Yamaha F25G Owner's Manual
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Yamaha F25G Owner's Manual

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F25G
OWNER'S MANUAL
Read this manual carefully before operating this
outboard motor.
6FM-28199-75-E0

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  • Page 1 F25G OWNER’S MANUAL Read this manual carefully before operating this outboard motor. 6FM-28199-75-E0...
  • Page 2 EMU25053 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 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.

  • Page 4: Table Of Contents

    Table of contents Safety information......1 Battery requirements...... 14 Outboard motor safety ..... 1 Battery specifications ......14 To install the battery ......14 Propeller ..........1 Propeller selection ......14 Rotating parts ........1 Hot parts..........1 Start-in-gear protection ....15 Electric shock ........
  • Page 5 Table of contents Tilt lock mechanism......29 Starting engine ........46 Tilt support knob........ 29 Checks after starting engine ..51 Tilt support bar ........30 Cooling water ........51 Cowling lock lever ......30 Warming up engine......51 Flushing device ......... 30 Manual start and electric start Alert indicator ........
  • Page 6 Table of contents Flushing power unit ......70 Cleaning the outboard motor..... 71 Checking painted surface of outboard motor....... 71 Periodic maintenance..... 71 Replacement parts ......71 Severe operating conditions....72 Maintenance chart 1......73 Maintenance chart 2......75 Greasing..........76 Cleaning and adjusting spark plug ..

  • Page 7: Safety Information

    Safety information shock or electrocution. EMU33623 Outboard motor safety Observe these precautions at all times. EMU33662 Power trim and tilt Body parts can be crushed between the mo- EMU36502 Propeller tor and the clamp bracket when the motor is People can be injured or killed if they come trimmed or tilted.

  • Page 8: Gasoline

    Gasoline exposure and spills Have an approved PFD on board for every Take care not to spill gasoline. If gasoline occupant. Yamaha recommends that you spills, wipe it up immediately with dry rags. must wear a PFD whenever boating. At a Dispose of rags properly.

  • Page 9: Overloading

    Do not follow directly behind other boats or  found, return to the nearest harbor at low waterskiers. speed and have a Yamaha dealer inspect Avoid sharp turns or other maneuvers that  the outboard motor. make it hard for others to avoid you or un- derstand where you are going.

  • Page 10: Weather

    Safety information EMU33791 Weather Stay informed about the weather. Check weather forecasts before boating. Avoid boating in hazardous weather. EMU33881 Passenger training Make sure at least one other passenger is trained to operate the boat in the event of an emergency.

  • Page 11: 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. 1. Key number...

  • Page 12: Ce Marking

    General information EMU38995 CE Marking This label is affixed to outboard motors that conform to European regulations. Outboard motors affixed with this “CE” mark- conform with directives 2006/42/EC, 94/25/EC 2003/44/EC, 2014/30/EU, and 2004/108/EC, 2013/53/EU. ZMU06040 ZMU08714 1. CE marking location ZMU08715 1.

  • Page 13: Read Manuals And Labels

    Read all labels on the outboard motor and the boat.  If you need any additional information, contact your Yamaha dealer. EMU33836 Warning labels If these labels are damaged or missing, contact your Yamaha dealer for replacements. F25GE, F25GET ZMU08815...
  • Page 14 General information F25GMH, F25GWH ZMU08717...
  • Page 15 General information 6EE-H1994-40 6EE-H1995-40 6EE-H1994-50 6EE-H1995-50 6EE-G2794-40 6EE-G2794-50 ZMU05746 EMU33913 Contents of labels EWM01672 The above warning labels mean as follows. Read Owner’s Manuals and labels.  EWM01692 Wear an approved personal flotation  device (PFD). Emergency starting does not have start- Attach engine shut-off cord (lanyard) to ...

  • Page 16: Engine Data Recording

    General information Electrical hazard EMU33844 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 EMU48000 Engine data recording ZMU05665...
  • Page 17 Policy. Privacy Policy https://www.yamaha-motor.eu/eu/ privacy/privacy-policy.aspx Yamaha will not disclose this data to a third party except in the following cases. In addi- tion, Yamaha may provide engine data to a contractor in order to outsource services re- lated to the handling of the engine data.

  • Page 18: Specifications And Requirements

    Specifications and requirements Rated power: EMU38092 Specifications 18.4 kW (25 HP) TIP: Idle speed (in neutral): 850–950 r/min “(AL)” stated in the specification data below Power unit: represents the numerical value for the alumi- Type: num propeller installed. 4-stroke SOHC L2 4 valves Total displacement: EMU48360 432 cm...

  • Page 19: Installation Requirements

    Specifications and requirements Noise and vibration level: Gear ratio: 2.08 (27/13) Operator sound pressure level (ICOMIA Trim and tilt system: 39/94): Manual tilt (F25GE, F25GMH, 83.0 dB(A) F25GWH) Vibration on tiller handle (ICOMIA 38/94): Power trim and tilt (F25GET) 4.7 m/s Propeller mark: EMU33556 Installation requirements...

  • Page 20: Remote Control Requirements

    Specifications and requirements Battery cable EMU33582 Remote control requirements The battery cable size and length are critical. Consult your Yamaha dealer about the bat- EWM01581 tery cable size and length. If the engine starts in gear, the boat can ...

  • Page 21: Start-In-Gear Protection

    Specifications and requirements appropriate. Your Yamaha dealer can help you select the right propeller for your boating needs. Select a propeller that will allow the engine to reach the middle or upper half of the operating range at full throttle with the maximum boat- load.

  • Page 22: Fuel Requirements

    Specifications and requirements EMU36361 Recommended engine oil: Fuel requirements YAMALUBE 4 or 4-stroke outboard motor oil Recommended engine oil grade 1: EMU40203 Gasoline SAE 10W-30/10W-40/5W-30 API SG/SH/SJ/SL Use a good quality gasoline that meets the Recommended engine oil grade 2: minimum octane rating.

  • Page 23: Muddy Or Acidic Water

    All ethanol blends containing more than 10% ethanol can cause fuel system damage or cause engine starting and running problems. Yamaha does not recommend gasohol con- taining methanol because it can cause fuel system damage or engine performance problems.

  • Page 24: Components

    Components EMU46722 Components diagram TIP: * May not be exactly as shown; also may not be included as standard equipment on all mod- els (order from dealer). F25GMH, F25GWH, F25GE ZMU08783 1. Top cowling 2. Clamp bracket 3. Oil level plug 4.
  • Page 25 Components F25GET ZMU08784 1. Top cowling 2. Clamp bracket 3. Oil level plug 4. Anti-cavitation plate 5. Cooling water inlet 6. Gear oil drain screw 7. Propeller* 8. Trim tab 9. Drain screw 10. Power trim and tilt switch* 11. Idle hole 12.

  • Page 26: Fuel Tank

    Components 14 13 EMU25804 1. Top cowling Fuel tank 2. Manual starter handle* If your model was equipped with a portable 3. Starter button* fuel tank, its function is as follows. 4. Alert indicator EWM00021 5. Engine shut-off cord (lanyard)* 6.

  • Page 27: Fuel Joint

    Components ZMU01723 ZMU02284 1. Fuel joint 1. Power trim and tilt switch 2. Fuel gauge 2. Remote control lever 3. Fuel tank cap 3. Neutral interlock trigger 4. Air vent screw 4. Neutral throttle lever 5. Main switch EMU25831 6. Engine shut-off switch Fuel joint 7.

  • Page 28: Neutral Interlock Trigger

    Components when the neutral throttle lever is in the closed 6. Throttle position. 7. Fully open EMU26202 EMU25914 Neutral interlock trigger Tiller handle To shift out of neutral, first pull the neutral in- To change direction, move the tiller handle to terlock trigger up.

  • Page 29: Throttle Grip

    Components ZMU08722 ZMU08723 1. Forward “ ” 2. Neutral “ ” 3. Reverse “ ” EMU25963 Throttle indicator The fuel consumption curve on the throttle 1. Forward “ ” indicator shows the relative amount of fuel 2. Neutral “ ” consumed for each throttle position.

  • Page 30: Throttle Friction Adjuster

    Components ZMU08725 1. Throttle indicator EMU25978 Throttle friction adjuster A friction device provides adjustable resis- tance to movement of the throttle grip or the remote control lever, and can be set accord- ing to operator preference. To increase resistance, turn the adjuster clockwise.

  • Page 31: Engine Stop Button

    Components Avoid accidentally pulling the cord dur- ing 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.

  • Page 32: Manual Starter Handle

    Components “ ” (start) EMU26075  Manual starter handle With the main switch in the “ ” (start) po- The manual starter handle is used to crank sition, the starter motor turns to start the en- and start the engine. gine.

  • Page 33: Power Trim And Tilt Switch On Remote Control

    Components accident. EMU32054 Power trim and tilt switch on remote control The power trim and tilt system adjusts the outboard motor angle in relation to the tran- som. Pushing the switch “ ” (up) trims the outboard motor up, and then tilts it up. Push- ing the switch “...

  • Page 34: Variable Trolling Rpm Switches

    Components trims it down. When the switch is released, the outboard motor will stop in its current po- sition. For instructions on using the power trim and tilt switch, see page 58. EWM01032 Use the power trim and tilt switch located on the bottom cowling only when the boat ZMU08786 is at a complete stop with the engine off.

  • Page 35: Trim Rod (Tilt Pin)

    Components the starboard side “B” in the figure. EMU47200 Tilt lock mechanism ECM00841 The tilt lock mechanism is used to prevent the outboard motor from lifting out of the wa- The trim tab also serves as an anode to ter when in reverse gear. protect the engine from electrochemical corrosion.

  • Page 36: Tilt Support Bar

    Components port and fall. If the motor cannot be trailered in the normal running position, use an additional support device to se- cure it in the tilt position. EMU26334 Tilt support bar The tilt support bar keeps the outboard motor in the tilted up position.

  • Page 37: Alert Indicator

    Components EMU26305 Alert indicator If the engine develops a condition which is cause for alert, the indicator lights up. For details on how to read the alert indicator, see page 33. ZMU08740 1. Alert indicator 1. Alert indicator...

  • Page 38: Instruments And Indicators

    Instruments and indicators EMU36016 EMU36034 Indicators Overheat-alert indicator If the engine temperature rises too high, this indicator will light up. For further information EMU36026 Low oil pressure-alert indicator on reading the indicator, see page 33. If oil pressure drops too low, this indicator will ECM00053 light up.

  • Page 39: Engine Control System

    EMU26806 Alert system ECM00093 Do not continue to operate the engine if an alert device has activated. Consult your Yamaha dealer if the problem cannot be located and corrected. ZMU01758 EMU43754 Overheat alert This engine has an overheat-alert device. If the engine temperature rises too high, the alert device will activate.
  • Page 40 If the alert system has activated, stop the en- ZMU08745 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. The buzzer will sound (if equipped).  ZMU02360...

  • Page 41: Installation

    Installation tiller handle). EMU26903 Installation The information presented in this section is intended as reference only. It is not possible to provide complete instructions for every possible boat and motor combination. Proper mounting depends in part on experience and the specific boat and motor combination. EWM01591 Overpowering a boat could cause se- ...
  • Page 42 Installation ZMU01760 1. Center line (keel line) EMU26926 Mounting height To run your boat at optimum efficiency, the water resistance (drag) of the boat and out- board motor must be made as little as possi- ble. The mounting height of the outboard motor greatly affects the water resistance.

  • Page 43: Clamping The Outboard Motor

    Consult your Yamaha dealer or boat man- ufacturer for further information on deter- mining the proper mounting height. For instructions on setting the trim angle of ...
  • Page 44 Installation than those contained in the engine packaging. If used, they must be of at least the same quality of material and strength and must be tightened se- curely. After tightening, test run the engine and check their tightness. [EWM00652] ZMU02637 1.

  • Page 45: Operation

    Operation life. NOTICE: Failure to follow the break-in EMU36382 First-time operation procedure could result in reduced engine life or even severe engine damage. [ECM00802] EMU36393 EMU27086 Fill engine oil Procedure for 4-stroke models The engine is shipped from the factory with- Your new engine requires a period of 10 out engine oil.

  • Page 46: Fuel Level

    Check that the fuel filter is clean and free of water. If any water is found in the fuel, or if a significant amount of debris is found, the fuel tank should be checked and cleaned by a Yamaha dealer. ZMU08747...

  • Page 47: Controls

    Operation ZMU08749 ZMU08748 EMU38901 Controls Tiller handle models: Move the tiller handle fully to the left and  right to make sure operation is smooth. Turn the throttle grip from the fully closed  to the fully open position. Make sure that it turns smoothly and that it completely re- turns to the fully closed position.

  • Page 48: Engine

    (4) Check that the oil level on the oil dipstick is between the upper and lower marks. Consult your Yamaha dealer if the oil level is not at the proper level or if it ap- pears milky or dirty.

  • Page 49: Checking Power Trim And Tilt System

    EMU36585 Battery Check the battery’s charge. If your boat is equipped with a Yamaha digital speedome- EMU38911 ter, the voltmeter and low battery alert func- Checking power trim and tilt system tions will help you monitor the battery’s EWM01971 charge.

  • Page 50: Filling Fuel

    The electrical connections of the battery and cables must be clean and properly connected or the bat- tery will not start the engine. If the battery needs charging, consult your Yamaha dealer or the battery manufacturer’s instructions. ZMU02301 EMU2743A Filling fuel (3) Remove the portable tank from the boat.

  • Page 51: Operating Engine

    Operation (10) Wipe up any spilled gasoline immediate- ly with dry rags. Dispose rags properly according to local laws or regulations. EMU27453 Operating engine EWM00421 Before starting the engine, make sure  ZMU02295 that the boat is tightly moored and that you can steer clear of any obstructions.

  • Page 52: Starting Engine

    Operation (3) Squeeze the primer pump, with the ar- power means the loss of most steering control. Also, without engine power, row pointing up, until you feel it become firm. During engine operation, place the the boat could slow rapidly. This could cause people and objects in the boat to tank horizontally, otherwise fuel cannot be drawn from the fuel tank.
  • Page 53 Operation EMU27597 Electric start / prime start models EWM01842 6FM-00 Failure to attach the engine shut-off  cord could result in a runaway boat if START operator is ejected. Attach the engine shut-off cord to a secure place on your clothing, or your arm or leg while oper- ating.
  • Page 54 Operation keep the starter motor turning for more than 5 seconds. If the starter motor is turned continuously for more than 5 seconds, the battery will be quickly discharged, thus making it impossible to 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 “...
  • Page 55 Operation 6FM-00 START ZMU08756 ZMU08758 (4) Push the starter button to start the en- TIP: gine. The start-in-gear protection device prevents the engine from starting except when in neu- tral. (2) Attach the engine shut-off cord to a se- cure place on your clothing, or your arm or leg.
  • Page 56 Operation page 51. tral. If the engine is warm and fails to start, (2) Attach the engine shut-off cord to a se-  open the throttle slightly and try to start the cure place on your clothing, or your arm engine again.

  • Page 57: Checks After Starting Engine

    NOTICE: If the low oil pressure-alert blocked. Consult your Yamaha dealer if indicator blinks after the engine the problem cannot be located and cor- starts, stop the engine. Otherwise, rected.

  • Page 58: Checks After Engine Warm Up

    Operation EMU36532 Checks after engine warm up EMU36542 Shifting While the boat is tightly moored, and without applying throttle, confirm that the engine shifts smoothly into forward and reverse, and back to neutral. ZMU01727 EMU36981 Stop switches 1. Neutral interlock trigger Turn the main switch to “...
  • Page 59 Operation 6FM-00 START ZMU08763 ZMU08758 (2) After the engine is at idle speed in gear TIP: move the remote control lever / gear Tiller handle models: The gear shift lever op- shift lever firmly and crisply into the neu- erates only when the throttle grip is in the ful- tral position.

  • Page 60: Stopping Boat

    Operation wind direction. EMU30881 Trolling EMU30891 Adjusting trolling speed The trolling speed on outboard motors equipped with the variable trolling RPM switches can be adjusted approximately 50 ZMU08756 r/min with each press of a switch. ZMU08790 EMU31743 1. “ ” switch Stopping boat 2.

  • Page 61: Procedure

    Operation at high speed is not recommended. EMU2784A Procedure (1) Push and hold the engine stop button or turn the main switch to “ ” (off). (2) After stopping the engine, disconnect the fuel line if there is a fuel joint on the outboard motor.

  • Page 62: Trimming Outboard Motor

    Operation switch to “ ” (off). EMU38881 Adjusting trim angle for manual tilt models EMU27865 Trimming outboard motor EWM00401 EWM00741 Stop the engine before adjusting the  Excessive trim for the operating condi- trim angle. tions (either trim up or trim down) can Use care to avoid being pinched when ...

  • Page 63: Adjusting Trim Angle (Power Trim And Tilt)

    Operation for the first time. Increase speed gradu- ally and watch for any signs of instabil- ity or control problems. Improper trim angle can cause loss of control. If equipped with a power trim and tilt  switch located on the bottom cowling, use the switch only when the boat is at a complete stop with the engine off.

  • Page 64: Adjusting Boat Trim

    Operation angles to find the position that works best for your boat and operating conditions. EMU27913 Adjusting boat trim When the boat is on plane, a bow-up attitude results in less drag, greater stability and effi- ciency. This is generally when the keel line of the boat is up about 3 to 5 degrees.

  • Page 65: Procedure For Tilting Up (Manual Tilt Models)

    Operation duce salt corrosion. EWM00223 Make sure that no one is near the out- board motor when tilting the outboard motor up or down. Otherwise, body parts could be crushed between the outboard motor and the clamp bracket. EWM00251 ZMU03087 Leaking fuel is a fire hazard.

  • Page 66: Procedure For Tilting Up

    Operation ZMU08808 ZMU03196 (4) Hold the rear of the top cowling with one hand and tilt the engine up fully. (5) The tilt support bar will turn to the lock position automatically. NOTICE: Do not use the tilt support lever or knob when trailering the boat.

  • Page 67: Procedure For Tilting Down (Manual Tilt Models)

    Operation ZMU08770 ZMU08771 EMU30193 Procedure for tilting down (manual tilt models) (1) Place the tilt lock lever in the lock posi- tion. (3) Push the tilt support knob into the clamp bracket support engine. WARNING! After tilting the outboard motor, be sure to support it with the ZMU08809 tilt support knob or tilt support lever.

  • Page 68: Procedure For Tilting Down (Power Trim And Tilt Models)

    Operation EMU44601 Procedure for tilting down (power trim and tilt models) (1) Push the power trim and tilt switch “ ” (up) until the outboard motor is support- ed by the tilt rod and the tilt support knob becomes free. (2) Pull out the tilt support knob.
  • Page 69 Operation ZMU08808 (3) Slightly tilt the outboard motor up. The EMU28126 Procedure tilt support bar will lock automatically, (1) Place the remote control lever / gear supporting the outboard motor in a par- shift lever in neutral. tially raised position. This outboard mo- tor has 2 positions for shallow water cruising.

  • Page 70: Power Trim And Tilt Models

    Operation ZMU08809 (2) Slightly tilt the outboard motor up to the (6) Slowly lower the outboard motor to the desired position using the power trim normal position. and tilt switch. WARNING! Using the power trim and tilt switch on the bot- EMU32852 Power trim and tilt models tom cowling while the boat is moving...

  • Page 71: Cruising In Other Conditions

    Cruising in muddy, turbid, or acidic water Yamaha strongly recommends that you use the optional chromium-plated water pump kit (see page 17) 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.

  • Page 72: Maintenance

    Leaking fuel is a fire hazard. When  such as a transom saver bar. Consult your transporting and storing the outboard Yamaha dealer for further details. motor, disconnect the fuel line from the outboard motor to prevent fuel from EMU47180 leaking.
  • Page 73 Maintenance (4) To prevent steering movement, turn the adjuster lever to “A” (if equipped with the adjuster lever). To hold the steering bracket easily, raise the tiller handle to the vertical position (if equipped with the tiller handle). ZMU08788 1. Handgrip ZMU08787 (5) Loosen the clamp screw(s).

  • Page 74: Storing Outboard Motor

    Maintenance be performed to prevent excessive damage. It is advisable to have your outboard motor serviced by an authorized Yamaha dealer prior to storage. However, you, the owner, with a minimum of tools, can perform the fol- lowing procedures. ECM01081 To prevent problems which can be ...

  • Page 75: Lubrication

    Maintenance it with cooling water. Either the engine Do not touch or remove electrical water pump will be damaged or the en- parts when starting or during opera- gine will be damaged from overheating. tion. Keep hands, hair, and clothes away from the flywheel and other ro- Cooling system flushing is essential to pre- tating parts while the engine is run-...

  • Page 76: Flushing Power Unit

    85. Inspect the oil for the pres- ence of water that indicates a leaky seal. Seal replacement should be performed by an authorized Yamaha dealer prior to use. (3) Grease all grease fittings. For further de- tails, see page 76.

  • Page 77: Cleaning The Outboard Motor

    For cooling system flushing instructions,  to perform a maintenance procedure, see page 66. have a Yamaha dealer or other qualified mechanic do the work. EMU44342 Cleaning the outboard motor The procedures involve disassembling the motor and exposing dangerous parts.

  • Page 78: Severe Operating Conditions

    Maintenance design and quality. Any part of inferior quality may malfunction, and the resulting loss of control could endanger the operator and passengers. Yamaha genuine parts and ac- cessories are available from your Yamaha dealer. EMU34152 Severe operating conditions Severe operating conditions involve one or...

  • Page 79: Maintenance Chart 1

     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 80 Maintenance Initial Every Item Actions Page 20 hours 100 hours 300 hours 500 hours (3 months) (1 year) (3 years) (5 years) Inspection or Fuel filter (can be replacement as disassembled) necessary Fuel line (High Inspection — pressure) Inspection or Fuel line (High replacement as —...

  • Page 81: Maintenance Chart 2

    Inspection or nections/wire cou- replacement as — pler connections necessary (Yamaha) Inspection — Meter/gauge Inspection and Fuel tank (Yamaha cleaning as neces- — portable tank) sary EMU47210 *1 Thermostat cover *2 Cylinder head, Cylinder block EMU46082 Maintenance chart 2 Every...

  • Page 82: Greasing

    Maintenance EMU28945 Greasing Yamaha grease A (water resistant grease) Yamaha grease D (corrosion resistant grease; for propeller shaft) F25GMH, F25GWH ZMU08779...

  • Page 83: Cleaning And Adjusting Spark Plug

    Do not attempt to diagnose any problems yourself. Instead, take the outboard motor to a Yamaha dealer. You should periodically re-...
  • Page 84 Maintenance ZMU08803 ZMU08804 1. Clamp 1. Spark plug (2) Remove the spark plug caps from the Standard spark plug: spark plugs. DPR6EB-9 (4) Be sure to use the specified spark plug, otherwise the engine may not operate properly. Before fitting the spark plug, measure the electrode gap with a wire thickness gauge;...

  • Page 85: Checking Fuel Filter

    For cleaning or replacement of the (2) Once the engine has warmed up, verify fuel filter, consult your Yamaha dealer. whether the idle speed is set to specifi- cation. For idle speed specifications, see page 12.
  • Page 86 If you are not familiar with the proce- dure for changing the engine oil, consult your Yamaha dealer. ZMU08799 (1) Put the outboard motor in an upright po- 1. Oil filler cap sition (not tilted).
  • Page 87 Consult your Then tighten 1/4 to 1/2 turn more. Tighten Yamaha dealer if the oil level is out of the drain screw to the correct torque with a specified level.

  • Page 88: Replacing The Engine Oil Filter

     fastened to the transom or a stable stand. Yamaha recommends you to have a Yamaha dealer replace the engine oil filter. If you perform replacement yourself, follow the procedure below. If you have any ques- ZMU08752 tions, please consult a Yamaha dealer.

  • Page 89: Why Yamalube

    Yamaha’s experience gained over many years of research and development into oil since the 1960’s helps make Yama- lube the best choice for your Yamaha en- gine. 1. O-ring (5) Turn the engine oil filter clockwise and tighten it to the specified torque.

  • Page 90: Checking Propeller

    Maintenance EMU32113 Checking propeller EWM01882 You could be seriously injured if the en- gine accidentally starts when you are near the propeller. Before inspecting, re- moving, or installing the propeller, place the shift control in neutral, turn the main switch to “ ”...

  • Page 91: Installing Propeller

    Maintenance equipped), and thrust washer. Propeller nut tightening torque: 34 N·m (3.4 kgf·m, 25 lb·ft) EMU30673 Installing propeller (4) Align the propeller nut slot with the pro- EMU46121 peller shaft hole. Insert a new cotter pin Spline models in the hole and bend the cotter pin ends. ECM00502 NOTICE: Do not reuse the cotter pin.
  • Page 92 Have a TIP: Yamaha dealer check and repair the Apply a light coat of gear oil to the gear oil outboard motor. drain screw thread and gasket before instal-...

  • Page 93: Inspecting And Replacing Anode(S)

    EMU29318 EMU29324 Inspecting and replacing anode(s) Checking battery (for electric start models) Yamaha outboard motors are protected from corrosion by sacrificial anodes. Inspect the EWM01903 external anodes periodically. Remove scales from the surfaces of the anodes. Consult a Battery electrolyte is poisonous and...

  • Page 94: Connecting The Battery

    Maintenance should be clean, secure, and covered by cables must be clean and properly con- an insulating cover. WARNING! Bad nected, or the battery will not start the connections can produce shorting or engine. arcing and cause an explosion. EMU29372 [EWM01913] Disconnecting the battery (1) Turn off the battery cut-off switch (if...

  • Page 95: Trouble Recovery

    Please note that all of the items in this section may not apply to your model. If your outboard motor requires repair, bring it to a Yamaha dealer. If the engine trouble-alert indicator is blinking, consult your Yamaha dealer.
  • Page 96 Fuel filter Is fuel filter clogged? Clean or replace fuel filter. Ignition parts Are ignition parts malfunctioning? Have serviced by a Yamaha dealer. Alert system Has alert system activated? Find and correct cause of alert. Inspect wires for breaks and wear.
  • Page 97 Trouble Alert buzzer sounds or indicator lights. Item Question Answer Water pump Is water pump malfunctioning? Have serviced by a Yamaha dealer. Fuel filter Is there excess water in fuel filter? Drain fuel filter. Trouble Engine power loss. Item Question...

  • Page 98: Temporary Action In Emergency

    EMU29442 Impact damage to the nearest harbor slowly and careful- EWM00871 (4) Have a Yamaha dealer check the out- The outboard motor can be seriously board motor before operating it again. damaged by a collision while operating or trailering. Damage could make the out-...

  • Page 99: Power Trim And Tilt Will Not Operate

    Trouble Recovery ZMU08782 ZMU08781 1. Manual valve screw 1. Fuse puller 2. Cap (2) Put the engine in the desired position, 3. Fuse (20 A) then tighten the manual valve screw by 4. Spare fuse (20 A) turning it counterclockwise. EMU29534 Starter will not operate If the starter mechanism does not operate...

  • Page 100: Emergency Starting Engine (Manual Start Model)

    Trouble Recovery Avoid accidentally pulling the cord dur- (2) Remove the manual starter after remov-  ing normal operation. Loss of engine ing the bolt(s). 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 101: Emergency Starting Engine (Electric Start Model)

    Trouble Recovery repeat the procedure. If the engine fails to start after 4 or 5 tries, open the throttle a small amount (between 1/8 and 1/4) and try again. Also if the engine is warm and fails to start, open the throttle a same amount and try to start the engine again.
  • Page 102 Trouble Recovery ZMU08757 ZMU01771 (3) Insert the knotted end of the emergency starter rope into the notch in the flywheel magnet and wind the rope 1 or 2 turn(s) around the flywheel magnet clockwise. (4) Pull the rope slowly until resistance is felt.

  • Page 103: Treatment Of Submerged Motor

    EMU33502 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.

  • Page 104: Index

    INDEX Emergency starting engine (electric start model)......... 95 Alcohol and drugs ........2 Emergency starting engine (manual Alert indicator........31 start model)......... 94 Alert system .......... 33 Emergency, temporary action in ... 92 Anode(s), inspecting and replacing ..87 Engine, checking ........42 Anti-fouling paint ........
  • Page 105 INDEX Installation requirements....... 13 Personal flotation devices (PFDs) ..2 Instruments and indicators....32 Power trim and tilt ........1 Power trim and tilt switch (bottom cowling) ..........27 Power trim and tilt switch (remote Key number ..........5 control)..........27 Power trim and tilt system, checking..
  • Page 106 INDEX Throttle friction adjuster ......24 Throttle grip........... 23 Throttle indicator ........23 Tiller handle .......... 22 Tilting up and down....... 58 Tilt lock mechanism ......29 Tilt support bar........30 Tilt support knob ........29 To install the battery ......14 Top cowling, installing......
  • Page 108 Printed in Japan November 2019–0.4  1 !

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