintenance EMU34451 Maintenance chart 2 Every Item Actions 1000 hours Exhaust guide/exhaust Inspection or replace- manifold ment as necessary EMU28943 Greasing Yamaha grease A (water resistant grease) Yamaha grease D (corrosion resistant grease; for propeller shaft) F2.5A...
  • Page 88 Maintenance F4B, F5A, F6C ZMU06764...
  • Page 89: Cleaning And Adjusting Spark Plug

    Instead, take the outboard sion or fire. [EWM00561] motor to a Yamaha dealer. You should peri- odically remove and inspect the spark plug Standard spark plug: F2.5AMH BR6HS because heat and deposits will cause the F4BMH CR6HSB spark plug to slowly break down and erode.
  • Page 90: Checking Fuel Filter (F2.5A)

    WARNING tenance chart, consult a Yamaha dealer. Be sure the outboard motor is securely EMU39921 Checking fuel filter (F4B, F5A, F6C) fastened to the transom or a stable stand. The fuel filters are located in the filler hole of ECM01710 the built-in fuel tank and in the bottom cowling.
  • Page 91 Drain screw tightening torque: operation with a problem could cause 18.0 Nm (1.84 kgf-m, 13.3 ft-lb) severe engine damage. Consult your Yamaha dealer if the problem cannot TIP: be located and corrected. [ECM00682] If a torque wrench is not available when you Turn off the engine and wait 3 minutes.
  • Page 92 Remove the top cowling. Remove the oil filler cap. TIP: 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. F4B, F5A, F6C...
  • Page 93 NOTICE: If there are oil leaks, stop the engine and find the Add the correct amount of oil through the cause. Consult your Yamaha dealer if filler hole. NOTICE: Overfilling the oil the problem cannot be located and tank could cause leakage or damage.
  • Page 94: Checking Connector And Lead

    16. Dispose of used oil according to local regulations. TIP: 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. 17. Install the top cowling.
  • Page 95: Installing Propeller

    You could be severely injured if the out- board motor falls on you. Apply Yamaha grease D (corrosion resis- tant grease) into the propeller shaft. Put the outboard motor in an upright po- Install the thrust washer and propeller sition (not tilted).
  • Page 96 [ECM00713] level plug hole, insert and tighten the oil TIP: level plug. For disposal of used oil, consult your Yamaha dealer. Tightening torque: 9.0 Nm (0.92 kgf-m, 6.6 ft-lb) Using a flexible or pressurized filling de- vice, inject the gear oil into the gear oil...
  • Page 97: Inspecting And Replacing Anode (External)

    Inspect the ex- 1. Anode ternal anode periodically. Remove scales from the surface of the anode. Consult a Yamaha dealer for replacement of the exter- nal anode. ECM00720 NOTICE Do not paint anodes, as this would render them ineffective.
  • Page 98: Trouble Recovery

    This section describes the likely causes and Q. Are engine inner parts damaged? remedies for problems, such as those in the A. Have serviced by a Yamaha dealer. fuel, compression, and ignition systems, poor starting, and loss of power. Please note that Engine idles irregularly or stalls.
  • Page 99 A. Check for pinched or kinked fuel line or oth- Q. Is carburetor clogged? er obstructions in fuel system. A. Have serviced by a Yamaha dealer. Q. Is fuel filter clogged? Q. Is fuel joint connection incorrect? A. Clean or replace filter.
  • Page 100: Temporary Action In Emergency

    Whether damage is found or not, return to the nearest harbor slowly and careful- Engine vibrates excessively. Q. Is propeller damaged? Have a Yamaha dealer check the out- A. Have propeller repaired or replaced. board motor before operating it again. EMU43680 Starter will not operate Q.
  • Page 101 Trouble Recovery An unguarded, rotating flywheel is very dangerous. Keep loose clothing and other objects away when starting the en- gine. Use the emergency starter rope only as instructed. Do not touch the fly- wheel or other moving parts when the engine is running.
  • Page 102 Repeat if neces- Install 2 bolts into the rear section of the sary. fuel tank. F4B, F5A, F6C 10. Prepare the engine for starting; see page EWM02361 WARNING 49. Be sure the engine is in neutral and...
  • Page 103 Trouble Recovery Avoid accidentally pulling the cord dur- Move the gear shift lever to the neutral ing normal operation. Loss of engine position. 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.
  • Page 104 Trouble Recovery 2. Manual starter/flywheel magnet cover Reinstall 2 bolts to secure the fuel tank. ZMU06744 Align the engine start mark “ ” on the ZMU06783 throttle grip with the notch in the tiller han- dle. Insert the knotted end of the emergency starter rope into the notch in the flywheel magnet and wind the rope several turns around the flywheel magnet clockwise.
  • Page 105: Treatment Of Submerged Motor

    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 immediate- ly. NOTICE: Do not attempt to run the out- board motor until it has been completely inspected.
  • Page 106 Printed in France April 2011–0.3 × 1 CR...

This manual is also suitable for:

F5aF4bF2.5a

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