Yamaha F300 Owner's Manual
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Yamaha F300 Owner's Manual

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OWNER'S MANUAL
q Read this manual carefully before operating this
outboard motor.
F300
LF300
F350
LF350
F350A1
FL350A1
U.S.A.Edition
LIT-18626-08-89
6AW-28199-17

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Summary of Contents for Yamaha F300

  • Page 1 F300 LF300 F350 LF350 F350A1 FL350A1 OWNER’S MANUAL U.S.A.Edition q Read this manual carefully before operating this LIT-18626-08-89 outboard motor. 6AW-28199-17...
  • Page 2 EMU25062 ZMU01690 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 Therefore some items may not apply to ev- Yamaha. If you have any question about the ery model. operation or maintenance of your outboard EMU25111 motor, please consult a Yamaha dealer.

  • Page 4: Table Of Contents

    Table of contents Safety information......1 Specifications........ 15 Installation requirements....16 Outboard motor safety ....1 Boat horsepower rating ....16 Propeller..........1 Mounting motor ....... 17 Rotating parts........1 Digital electronic control Hot parts ........... 1 requirements ....... 17 Electric shock ........
  • Page 5 Table of contents Power trim and tilt switches..... 39 Engine ..........57 Tilt limiter......... 39 Flushing device ....... 57 Tilt support lever for power trim Install cowling ........58 and tilt model ........ 39 Checking power trim and Cowling lock lever (turn type)..40 tilt system ........
  • Page 6 ........86 IMPORTANT WARRANTY Flushing power unit ......86 INFORMATION IF YOU USE Cleaning the outboard motor ..87 YOUR YAMAHA OUTSIDE Checking painted surface of THE USA OR CANADA .... 114 motor..........87 Periodic maintenance....87 Replacement parts ......88 Maintenance interval guidelines..

  • Page 7: Safety Information

    Safety information EMU33622 tor and the clamp bracket when the motor is Outboard motor safety trimmed or tilted. Keep body parts out of this Observe these precautions at all times. area at all times. Be sure no one is in this EMU36501 area before operating the power trim and tilt Propeller...

  • Page 8: Gasoline Exposure And Spills

    Personal flotation devices cording to the boat manufacturers instruc- Have an approved personal flotation device tions. Overloading or incorrect weight (PFD) on board for every occupant. Yamaha distribution can compromise the boats han-...

  • Page 9: Avoid Collisions

    Safety information dling and lead to an accident, capsizing or boating in hazardous weather. swamping. EMU33800 Accident reporting EMU33772 Avoid collisions Boat operators are required by law to file a Scan constantly for people, objects, and oth- Boating Accident Report with their state er boats.

  • Page 10: Passenger Training

    Safety information go to boatus.org. United States Power Squadrons 1-888-FOR-USPS (1-888-367-8777) EMU33880 Passenger training www.usps.org Make sure at least one other passenger is trained to operate the boat in the event of an Boat Owners Association of The United emergency. States EMU33890 1-800-336-BOAT (1-800-336-2628)

  • Page 11: Steering And Sailing Rules And Sound Signals

    Safety information EMU33700 vessels try to avoid each other. If that is the Steering and sailing rules and sound case, both vessels become “ Give-Way ” signals vessels. Whenever two vessels on the water meet EMU25521 Rules when encountering vessels one another, one vessel has the right-of- There are three main situations that you may way;...

  • Page 12: Other Special Situations

    Safety information EMU25531 Other special situations There are three other rules you should be aware of when driving your boat around oth- er vessels. Narrow channels and bends When navigating in narrow channels, you should keep to the right when it is safe and practical to do so.
  • Page 13 Safety information Reading buoys and other markers The waters of the United States are marked for safe navigation by the lateral system of buoyage. Simply put, buoys and markers have an arrangement of shapes, colors, numbers and lights to show which side of the buoy a boater should pass on when navigat- ing in a particular direction.
  • Page 14 Safety information ZMU01708...

  • Page 15: General Information

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

  • Page 16: Key Number

    General information ZMU05958 1. Key number 1. Digital electronic control serial number loca- tion 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 relating to machinery.
  • Page 17 General information 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. EMU33831 Warning labels If these labels are damaged or missing, contact your Yamaha dealer for replacements. F300, LF300, F350, LF350, F350A1, FL350A1 ZMU05942...
  • Page 19 General information ZMU05741 EMU33850 Other labels ZMU05710...
  • Page 20 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 21: Specifications And Requirements

    Specifications and requirements EMU35950 Idling speed (in neutral): Specifications 650 ±50 r/min TIP: Engine: “*” means, select the engine oil referring to Type: 4-stroke V the chart of engine oil paragraph. For further Displacement: information, see page 19. 5330.0 cm EMU2821E Bore ×...

  • Page 22: Installation Requirements

    Specifications and requirements F300TR X 8.0 L (8.46 US qt, 7.04 Imp.qt) F350AET1 X Recommended gear oil: Hypoid gear oil SAE 90 or 80W-90, F350TR X FL350AET1 XL API GL-5 LF300TR XL Gear oil quantity: LF350TR XL F300TR 1.520 L Fuel and oil: (1.607 US qt, 1.338 Imp.qt) Recommended fuel:...

  • Page 23: Mounting Motor

    Your dealer or other person experienced in Consult your Yamaha dealer for setting. proper rigging should mount the motor using EMU25694 correct equipment and complete rigging in- Battery requirements structions.

  • Page 24: Multiple Batteries

    These propellers are identified with the Your Yamaha dealer can help you select the letter “L” after the size indication on the pro- right propeller for your boating needs. Select peller. WARNING! Never use a standard...

  • Page 25: Engine Oil Requirements

    Engine oil requirements minimum octane rating. If knocking or ping- ing occurs, use a different brand of gasoline Recommended engine oil: or premium unleaded fuel. Yamaha recom- YAMALUBE 4-M or FC-W rated 4- mends that you use alcohol-free (see Gaso- stroke hol) gasoline whenever possible.

  • Page 26: Ring Free Fuel Additive

    Yamaha recommends the use of meets the minimum octane ratings. E85 is a Ring Free Fuel Additive, available from your Yamaha dealer. Ring Free Fuel Addi- fuel containing 85% ethanol and must not be used in your outboard motor. All ethanol...

  • Page 27: Emission Control Information

    This label is attached to the clamp bracket or with clip. the swivel bracket. Spare parts, such as an extra set of spark plugs. Consult your Yamaha dealer for details. EMU25221 Emission control information EMU25230 North American models This engine conforms to U.S. Environmental Protection Agency (EPA) regulations for ma- rine SI engines.
  • Page 28 Specifications and requirements ZMU01703 ZMU05817 EMU25300 1. Star labels location Three Stars—Ultra Low Emission The three-star label identifies engines that EMU25280 meet the Air Resources Board’s 2008 ex- One Star—Low Emission The one-star label identifies engines that haust emission standards. Engines meeting meet the Air Resources Board’s 2001 ex- these standards have 65% lower emissions haust emission standards.
  • Page 29 Specifications and requirements ZMU05663...

  • Page 30: Components

    EMU2579M Components diagram TIP: * May not be exactly as shown; also may not be included as standard equipment on all mod- els. F300, LF300, F350, LF350, F350A1, FL350A1 ZMU05813 1. Top cowling 2. Anti-cavitation plate 3. Propeller* 4. Cooling water inlet 5.
  • Page 31 Components Single station models ZMU06310 1. Digital electronic control (side-mount type)* 2. Clip 3. Engine shut-off switch 4. Switch panel (for use with side-mount type)* 5. Digital electronic control (single type)* 6. Switch panel (for use with single type)* 7. Digital electronic control (twin type)* 8.
  • Page 32 Components Dual station models / main station ZMU05974 1. Digital electronic control (single type)* 2. Switch panel (for use with single type)* 3. Digital electronic control (twin type)* 4. Switch panel (for use with twin type)* 5. Clip 6. Engine shut-off switch 7.
  • Page 33 Components Dual station models / sub station ZMU05975 1. Digital electronic control (single type)* 2. Switch panel (for use with single type)* 3. Digital electronic control (twin type)* 4. Switch panel (for use with twin type)* 5. Clip 6. Engine shut-off switch 7.

  • Page 34: Digital Electronic Control

    Components ZMU05429 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 (Square type)* EMU35942 Digital electronic control The digital electronic control actuates the ZMU06225...

  • Page 35: Digital Electronic Control-Active Indicator

    Components EMU34972 Digital electronic control-active indicator The digital electronic control-active indicator indicates that the digital electronic control system is in the operating state. ZMU05850 ZMU06276 ZMU05851 ZMU05888 ZMU05959 1. Control lever 2. Digital electronic control-active indicator 3. Digital electronic control-alert indicator 4.

  • Page 36: Digital Electronic Control-Alert Indicator

    Digital electronic control-alert indicator The digital electronic control-alert indicator lights when trouble occurs in the connection between the digital electronic control and outboard motor. Consult your Yamaha deal- er for details. ZMU05960 1. Digital electronic control-alert indicator EMU35821 Control lever Moving the lever forward from the neutral po- sition engages forward gear.

  • Page 37: Neutral Interlock Trigger

    Components Digital electronic control for twin type has the 4. Shift function of automatically synchronizing the 5. Fully closed engine speeds of both engines. 6. Throttle 7. Fully open Also digital electronic control for triple type has the function of automatically synchroniz- EMU26201 ing the engine speeds of the center engine Neutral interlock trigger...
  • Page 38 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 39: Throttle Friction Adjuster

    Components ver could move freely and cause an ac- cident. 22.5 Do not overtighten the friction adjuster. If there is too much resistance, it could be difficult to move the control lever, which could result in an accident. Single type ZMU05962 1.

  • Page 40: Station Selector Switch

    Components Triple type gine selector switch works only when all the control levers are in neutral. ZMU05963 ZMU05977 When constant speed is desired, tighten the adjuster to maintain the desired throttle set- 1. Engine selector switch ting. EMU35711 EMU35772 Station selector switch Engine shut-off cord (lanyard) and The station selector switch can select either clip...
  • Page 41 Components TIP: The engine cannot be started with the clip re- moved. Main station ZMU05978 1. Cord 2. Clip 3. Engine shut-off switch ZMU06235 Sub station ZMU04565 ZMU05979 START START ZMU05818 ZMU05980...

  • Page 42: Main Switch

    Components Single type START ZMU05981 ZMU06245 1. Cord 2. Clip START 3. Engine shut-off switch EMU35781 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 43: Starter Button

    Components Triple type Triple type START START START ZMU05982 ZMU05985 EMU35730 EMU35740 Starter button Engine stop button To start the engine with the electric starter, To stop the engine, push the red button. Only push the black button. Only equipped on the equipped on the sub station.

  • Page 44: Power Trim And Tilt Switch On Digital Electronic Control

    Components Triple type ZMU05822 ZMU05988 EMU26153 EMU35152 Power trim and tilt switch on bottom Power trim and tilt switch on digital engine cowling electronic control The power trim and tilt switch is located on The power trim and tilt system adjusts the the side of the bottom engine cowling.

  • Page 45: Power Trim And Tilt Switches

    77 and 79. EMU35040 Tilt limiter This outboard motor is equipped with a tilt limiter that controls the tilt range. TIP: Consult your Yamaha dealer about changing the setting. EMU35030 Tilt support lever for power trim and ZMU05835 tilt model...

  • Page 46: Cowling Lock Lever (Turn Type)

    Components ZMU05852 ZMU05824 ZMU05853 ECM00660 NOTICE When installing the cowling, align the 3 posi- tions of the grommets to fit the cowling in the Do not use the tilt support lever or knob rubber seal. when trailering the boat. The outboard motor could shake loose from the tilt sup- port and fall.

  • Page 47: Flushing Device

    Command Link Tachometer will blink. The buzzer will sound intermittently only when the gear shift is in neutral. If the alert system has activated, stop the engine and consult a Yamaha dealer im- mediately. TIP: Adding an in-line 10-micron fuel filter has been show to greatly reduce the chance of fuel contamination problems.

  • Page 48: Instruments And Indicators

    8. Oil pressure (4-stroke models) play can be shown by connecting an optional sensor to the unit. For the optional sensor, consult your Yamaha dealer. The tachome- ter unit is available in round or square types. Check your tachometer unit type.

  • Page 49: Start-Up Checks

    If the buzzer sounds and the water sep- The default engine idle speed is reset au- arator-alert indicator blinks, consult your tomatically when the display is switched to Yamaha dealer immediately. the normal display. The default engine idle...

  • Page 50: Low Oil Pressure-Alert

    Instruments and indicators speed is also reset automatically when the Yamaha dealer. engine is turned off or when the engine ECM01601 NOTICE speed exceeds 3000 r/min. Do not continue to run the engine if the When warming up a cold engine, the troll-...

  • Page 51: Water Separator Alert

    (fuel filter) while cruising. In such an event, stop the engine immediately and see page 107 of this manu- al to drain the water from the fuel filter. Get back to the port soon and consult a Yamaha dealer immediately. ZMU05425 ZMU05423...

  • Page 52: Command Link Multifunction Speed & Fuel Meters

    For the optional sensors, consult your Yamaha dealer. The speed & fuel meter unit is available in round or square types. Check your speed &...

  • Page 53: Command Link Multifunction Speedometers

    For the optional sensors, consult your Yamaha dealer. After the main switch is first turned on, all the displays come on as a test. After a few sec-...

  • Page 54: Command Link Multifunction Fuel Management Meters

    Instruments and indicators EMU31632 Command link multifunction fuel management meters The fuel management meter has the func- tions of fuel flow meter, total consumption display, fuel economy display, and remain- ing fuel display. The chosen display is select- ed by using the “ ”...

  • Page 55: 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. EMU35183 ZMU05891 Digital Electronic Control alert If during operation of the outboard motor any...
  • Page 56 Engine control system START START ZMU05422 ZMU05827 The buzzer will sound. Main station START START START ZMU05989 Sub station ZMU06297 ZMU05990 ZMU04583 ZMU05991...

  • Page 57: Low Oil Pressure Alert

    If the overheat alert system of one engine ac- is correct and the alert device does not tivates, the engine will slow down. To switch switch off, consult your Yamaha dealer. off the alert activation on the engine not af- Twin engine drive or triple engine drive us-...

  • Page 58: Installation

    Consult your Yamaha dealer or boat manu- facturer for further information on determin- takes for the cooling system may not get ad- ing the proper mounting location.
  • Page 59 Test runs at differ- ent heights can help determine the optimum mounting height. Consult your Yamaha deal- er or boat manufacturer for further informa- tion on determining the proper mounting height.

  • Page 60: Operation

    Operation EMU36381 For 10 hours for breaking in engine avoid ex- First-time operation tended idling, rough water and crowded ar- EMU36391 eas. 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 61: Remove Cowling

    ZMU05852 water. If enough water to raise the float ring 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. ZMU05853 EMU36442 Fuel system...

  • Page 62: Engine Shut-Off Cord (Lanyard)

    Operation Operate the throttle levers several times to make sure there is no hesitation in their travel. Operation should be smooth over the complete range of motion, and each le- ver should return completely to the idle po- sition. EMU36922 Engine shut-off cord (lanyard) Inspect the engine shut-off cord for damage, ZMU05979...

  • Page 63: Engine Oil

    Consult your Yamaha gine can overheat during operation. dealer if the oil level is out of specified [ECM01800] level or if it appears milky or dirty.

  • Page 64: Install Cowling

    If the EMU36940 top cowling is loose, have it repaired by your Install cowling Yamaha dealer. Be sure that all cowling lock levers are released. Be sure that the rubber seal is seated all the way around the engine.

  • Page 65: Battery

    Operation the outboard motor accidentally falls. Body parts can be crushed between the motor and the clamp bracket when the motor is trimmed or tilted. Be sure no one is near the outboard motor before performing this check. Check the power trim and tilt unit for any sign of oil leaks.

  • Page 66: Filling Fuel

    Operation start the engine. according to local laws or regulations. Refer to the battery manufacturer’s instruc- EMU27451 Operating engine tions for checks for your particular battery. EMU31812 EMU30023 Sending fuel Filling fuel If there is a fuel joint or a fuel cock on the EWM01830 boat, firmly connect the fuel line to the WARNING...

  • Page 67: Starting Engine

    Operation Place the control lever in “ ” (neutral). TIP: The start-in-gear protection device prevents the engine from starting except when in neu- tral. ZMU05976 The digital electronic control-active indi- cator for the selected station lights. EMU27493 Starting engine EWM01600 ZMU06236 WARNING Before starting the engine, make sure...
  • Page 68 Operation ZMU04628 Turn the main switch to “ ” (start), and hold it for a maximum of 5 seconds. START START START ZMU05828 ZMU06246 START ZMU05993 Turn the main switch to “ ” (on) to ZMU04596 make sure that the digital electronic con- trol-active indicator lights.
  • Page 69 Operation TIP: The start-in-gear protection device prevents the engine from starting except when in neu- START tral. ZMU05830 START ZMU05829 Turn the main switch “ ” (on) to make sure that the digital electronic control- active indicator lights. The engine can not be started when the digital electronic control-alert indicator lights.
  • Page 70 Operation start after 5 seconds of cranking, re- of the sub station lights. 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.

  • Page 71: Checks After Starting Engine

    Operation ZMU05997 ZMU05984 Push the starter button to start the mo- tor. NOTICE: Never push the starter button while the engine is running. 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 72: Warming Up Engine

    EMU35880 Selecting outboard motor blocked. Consult your Yamaha dealer if (triple engine) the problem cannot be located and cor- rected. After all engines have started, set all control levers to Neutral.
  • Page 73 Operation Operate the port side engine using the port side control lever. The center engine runs at the idling speed. Operate the starboard side engine using the starboard side control lever. Push the engine selector switch twice to operate the center engine. ZMU05999 Operate the port side engine using the port side control lever.

  • Page 74: Shifting

    Operation equipped). ZMU06000 ZMU06285 1. Neutral interlock trigger Move the control lever firmly and crisply forward (for forward gear) or backward (for reverse gear) 22.5° (a detent can felt). 22.5˚ 22.5˚ ZMU05999 EMU35124 Shifting EWM00180 WARNING Before shifting, make sure there are no swimmers or obstacles in the water near ZMU06238 you.

  • Page 75: Stopping Boat

    Operation slows to idle speed. 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 76 Operation pipe due to the wave action, causing en- gine trouble. ZMU06004 Operate the port side engine using the port side control lever. When all engines have started, the center engine will run at the average speed of port side and starboard side engines’ speeds.
  • Page 77 Operation Operate the port side engine using the port side control lever. Operate the starboard side engine using the starboard side control lever. Operating the port side engine and center engine ZMU06008 ZMU06006 ZMU06009 Operate the center engine using the port side control lever.
  • Page 78 Operation ZMU06010 Operate the center engine using the port side control lever.

  • Page 79: 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 80 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 81 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 82: Stopping Engine

    Operation EMU27821 Stopping engine Before stopping the engine, first let it cool off for a few minutes at idle or low speed. Stop- ping the engine immediately after operating at high speed is not recommended. EMU35801 Procedure for single station models Turn the main switch to “...

  • Page 83: Trimming Outboard Motor

    Operation cause boat instability and can make steering the boat more difficult. This in- creases the possibility of an accident. If the boat begins to feel unstable or is hard to steer, slow down and/or readjust the trim angle. The trim angle of the outboard motor helps determine the position of the bow of the boat in the water.

  • Page 84: Adjusting Boat Trim

    Operation 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. Do not adjust the trim angle with this switch while the boat is moving.

  • Page 85: Tilting Up And Down

    Operation Bow Up TIP: Too much trim-out puts the bow of the boat Depending on the type of boat, the outboard too high in the water. Performance and econ- motor trim angle may have little effect on the omy are decreased because the hull of the trim of the boat when operating.

  • Page 86: Procedure For Tilting Up (Power Trim And Tilt Models)

    Operation stopped 30 seconds or more. EMU35505 Procedure for tilting up (power trim and tilt models) The main switch must be “ ” (on) for the power trim and tilt switch on the dig- ital electronic control to operate. Place the control lever in neutral. ZMU06280 ZMU06236 ZMU05837...

  • Page 87: Procedure For Tilting Down (Power Trim And Tilt Models)

    Operation 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 88: Shallow Water

    Operation ZMU05856 ZMU05841 Push the power trim and tilt switch “ ” (down) to lower the outboard motor to the desired position. ZMU06021 ZMU06258 ZMU05842 EMU28061 Shallow water ZMU05840 EMU32871 Power trim and tilt models The outboard motor can be tilted up partially to allow operation in shallow water.
  • Page 89 Operation unit could be damaged. Do not tilt the outboard motor up so that the cooling water inlet on the lower unit is above the surface of the water when setting up for and cruising in shallow water. Otherwise severe dam- age from overheating can result.

  • Page 90: Cruising In Other Conditions

    Operation ZMU06020 ZMU05839 To return the outboard motor to the nor- mal running position, press the power trim and tilt switch and slowly tilt the out- board motor down. EMU35391 Cruising in other conditions Cruising in salt water After operating in salt water, flush the cooling water passages with fresh water to prevent them from becoming clogged.

  • Page 91: Maintenance

    Leaking fuel is a fire hazard. When trans- TIP: porting and storing the outboard motor, The last time you use your Yamaha outboard close the fuel cock to prevent fuel from motor before storing it for a prolonged peri- leaking. Never get under the engine while od, add one ounce of Yamaha Fuel Condi- it is tilted.

  • Page 92: Lubrication

    98. 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. Grease all grease fittings. For further de- tails, see page 92.

  • Page 93: Cleaning The Outboard Motor

    Yamaha dealer or other qualified serious overheating. Be sure the con- mechanic do the work. nector is tightened securely on the The procedures involve disassembling fitting after flushing the engine.

  • Page 94: 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 95: Maintenance Chart 1

    The “ ” symbol indicates the check-ups which you may carry out yourself. The “ ” symbol indicates work to be carried out by your Yamaha dealer. Initial Every 20 hours Item...
  • Page 96 Maintenance Initial Every 20 hours Item Actions hours hours hours months) (1 year) (3 years) (5 years) Engine oil filter (car- Replacement tridge) 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)

  • Page 97: Maintenance Chart 2

    (5 years) Main switch/stop Inspection or replace- switch ment as necessary 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-...

  • Page 98: Greasing

    Maintenance EMU28932 Greasing Yamaha marine grease (Water resistant grease) F300, LF300, F350, LF350, F350A1, FL350A1 ZMU05859...

  • Page 99: Cleaning And Adjusting Spark Plug

    Instead, take the outboard motor to a Remove the bolts to move the plate. Yamaha dealer. You should periodically re- move and inspect the spark plug because heat and deposits will cause the spark plug to slowly break down and erode.
  • Page 100 Maintenance 2. Spark plug part number 3. Spark plug I.D. mark (NGK) Spark plug gap: 1.0–1.1 mm (0.039–0.043 in) When fitting the plug, wipe off any dirt from the threads, and then screw it in to the correct torque. ZMU05903 Spark plug torque: Remove the spark plug.
  • Page 101 Maintenance ZMU05901 Bolt tightening torque: 8.0 Nm (0.8 kgf-m, 5.8 ft-lb) 12. Install the rear cover, and tighten the ZMU05929 bolts. ZMU05900 Bolt tightening torque: 8.0 Nm (0.8 kgf-m, 5.8 ft-lb) ZMU05932 13. Be sure to fit the 4 positions during in- stallation.

  • Page 102: Inspecting Idling Speed

    3 months, and ev- ery 100 hours or at 1-year intervals there- after. Otherwise the engine will wear quickly. ZMU05930 Consult your Yamaha dealer for replace- ment of the engine oil filter and change of the engine oil. EMU29113 Checking wiring and connectors Check that each connector is engaged se- curely.

  • Page 103: Checking Propeller

    Maintenance EMU29174 Checking propeller EWM01881 WARNING 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 104: Installing Propeller

    EWM00800 tion and be lost. WARNING Be sure the outboard motor is securely Apply Yamaha marine grease or a cor- fastened to the transom or a stable rosion resistant grease to the propeller stand. You could be severely injured if shaft.
  • Page 105 ZMU05871 can cause gear damage. Consult a Yamaha dealer for repair of the lower Put a new gasket on the oil level plug. unit seals. When the oil begins to flow out of the oil...

  • Page 106: Inspecting And Replacing Anode(S)

    Tightening torque: 3 Nm (0.3 kgf-m, 2.2 ft-lb) EMU29312 Inspecting and replacing anode(s) Yamaha outboard motors are protected from corrosion by sacrificial anodes. Inspect the external anodes periodically. Remove scales from the surfaces of the anodes. Consult a ZMU05873...

  • Page 107: Connecting The Battery

    WARNING! Bad Connecting an accessory battery (optional) connections can produce shorting or If connecting an accessory battery, con- arcing and cause an explosion. sult your Yamaha dealer about correct [EWM01910] wiring. For the fuse size, see ABYC (E- EMU35493 11).
  • Page 108 Maintenance Single engine Twin engines ZMU05939 ZMU05941 1. Isolator lead with circuit protection 1. Starboard side engine 2. Red cable 2. Port side engine 3. Black cable 3. Red cable 4. Fuse 4. Black cable 5. Battery for accessories 5. Isolator lead with circuit protection 6.

  • Page 109: Disconnecting The Battery

    Maintenance Triple engines Disconnect the negative cable(s) from the negative (-) terminal. NOTICE: Al- ways disconnect all negative (-) ca- bles first to avoid a short circuit and damage to the electrical system. [ECM01940] Disconnect the positive cable(s) and re- move the battery from the boat.

  • Page 110: Trouble Recovery

    Q. Has fuel pump malfunctioned? If your outboard motor requires repair, bring A. Have serviced by a Yamaha dealer. it to your Yamaha dealer. If the engine trouble-alert indicator is flash- Q. Are spark plug(s) fouled or of incorrect ing, consult your Yamaha dealer.
  • Page 111 Q. Is fuel contaminated or stale? A. Fill tank with clean, fresh fuel. Q. Is carburetor clogged? A. Have serviced by a Yamaha dealer. Q. Is fuel filter clogged? A. Clean or replace filter. Q. Is fuel joint connection incorrect? A.
  • Page 112 Q. Is fuel system obstructed? Q. Is water pump or thermostat faulty? A. Check for pinched or kinked fuel line or A. Have serviced by a Yamaha dealer. other obstructions in fuel system. Q. Is there excess water in fuel filter cup? Q.

  • Page 113: Temporary Action In Emergency

    When using only one or two en- gines in an emergency, be sure to keep the Q. Is steering pivot loose or damaged? unused engine(s) tilted up and operate the A. Tighten or have serviced by a Yamaha other engine(s) at low speed. dealer. ECM01730...

  • Page 114: Replacing Fuse

    3. Spare fuse (10 A, 15 A, 20 A, 30 A, 60 A) of wire could allow excessive current flow. This could cause electric system damage and a fire hazard. Consult your Yamaha dealer if the new fuse immediately blows again. ZMU05875 1. Fuel feed pump fuse (10 A) 2.

  • Page 115: Power Trim And Tilt Will Not Operate

    If the engine cannot be tilted up or down with the power trim and tilt because of a dis- 1. Water separator-alert indicator charged battery or a failure with the power trim and tilt unit, consult your Yamaha deal- Stop the engine. Remove the top cowling. EMU35073 Disconnect the lead from the holder.
  • Page 116 Trouble Recovery ZMU05895 Unscrew the filter cup from the filter housing. NOTICE: Be careful not to twist the water detection switch lead when unscrewing the filter cup. [ECM01960] ZMU05892 Disconnect the water detection switch coupler. NOTICE: Be careful not to get any water on the water detection switch coupler, otherwise a malfunc- tion could occur.

  • Page 117: Treatment Of Submerged Motor

    EMU33501 Treatment of submerged motor If the outboard motor is submerged, immedi- ately take it to a Yamaha dealer. Otherwise ZMU05895 some corrosion may begin almost immedi- ately. NOTICE: Do not attempt to run the...

  • Page 118: Consumer Information

    Consumer information EMU29830 YAMAHA MOTOR CORPORATION, U.S.A. FOUR-STROKE OUTBOARD MOTOR THREE-YEAR LIMITED WARRANTY...
  • Page 119 Consumer information...

  • Page 120: Important Warranty Information If You Use Your Yamaha Outside The Usa Or Canada

    Consumer information EMU29841 IMPORTANT WARRANTY INFORMATION IF YOU USE YOUR YAMAHA OUTSIDE THE USA OR CANADA...
  • Page 122 Printed in Japan January 2010–0.1 × 1 ! Printed on recycled paper...

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