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Yamaha F350 Owner's Manual

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F350
LF350
F350A2
FL350A2
OWNER'S MANUAL
Read this manual carefully before operating this
LIT-18626-09-97
outboard motor.
6AW-28199-38-E0

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Summary of Contents for Yamaha F350

  • Page 1 F350 LF350 F350A2 FL350A2 OWNER’S MANUAL Read this manual carefully before operating this LIT-18626-09-97 outboard motor. 6AW-28199-38-E0...
  • Page 2 EMU25063 Les gaz d’échappement du moteur de ce produit contiennent des substances chimiques connues dans l’État de Californie pour provoquer le cancer, des anomalies congénitales et des troubles de la reproduction. ZMU07696 Read this manual carefully before operating this outboard motor. Keep this manual onboard in a waterproof bag when boating.
  • 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 Specifications and requirements ........15 Outboard motor safety ..... 1 Propeller..........1 Specifications......... 15 Rotating parts........1 ............15 Hot parts ........... 1 Installation requirements....16 Electric shock ........1 Boat horsepower rating ....16 Power trim and tilt ......
  • Page 5 Table of contents Installation ........62 Start/Stop switch panel for quad type ..........42 Installation........62 All Start/Stop switch panel ....42 Mounting the outboard motor ..62 Power trim and tilt switch on Operation ......... 64 digital electronic control ....42 First-time operation ......
  • Page 6 Lubrication ........102 IMPORTANT WARRANTY Cleaning and anticorrosion INFORMATION IF YOU USE measures ........102 YOUR YAMAHA OUTSIDE Flushing power unit ....... 102 THE U.S.A. OR CANADA ..130 Checking painted surface of outboard motor ......103 Periodic maintenance....103 Replacement parts ......

  • Page 7: Safety Information

    Safety information tor and the clamp bracket when the motor is EMU33622 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 EMU36501 area before operating the power trim and tilt Propeller...

  • Page 8: Gasoline Exposure And Spills

    Overloading or incorrect weight Have an approved PFD on board for every distribution can compromise the boats han- occupant. Yamaha recommends that you dling and lead to an accident, capsizing or must wear a PFD whenever boating. At a...

  • Page 9: Avoid Collisions

    Safety information EMU33772 EMU44160 Avoid collisions Accident reporting Scan constantly for people, objects, and oth- Boat operators are required by law to file a er boats. Be alert for conditions that limit your Boating Accident Report with their boating visibility or block your vision of others. law enforcement agency if their boat is in- volved in any of the following accidents: There is loss of life or probable loss of...

  • Page 10: Passenger Training

    Safety information go to boatus.org. For Canada In the U.S.A. United States Coast Guard All operators of pleasure craft must illustrate competency by means of a Pleasure Craft Consumer Affairs Staff (G-BC) Operators Card with the exception of Per- Office of Boating, Public, and Consumer Af- sonal Water Craft used for rental purposes fairs which require a rental checklist be complet-...

  • Page 11: Basic Boating Rules (Rules Of The Road)

    Safety information Suite 8 vessel. Normally, you should not cross in Bolton, ON front of the vessel with the right-of-way. You L7E 1H1 should slow down or change directions brief- http://www.nmma.org/ ly and pass behind the other vessel. You should always move in such a way that the operator of the other vessel can see what EMU33691 Basic boating rules (Rules of...

  • Page 12: Other Special Situations

    Safety information Meeting Overtaking If you are meeting another power vessel If you are passing another vessel, you are head on, and are close enough to run the risk the “Give-Way” vessel. This means that the of collision, neither of you has the right-of- other vessel is expected to maintain its way Both of you should alter course to avoid course and speed.
  • Page 13 Safety information trawls are considered to be “fishing vessels” This system uses buoys and signs with dis- under the International Rules. Vessels with tinctive shapes and colors to show regulatory trolling lines are not considered fishing ves- or advisory information. These markers are sels.
  • Page 14 Safety information ZMU01708...

  • Page 15: General Information

    The outboard motor serial number is TIP: stamped on the label attached to the port Consult your Yamaha dealer if you have any side of the clamp bracket. questions concerning the digital electronic Record your outboard motor serial number in control serial number.

  • Page 16: Key Number

    General information ZMU05958 ZMU07288 1. Digital electronic control serial number loca- tion ZMU07133 1. Key number EMU38980 EC Declaration of Conformity (DoC) This declaration is included with outboard motors that conform to European regula- tions. This outboard motor conforms to certain por- tions of the European Parliament directive EMU25191 relating to machinery.

  • Page 17: Ce Marking

    General information Code of conformed directives  EMU38992 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 and 2004/108/EC. ZMU05943 1. CE marking location ZMU06040...

  • Page 18: Read Manuals And Labels

    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. F350, LF350, F350A2, FL350A2 ZMU05950...
  • Page 19 General information ZMU06191 helm, which could prevent a runaway EMU34651 Contents of labels boat. The above warning labels mean as follows. EMU33850 Other labels EWM01681 WARNING Keep hands, hair, and clothing away  from rotating parts while the engine is running.
  • Page 20 General information Electrical hazard EMU35132 Symbols The following symbols mean as follows. Notice/Warning ZMU05666 ZMU05696 Read Owner’s Manual ZMU05664 Hazard caused by continuous rotation ZMU05665...

  • Page 21: Specifications And Requirements

    Specifications and requirements Bore  stroke: EMU34521 Specifications 94.0  96.0 mm (3.70  3.78 in) TIP: Ignition system: “(AL)” stated in the specification data below Spark plug (NGK): represents the numerical value for the alumi- LFR6A-11 num propeller installed. Spark plug gap: Likewise, “(SUS)”...

  • Page 22: Installation Requirements

    Specifications and requirements Min. pump octane number (PON): EMU33554 Installation requirements Recommended engine oil: EMU33564 Boat horsepower rating YAMALUBE 4M FC-W or 4-stroke EWM01560 outboard motor oil WARNING Recommended engine oil grade 1: Overpowering a boat can cause severe SAE 10W-30/10W-40/5W-30 instability.

  • Page 23: Battery Requirements

    Yamaha outboard motor Minimum cold cranking amps and every application. (CCA/SAE): Your Yamaha dealer can help you select the 750 A right propeller for your boating needs. Select Minimum marine cranking amps a propeller that will allow the engine to reach...

  • Page 24: Counter Rotation Models

    For instructions on propeller removal and in- speed range when carrying lighter loads. stallation, see page 112 and 112. Yamaha recommends to use a propeller suit- EMU35140 Start-in-gear protection able for the “Shift Dampener System (SDS)”.

  • Page 25: Fuel Requirements

    However, if gasoline with Ethanol is the oline or premium unleaded fuel. Yamaha only fuel available in your area, your Yamaha recommends that you use alcohol-free gaso- outboard motor is calibrated to run properly...

  • Page 26: Gasoline Additives

    Consult your authorized posits from a boat’s fuel system, particular- Yamaha dealer for a 10-micron filter that ly in older boats, as well as tanks and pipes meets your engine’s requirements.

  • Page 27: Anti-Fouling Paint

    Spare parts, such as an extra set of spark  use on aluminum may be applied to the out- plugs. board motor. The original Yamaha paint sur- Consult your Yamaha dealer for details. face may be scuffed lightly before applying EMU25222...

  • Page 28: Star Labels

    SPARK PLUG GAP (mm): SPARK PLUG: VALVE LASH (mm) IN: FUEL: GASOLINE YAMAHA MOTOR CO.,LTD. INFORMATION ANTIPOLLUTION CE MOTEUR EST CONFORME AUX NORMES D’ÉMISSIONS EPA DES É.-U. ET DE LA CALIFORNIE POUR MOTEURS MARINS À ÉTINCELLE. POUR LES SPÉCIFICATIONS ET LES RÉGLAGES À...
  • Page 29 Specifications and requirements ZMU01702 ZMU01704 EMU40340 EMU33861 Two Stars—Very Low Emission Four Stars—Super Ultra Low Emission The two-star label identifies engines that The four-star label identifies engines that meet the Air Resources Board’s Personal meet the Air Resources Board’s Sterndrive Watercraft and Outboard marine engine and Inboard marine engine 2009 exhaust 2004 exhaust emission standards.

  • Page 30: Components

    EMU2579Y Components diagram TIP: * May not be exactly as shown; also may not be included as standard equipment on all mod- els (order from dealer). F350, LF350, F350A2, FL350A2 ZMU05813 1. Top cowling 2. Anti-cavitation plate 3. Propeller* 4. Cooling water inlet 5.
  • Page 31 Components Single station models (single type) ZMU07278 1. Digital electronic control (side-mount type)* 2. Engine shut-off switch* 3. Clip* 4. Switch panel (for use with side-mount type)* 5. Digital electronic control (single type)* 6. Switch panel (for use with single type)*...
  • Page 32 Components Single station models (twin/triple type) ZMU07285 1. Digital electronic control (twin type)* 2. Engine shut-off switch* 3. Clip* 4. Switch panel (for use with twin type)* 5. Start/Stop switch panel (for use with twin type)* 6. Digital electronic control (triple type)* 7.
  • Page 33 Components Dual station models / main station ZMU07279 1. Digital electronic control (single type)* 12. All Start/Stop switch panel (for use with twin/triple type)* 2. Switch panel (for use with single type)* 13. Station selector switch panel 3. Engine shut-off switch* 4.
  • Page 34 Components Dual station models / sub station ZMU07275 1. Digital electronic control (single type)* 2. Start/Stop switch panel (for use with single type)* 3. Digital electronic control (twin type)* 4. Start/Stop switch panel (for use with twin type)* 5. Digital electronic control (triple type)* 6.
  • Page 35 Components Quad type ZMU07306 1. Main station 2. Sub station (dual station model)* 3. Digital electronic control (quad type) 4. Switch panel (for use with quad type) 5. Station selector switch panel* 6. Engine shut-off switch panel (for use with quad type) 7.

  • Page 36: Digital Electronic Control

    Components CANCEL MENU ZMU07205 1. Tachometer unit (Square type)* 2. Tachometer unit (Round type)* 3. Speedometer unit (Square type)* 4. Speed & fuel meter unit (Square type)* 5. Speed & fuel meter unit (Round type)* 6. Fuel management meter unit (Square type)* 7.

  • Page 37: Digital Electronic Control-Active Indicator

    Components ZMU05850 ZMU07289 1. Control lever 2. Free throttle switch 3. Throttle friction adjuster 4. Power trim and tilt switch EMU42270 Digital electronic control-active indicator The digital electronic control-active indicator indicates that the digital electronic control ZMU05851 system is in the operating state. ZMU05959 ZMU06276 1.

  • Page 38: Digital Electronic Control-Alert Indicator

    The digital electronic control-alert indicator lights when trouble occurs in the connection ZMU05890 between the digital electronic control and outboard motor. Consult your Yamaha deal- er for details. ZMU05966 1. Digital electronic control-active indicator ZMU06227 For quad type, the digital electronic control- active indicators are integrated to the power trim and tilt switch panel.

  • Page 39: Control Lever

    Components ing the lever back from neutral engages re- verse. The engine will continue to run at idle speed until the lever move to 22.5 (a detent can be felt). Moving the lever farther opens the throttle, and the engine will begin to ac- celerate.

  • Page 40: Neutral Interlock Trigger

    Components ZMU06228 ZMU06285 1. Neutral interlock trigger EMU35832 Free throttle switch In neutral, keep this switch pressed, move the control lever forward, and release the switch after the digital electronic control-ac- tive indicator starts blinking. While the indica- tor blinks, you can open or close the throttle. This can also be done when the control lever ZMU05878 is set in reverse.
  • Page 41 Components Twin type 22.5˚ ZMU06232 ZMU05882 1. Fully open 2. Fully closed 22.5 3. Free accelerator Single type ZMU05883 1. Fully open 2. Fully closed 3. Free accelerator ZMU05880 Triple type 22.5 ZMU05881 ZMU05961 1. Fully open 2. Fully closed 3.
  • Page 42 Components 22.5 ZMU05962 1. Fully open 2. Fully closed 3. Free accelerator Quad type ZMU07293 22.5 ZMU07292 ZMU07294 1. Fully open 2. Fully closed 3. Free accelerator The free throttle switch can only be used when the control lever is in the neutral posi- tion.

  • Page 43: Throttle Friction Adjuster

    Components control lever is moved at least 22.5. Single type After using the free throttle switch, return the control lever to the neutral position. The free throttle switch will return automatically to its set position. The digital electronic control-ac- tive indicator will change from blinking to continuously lit and the digital electronic con- trol will then engage forward and reverse normally.

  • Page 44: Station Selector Switch

    Components Quad type gine selector switch works only when all the control levers are in neutral. ZMU07295 When constant speed is desired, tighten the ZMU05977 adjuster to maintain the desired throttle set- 1. Engine selector switch ting. EMU35711 EMU35774 Station selector switch Engine shut-off cord (lanyard) and The station selector switch can select either clip...
  • Page 45 Components TIP: The engine cannot be started with the clip re- moved. START START ZMU05818 ZMU06235 ZMU05978 ZMU04565 ZMU07144 ZMU07143 ZMU07142...

  • Page 46: Main Switch

    Components Single type START ZMU07307 ZMU06245 1. Cord 2. Clip 3. Engine shut-off switch START EMU35782 Main switch The main switch controls the ignition system; its operation is described below. Only equipped with the main station. “ ” (off)  ZMU04567 With the main switch in the “...

  • Page 47: Start/Stop Switch Panel

    Components EMU42080 Start/Stop switch panel The engine can be started or turned off by pressing the Start/Stop button. For twin and triple type, it is possible to start or turn off in- dividual engine. The indicator for the corre- sponding engine will come on. PORT:Port side engine ...

  • Page 48: Start/Stop Switch Panel For Quad Type

    Components ZMU07175 ZMU07317 1. Indicator 1. Indicator 2. Start/Stop button 2. Start/Stop button EMU42250 EMU41631 Start/Stop switch panel for quad type All Start/Stop switch panel The engine can be started or turned off by The Start/Stop button allows all engines to pressing the Start/Stop button.

  • Page 49: Power Trim And Tilt Switch On Bottom Cowling

    Components pages 91 and 93. falling overboard and could distract the operator, increasing the risk of collision with another boat or an obstacle. ZMU06234 ZMU05823 EMU42260 Power trim and tilt switches The power trim and tilt system adjusts the outboard motor angle in relation to the tran- som.

  • Page 50: Tilt Limiter

    Components TIP: Consult your Yamaha dealer about changing the setting. EMU35030 Tilt support lever for power trim and tilt model To keep the outboard motor in the tilted up position, lock the tilt support lever to the clamp bracket. Make sure that the lever is ZMU05964 securely retained by the bolts.

  • Page 51: Cowling Lock Lever (Turn Type)

    Components EMU35053 Cowling lock lever (turn type) To remove the top cowling, turn the cowling lock levers at the front and side to release them and lift off the cowling. Reverse this procedure when reinstalling the top cowling. ZMU05934 ZMU05852 When installing the cowling, check to be sure it fits properly in the rubber seal.

  • Page 52: Fuel Filter

    TIP: Adding an in-line 10-micron fuel filter has been shown to greatly reduce the chance of fuel contamination problems. Consult your dealer for information about Yamaha 10-mi- cron fuel filters if your boat does not have one. ZMU05825 1. Flushing device TIP: For details on usage, see page 102.

  • Page 53: Instruments And Indicators

    Instruments and indicators EMU41542 6. Engine trouble-alert indicator Command Link Plus Display 7. Low battery voltage-alert indicator The Command Link Plus Display (hereinafter 8. Water separator-alert indicator called the Multi-Display) shows engine sta- 9. Low oil pressure-alert indicator 10. Overheat-alert indicator tus and alert information.

  • Page 54: Low Oil Pressure-Alert

    Do not continue to run the engine if the  a alert device has activated. Consult low oil pressure alert device has activat- your Yamaha dealer if the problem can- ed. Serious engine damage will occur. not be located and corrected. EMU41700...

  • Page 55: Low Battery Voltage-Alert

    ZMU07251 ZMU07242 ZMU07252 Get back to the port soon if the low battery voltage-alert device has activated. For charging the battery, consult your Yamaha ZMU07250 dealer. Stop the engine immediately and see page EMU41710 Engine trouble alert 123 of this manual to drain the water from the The pop-up window will appear if the engine fuel filter.

  • Page 56: Command Link Multifunction Meters

    For the optional sensor, consult your Yamaha dealer. The tachometer unit is avail- able in round and square types. Check your tachometer unit type. ZMU07254 Return to port and consult a Yamaha dealer immediately. EMU40792 Command Link Multifunction Meters...

  • Page 57: Low Oil Pressure-Alert

    2. Trim meter has activated while the appropriate engine 3. Multifunction display oil quantity is maintained, consult your 4. Water detection-alert indicator Yamaha dealer. 5. Engine trouble alert/maintenance indicator ECM01601 6. Cooling water pressure NOTICE 7. Oil pressure (4-stroke models) Do not continue to run the engine if the 8.

  • Page 58: Water Separator Alert

    (fuel filter) while cruising. In such an event, stop the engine immediately and see page 123 of this manu- al to drain the water from the fuel filter. Get back to the port soon and consult a Yamaha ZMU05425...

  • Page 59: Low Battery Voltage-Alert

    NOTICE Speed & Fuel Meter In such an event, the engine will not oper- ate properly. Consult a Yamaha dealer im- The speed & fuel meter unit shows the boat mediately. speed and has the functions of fuel meter, to-...

  • Page 60: Command Link Multifunction Speedometer

    For the optional sensors, consult your Yamaha dealer. After the main switch is first turned to the “ ” (on) position, all of the displays come on ZMU05434 as a test.

  • Page 61: Fuel Management Meter

    Various meters can be installed onto the out- board motor according to user preference. The fuel management meter has the func- For details, consult your Yamaha dealer. tions of fuel flow meter, total consumption display, fuel economy display, and remaining fuel display.

  • Page 62: Analog Tachometer

    Instruments and indicators Analog tachometer ZMU07245 Trim meter ZMU04581...

  • Page 63: Engine Control System

    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. EMU35184 ZMU05891 Digital Electronic Control alert If during operation of the outboard motor any...
  • Page 64 Engine control system light or blink. ZMU04583 ZMU05421 ZMU07155 ZMU05422 The pop-up window will appear on the  Multi-Display. ZMU07156 ZMU07238 The buzzer will sound.  ZMU06297...

  • Page 65: Low Oil Pressure Alert

    Engine control system ZMU07332 ZMU07321 If the alert system has activated, stop the en- gine and check the cooling water inlets: Check trim angle to be sure that the cool-  ing water inlet is submerged. Check the cooling water inlet for clogging. ...

  • Page 66: Water Separator Alert

    Engine control system crease to about 2000 r/min. is correct and the alert device does not The low oil pressure-alert indicator of the switch off, consult your Yamaha dealer.  Command Link Multifunction Tachometer Multiple engine drive users: will light or blink.
  • Page 67 If the alert system has activated, stop the en- gine and see page 123 of this manual to drain the water from the fuel filter. Get back to the port soon and consult a Yamaha deal- er immediately. ECM02470 NOTICE...

  • Page 68: Installation

    Installation EMU26902 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. EWM01590 WARNING ZMU01760...
  • Page 69 ECM01634 1. Center line (keel line) NOTICE Make sure that the idle hole is high Consult your Yamaha dealer or boat manu-  enough to prevent water from entering facturer for further information on determin- the engine even if the boat is stationary ing the proper mounting location.

  • Page 70: Operation

    Operation For 10 hours for breaking in engine avoid ex- EMU36381 First-time operation tended idling, rough water and crowded ar- eas. EMU36391 Fill engine oil For the first hour of operation: The engine is shipped from the factory with- Run the engine at varying speeds up to out engine oil.

  • Page 71: Remove Cowling

    If enough water to raise the float ring is found in the fuel, or if a significant amount ZMU05852 of debris is found, the fuel tank should be checked and cleaned by a Yamaha dealer. ZMU05853 ZMU05854 EMU36442 Fuel system...

  • Page 72: Engine Shut-Off Cord (Lanyard)

    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 73: Install Cowling

    ZMU06135 After installing, check the fitting of the top cowling by pushing it with both hands. If the ZMU06057 top cowling is loose, have it repaired by your Yamaha dealer. 1. Fitting 2. Flushing device EMU36941 Install cowling Be sure that all cowling lock levers are released.

  • Page 74: Checking Power Trim And Tilt System

    Operation EMU35243 Checking power trim and tilt system EWM01930 WARNING Never get under the lower unit while it  is tilted, even when the tilt support lever is locked. Severe injury could occur if the outboard motor accidentally falls. Body parts can be crushed between the ...

  • Page 75: Filling Fuel

    Operation start the engine. ly with dry rags. Dispose of rags properly Refer to the battery manufacturer’s instruc- according to local laws or regulations. tions for checks for your particular battery. EMU27452 Operating engine EMU30026 Filling fuel EWM00420 WARNING EWM01830 WARNING Before starting the engine, make sure ...

  • Page 76: Change Of Station

    If the buzzer sounds and the water separator-alert indica- For dual station boats, the station selector tor blinks, consult your Yamaha dealer im- switch can select either the main station or mediately. sub station for the operating seat.
  • Page 77 Operation ZMU04628 ZMU06236 ZMU05829 ZMU07167 TIP: The start-in-gear protection device prevents the engine from starting except when in neu- START START 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.
  • Page 78 Operation START ZMU07296 ZMU06246 Turn the main switch to “ ” (on) to make sure that the digital electronic con- START trol-active indicator lights. The engine can not be started when the digital elec- tronic control-alert indicator lights. ZMU04596 START Turn the main switch to “...
  • Page 79 Operation START ZMU07149 ZMU05994 When starting the engine using the Start/Stop button on the All Start/Stop panel, press the button to start the all en- START gines. ZMU07297 When starting the engine using the Start/Stop button, press the button to start the engine.
  • Page 80 Operation start after 5 seconds of cranking, re- turn the main switch to “ ” (on), wait 10 seconds, then crank the engine again. [ECM00192] TIP: The sub station can start and stop the en- gine. However, it cannot operate the digital electronic control.
  • Page 81 Operation of the sub station lights. engine. The indicator for the starting en- gine will come on. NOTICE: Do not 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.

  • Page 82: 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 problem cannot be located and corrected. ZMU07299...

  • Page 83: Checks After Engine Warm Up

    Operation EMU36531 Checks after engine warm up EMU36541 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. EMU41820 Stop switches Perform the following procedure to check that the main switch and engine shut-off switch operate properly.
  • Page 84 Operation side control lever. The center engine runs at the average  speed of port side and starboard side en- gines’ speeds. Operate the starboard side engine using  the starboard side control lever. Push the engine selector switch once to operate the port side and starboard side engines.

  • Page 85: Shifting

    Operation ZMU05999 ZMU06285 EMU35124 1. Neutral interlock trigger Shifting Move the control lever firmly and crisply EWM00180 WARNING forward (for forward gear) or backward Before shifting, make sure there are no (for reverse gear) 22.5 (a detent can swimmers or obstacles in the water near felt).

  • Page 86: Stopping Boat

    Operation ZMU05829 ZMU06239 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.
  • Page 87 Operation pipe due to the wave action, causing en- gine trouble. ZMU06004 ZMU07323 Operate the port side engine using the port  ZMU06003 side control lever. 1. Port side control lever When all engines have started, the center  2. Starboard side control lever engine will run at the average speed of 3.
  • Page 88 Operation ZMU06005 ZMU06007 ZMU07324 ZMU07325 Operate the port side engine using the port Operate the port side engine using the port   side control lever. side control lever. Operate the starboard side engine using Operate the center engine using the star- ...

  • Page 89: Operating The Quad Type Engine

    Operation ZMU06009 ZMU06010 ZMU07326 ZMU07327 Operate the center engine using the port Operate the center engine using the port   side control lever. side control lever. Operate the starboard side engine using EMU42320  Operating the quad type the starboard side control lever. engine Operating the center engine The port side control lever operates the port...
  • Page 90 Operation CP CS S ZMU07313 1. Port side control lever 2. Starboard side control lever 3. Port side engine 4. Center port side engine 5. Center starboard side engine 6. Starboard side engine...

  • Page 91: Boat Direction

    Operation EMU35901 Boat direction The illustrations below indicate the boat direction when operating the three outboard motors. When using the port side engine, center engine and starboard side engine ZMU06011 :Boat direction and turning force The size of the arrow is proportional to the turning force. :Propulsion...
  • Page 92 Operation When using the port side engine and starboard side engine ZMU06012 :Boat direction and turning force The size of the arrow is proportional to the turning force. :Propulsion...
  • Page 93 Operation When using the center engine ZMU06013 :Boat direction and turning force The size of the arrow is proportional to the turning force. :Propulsion...

  • Page 94: Trolling

    Operation EMU30880 Trolling EMU41831 Adjusting trolling speed When the control lever is either in the for- ward position or in the reverse position and CANCEL the throttle is in the fully closed position, you can randomly adjust the trolling speed be- MENU tween 600 r/min and 1000 r/min by increas- ing or decreasing it approximately by 50...
  • Page 95 Operation START ZMU06014 ZMU06247 START ZMU04599 ZMU07172 ZMU07171 ZMU07300 ZMU05833 ZMU07148...

  • Page 96: Procedure For Dual Station Models (Sub Station)

    Operation ZMU07149 ZMU07147 ZMU07150 ZMU07148 TIP: The engine can also be stopped by pulling the cord and removing the clip from the en- gine shut-off switch, then turning the main switch to “ ” (off). Remove the key if the boat will be left un- attended.

  • Page 97: Trimming Outboard Motor

    Operation ZMU07298 TIP: 1. Trim operating angle The engine can also be stopped by pulling EMU27888 the engine shut-off cord and removing the Adjusting trim angle (Power trim and clip from the engine shut-off switch, then tilt) turning the main switch on the main station to EWM00753 “...
  • Page 98 Operation ZMU07308 ZMU06259 1. Power trim and tilt switch ZMU05834 ZMU07309 1. Power trim and tilt switch ZMU05835 ZMU05836 1. Power trim and tilt switch To raise the bow (trim-out), press the switch “ ” (up). To lower the bow (trim-in), press the switch “...

  • Page 99: Adjusting Boat Trim

    Operation angles to find the position that works best for your boat and operating conditions. EMU27912 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 100: Procedure For Tilting Up

    Operation EWM01543 WARNING Make sure that all people are clear of the outboard motor when tilting the outboard motor up and down. Body parts can be crushed between the outboard motor and the clamp bracket when the outboard mo- tor is trimmed or tilted. ECM00991 ZMU05829 NOTICE...
  • Page 101 Operation ZMU05838 ZMU05839 Set the tilt support lever to support the engine. WARNING! After tilting the outboard motor, be sure to support it with the tilt support knob or tilt sup- port lever. Otherwise the outboard motor could fall back down suddenly if oil in the power trim and tilt unit or in the power tilt unit loses pressure.

  • Page 102: Procedure For Tilting Down (Power Trim And Tilt Models)

    Operation ZMU05856 Push the power trim and tilt switch “ ” (down) to lower the outboard motor to the desired position. ZMU05824 Once the outboard motor is supported with the tilt support lever, press the pow- er trim and tilt switch “ ”...

  • Page 103: Shallow Water

    Operation ZMU05841 ZMU05842 EMU28062 Shallow water EMU42220 Power trim and tilt models The outboard motor can be tilted up partially to allow operation in shallow water. ECM01490 NOTICE If the engine speed is suddenly in-  creased when the outboard motor is ZMU06021 partially tilted up, the power trim and tilt unit could be damaged.
  • Page 104 Operation ZMU06236 ZMU06280 ZMU05829 ZMU05837 Slightly tilt the outboard motor up to the desired position using the power trim and tilt switch. WARNING! Using the power trim and tilt switch on the bot- tom cowling while the boat is moving or engine is on could increase the risk of falling overboard and could distract the operator, increasing the...
  • Page 105 Operation motor may hits an object in the water as tilting down. Close the throttle so that the engine slows to idle speed. After the engine is at idle speed in gear move the control lever firmly and crisply into the neutral position. ZMU07319 ZMU06236 ZMU07302...

  • Page 106: Operating In Other Conditions

    Operation ZMU05840 ZMU07341 ZMU05841 ZMU05842 EMU41370 Operating in other conditions Operating in salt water After operating in saltwater, brackish water, or water high in other minerals, flush the cooling system with fresh water to minimize corrosion and clogging of the cooling water passages with deposits.

  • Page 107: Maintenance

    Maintenance EMU41531 EMU35411 Transporting and storing Storing outboard motor When storing your Yamaha outboard motor outboard motor for prolonged periods of time (2 months or EWM02640 longer), several important procedures must WARNING be performed to prevent excessive damage. USE CARE when transporting fuel tank, ...

  • Page 108: Procedure

    Air space above the gasoline allows air seal. Seal replacement should be per- movement which can bring in water through formed by an authorized Yamaha dealer condensation as the air temperature chang- prior to use. Grease all grease fittings. For further de- Condensation inside the fuel tank can cause tails, see page 108.

  • Page 109: Checking Painted Surface Of Outboard Motor

    With the engine off, turn on the water tap have a Yamaha dealer or other qualified and let the water flush through the cool- mechanic do the work. ing passages for about 15 minutes. Turn...

  • Page 110: Replacement Parts

    Yamaha marine dealership. A service manual is available for purchase through your Yamaha dealer for owners who have the mechanical skills, tools, and other equipment necessary to perform mainte- nance not covered by this owner’s manual.

  • Page 111: 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 112 Maintenance Initial Every Item Actions 20 hours hours hours hours (3 months) (1 year) (3 years) (5 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...

  • Page 113: Maintenance Chart 2

    (3 months) (1 year) (3 years) (5 years) Wire harness connec- Inspection or replace- tions/wire coupler con- ment as necessary nections (Yamaha) Meter/gauge Inspection EMU34451 Maintenance chart 2 Every Item Actions 1000 hours Exhaust guide/exhaust Inspection or replace- manifold...

  • Page 114: Greasing

    Maintenance EMU41300 Greasing Yamalube Marine Grease F350, LF350, F350A2, FL350A2 ZMU05859 ponent. The condition of the spark plug can EMU44281 Inspecting spark plug indicate something about the condition of the The spark plug is an important engine com- engine. For example, if the center electrode...
  • Page 115 Do not attempt to diagnose any problems yourself. Instead, take the out- board motor to a Yamaha dealer. You should periodically remove and check the spark plug because heat and deposits will cause the spark plug to slowly break down and erode.

  • Page 116: Inspecting Engine Idle Speed

    Maintenance 1. Spark plug gap 2. Spark plug part number 3. Spark plug I.D. mark (NGK) ZMU07703 Spark plug gap: 1. Bolt 1.0–1.1 mm (0.039–0.043 in) 2. Ignition coil To install the spark plug Wipe off any dirt from the threads, insu- Bolt tightening torque: lator, and gasket surface of the spark 9 Nm (0.92 kgf-m, 6.6 ft-lb)

  • Page 117: Changing Engine Oil

    Start the engine and allow it to warm up fully in neutral until it is running smooth- Inspect the engine idle speed. If the en- gine idle speed is out of specification, consult a Yamaha dealer or other quali- fied mechanic. Idle speed (in neutral): 600-700 r/min...

  • Page 118: Removing Propeller

    Maintenance ZMU01897 Checkpoints Check each of the propeller blades for ero-  sion from cavitation or ventilation, or other damage. ZMU07187 Check the propeller shaft for damage.  1. Cotter pin Check the splines for wear or damage.  2. Propeller nut Check for fish line tangled around the pro- ...
  • Page 119 Maintenance ation and be lost. Apply Yamaha marine grease or a corro- sion resistant grease to the propeller shaft. Install the thrust washer and propeller on the propeller shaft. NOTICE: Make sure to install the thrust washer before in- stalling the propeller. Otherwise, the...

  • Page 120: Changing Gear Oil

    Consult your Yamaha dealer. case may be damaged. Have a [ECM01900] Yamaha dealer check and repair the outboard motor. [ECM00713] TIP: For disposal of used oil, consult your Yamaha dealer.

  • Page 121: Inspecting And Replacing Anode(S)

    F350CB 1.520 L (1.607 US qt, 1.338 Imp.qt) EMU29316 Inspecting and replacing anode(s) FL350AET2 1.310 L (1.385 US qt, Yamaha outboard motors are protected from 1.153 Imp.qt) corrosion by sacrificial anodes. Inspect the LF350CB 1.310 L (1.385 US qt, external anodes periodically. Remove scales 1.153 Imp.qt)

  • Page 122: Checking Battery (For Electric Start Models)

    Consult a tery’s charge. If the battery needs charg- Yamaha dealer for inspection and replace- ing, consult your Yamaha dealer. ment of internal anodes attached to the pow- Check the battery connections. They er unit.
  • Page 123 6. Battery for starting nected, or the battery will not start the 7. Negative connecting cable engine. Connecting an accessory battery (optional) 1. If connecting an accessory battery, consult your Yamaha dealer about cor- rect wiring. For the fuse size, see ABYC (E-11).
  • Page 124 Maintenance Twin engines Triple engines ZMU05941 ZMU05956 1. Starboard side engine 1. Starboard side engine 2. Port side engine 2. Center engine 3. Red cable 3. Port side engine 4. Black cable 4. Red cable 5. Isolator lead with circuit protection 5.

  • Page 125: Disconnecting The Battery

    Maintenance Quad engines damage to the electrical system. [ECM01940] Disconnect the positive cable(s) and re- move the battery from the boat. Clean, maintain, and store the battery according to the manufacturer’s instruc- tions. ZMU07314 1. Starboard side engine 2. Center starboard side engine 3.

  • Page 126: Trouble Recovery

    A. Clean or replace fuel filter. ing, consult your Yamaha dealer. Q. Is fuel pump malfunctioning? Starter will not operate. A. Have serviced by a Yamaha dealer. Q. Does the Digital electronic control-alert in- dicator come on? Q. Are spark plugs fouled or of incorrect A.
  • Page 127 Q. Is low oil pressure-alert indicator on or blinking? Q. Are ignition parts malfunctioning? A. Have serviced by a Yamaha dealer. A. Have serviced by a Yamaha dealer. Q. Is heat range of spark plugs incorrect? Q. Has alert system activated? A.
  • Page 128 Trouble Recovery (r/min) range. Q. Are electrical parts malfunctioning? Q. Is outboard motor mounted at incorrect A. Have serviced by a Yamaha dealer. height on transom? A. Have outboard motor adjusted to proper Q. Is specified fuel not being used? transom height.

  • Page 129: Temporary Action In Emergency

    If any of the engines can not Q. Is steering pivot loose or damaged? be operated for in case of emergency, be A. Have serviced by a Yamaha dealer. sure to keep the unused engine(s) tilted up EMU29433...

  • Page 130: Power Trim And Tilt Will Not Operate

    2. Ignition coil / Fuel injector / Variable cam- damage and a fire hazard. shaft timing / Engine ECM (Electronic control module) fuse (30 A) Consult your Yamaha dealer if the new fuse 3. Fuel pump fuse (15 A) immediately blows again. 4. Starting switch (30 A) 5.
  • Page 131 Trouble Recovery If the water separator-alert indicator blinks, perform the following procedure. Stop the engine. Remove the top cowling. Disconnect the lead from the holder. ZMU05892 Disconnect the water detection switch coupler. NOTICE: Be careful not to get any water on the water detection switch coupler, otherwise a malfunc- ZMU05893 tion could occur.
  • Page 132 Trouble Recovery ZMU05895 ZMU05895 Unscrew the filter cup from the filter Bolt tightening torque: housing. NOTICE: Be careful not to 8 Nm (0.82 kgf-m, 5.9 ft-lb) twist the water detection switch lead when unscrewing the filter cup. 11. Connect the water detection switch cou- pler securely until a click is heard.

  • Page 133: 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 immedi- ately. NOTICE: Do not attempt to run the outboard motor until it has been com- pletely inspected.

  • Page 134: Consumer Information

    Owner’s Manual. The owner of the outboard motor shall give notice to an authorized Yamaha Outboard Motor Dealer of any and all apparent defects within ten (10) days of discovery and make the motor available at that time for inspection and repairs at the dealer’s place of business.
  • Page 135 TRANSFER OF WARRANTY Transfer of the warranty from the original purchaser to any subsequent purchaser is possible by having the motor inspected by an authorized Yamaha Outboard Motor Dealer and requesting the dealer to submit a change of registration to Yamaha within ten (10) days of the transfer.

  • Page 136: Important Warranty Information If You Use Your Yamaha Outside The U.s.a. Or Canada

    He will be able to contact Yamaha on your behalf to see if any refund can be provided.
  • Page 137 — right out of the box. Yamalube — Take care of your Yamaha with legendary Yamalube oils, lubricants, and care products. They’re formulated and approved by the toughest judges we know: the Yamaha engineering teams that know your Yamaha from the inside out.
  • Page 138 Printed in Japan December 2012–0.1  1 ! Printed on recycled paper...

This manual is also suitable for:

Lf350Fl350a2F350a2

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