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Maintenance

Twin engines

EMU29371

Disconnecting the battery

Turn off the battery cut-off switch (if
equipped) and main switch.

NOTICE:

they are left on, the electrical system
can be damaged.

[ECM01930]

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.

Clean, maintain, and store the battery ac-
cording to the manufacturer’s instruc-
tions.

1. Starboard side engine

2. Port side engine

3. Red cable
4. Black cable

5. Isolator leads with circuit protection

6. Fuse
7. Battery for starting

8. Battery for accessories

9. Negative connecting cable

ZMU05941

U6DXK0E0.book Page 70 Friday, May 13, 2011 3:08 PM

Содержание FL250G

Страница 1: ...Read this manual carefully before operating this outboard motor OWNER S MANUAL F250G FL250G 6DX 28199 K0 E0 U6DXK0E0 book Page 1 Friday May 13 2011 3 08 PM ...

Страница 2: ...l 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 U6DXK0E0 book Page 1 Friday May 13 2011 3 08 PM ...

Страница 3: ...discrepancies between your machine and this manual If there is any question concerning this manual please con sult your Yamaha dealer To ensure long product life Yamaha recom mends that you use the product and perform the specified periodic inspections and mainte nance by correctly following the instructions in the owner s manual Any damage resulting from neglect of these instructions is not cov e...

Страница 4: ...models 10 Start in gear protection 11 Engine oil requirements 11 Fuel requirements 11 Gasoline 11 Muddy or acidic water 12 Anti fouling paint 12 Motor disposal requirements 12 Emergency equipment 12 Components 13 Components diagram 13 Remote control box 14 Remote control lever 15 Free accelerator 15 Throttle friction adjuster 16 Engine shut off cord lanyard and clip 16 Main switch 17 Power trim an...

Страница 5: ...wling 39 Checking power trim and tilt system 40 Battery 41 Filling fuel 41 Operating engine 41 Sending fuel 42 Starting engine 42 Checks after starting engine 43 Cooling water 43 Warming up engine 44 Electric start models 44 Checks after engine warm up 44 Shifting 44 Stop switches 44 Shifting 44 Stopping boat 45 Stopping engine 45 Procedure 45 Trimming outboard motor 46 Adjusting trim angle Power ...

Страница 6: ... replacing anode s 67 Checking battery for electric start models 68 Connecting the battery 68 Disconnecting the battery 70 Trouble Recovery 71 Troubleshooting 71 Temporary action in emergency 74 Impact damage 74 Running single engine twin engines 74 Replacing fuse 75 Power trim and tilt will not operate 76 Water separator alert indicator blinks while cruising 76 Treatment of submerged motor 78 U6D...

Страница 7: ... all times Be sure no one is in this area before operating the power trim and tilt mech anism The power trim and tilt switches operate even when the main switch is off Keep people be away from the switches whenever working around the motor Never get under the lower unit while it is tilted even when the tilt support lever is locked Se vere injury could occur if the outboard motor accidentally falls...

Страница 8: ...zardous boating condi tions EMU33731 People in the water Always watch carefully for people in the wa ter such as swimmers skiers or divers whenever the engine is running When some one is in the water near the boat shift into neutral and stop the engine Stay away from swimming areas Swimmers can be hard to see The propeller can keep moving even when the motor is in neutral Stop the engine when a pe...

Страница 9: ...u are not sure that you can stop in time before hitting an obstacle apply throttle and turn in anoth er direction EMU33790 Weather Stay informed about the weather Check weather forecasts before boating Avoid boat ing in hazardous weather EMU33880 Passenger training Make sure at least one other passenger is trained to operate the boat in the event of an emergency EMU33890 Boating safety publication...

Страница 10: ...provided to assist you in ordering spare parts from your Yamaha dealer or for reference in case your outboard motor is sto len EMU25191 Key number If a main key switch is equipped with the mo tor the key identification number is stamped on your key as shown in the illustration Record this number in the space provided for reference in case you need a new key 1 Outboard motor serial number location ...

Страница 11: ...Read any manuals supplied with the boat Read all labels on the outboard motor and the boat If you need any additional information contact your Yamaha dealer EMU33832 Warning labels If these labels are damaged or missing contact your Yamaha dealer for replacements F250G FL250G U6DXK0E0 book Page 5 Friday May 13 2011 3 08 PM ...

Страница 12: ...h or remove electrical parts when starting or during operation 2 WARNING EWM01671 Read Owner s Manuals and labels Wear an approved personal flotation de vice PFD Attach engine shut off cord lanyard to your PFD arm or leg so the engine stops if you accidentally leave the helm which could prevent a runaway boat EMU33850 Other labels 1 2 ZMU06191 3 ZMU05710 U6DXK0E0 book Page 6 Friday May 13 2011 3 0...

Страница 13: ...arning Read Owner s Manual Hazard caused by continuous rotation Electrical hazard Remote control lever gear shift lever operat ing direction dual direction Engine start Engine cranking ZMU05696 ZMU05664 ZMU05665 ZMU05666 ZMU05667 ZMU05668 U6DXK0E0 book Page 7 Friday May 13 2011 3 08 PM ...

Страница 14: ...5500 r min Idle speed in neutral 650 50 r min Engine Type 4 stroke V Displacement 3352 0 cm Bore stroke 94 0 80 5 mm 3 70 3 17 in Ignition system TCI Spark plug NGK LFR6A 11 Spark plug gap 1 0 1 1 mm 0 039 0 043 in Control system Remote control Starting system Electric starter Starting carburetion system Electronic fuel injection Valve clearance cold engine IN 0 17 0 24 mm 0 0067 0 0094 in Valve c...

Страница 15: ...power of your out board motor s does not exceed the boats maximum horsepower rating See the boat s capacity plate or contact the manufacturer EMU33571 Mounting motor WARNING EWM01570 Improper mounting of the outboard mo tor could result in hazardous conditions such as poor handling loss of control or fire hazards Because the motor is very heavy spe cial equipment and training is required to mount ...

Страница 16: ...ap propriate 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 Generally select a larger pitch propeller for a smaller operating load and a smaller pitch propeller for a heavier load If you carry loads that vary widely se...

Страница 17: ...2 Recommended engine oil grade 1 Recommended engine oil grade 2 EMU36360 Fuel requirements EMU43940 Gasoline Use a good quality gasoline If knocking or pinging occurs use a different brand of gaso line or premium unleaded fuel NOTICE ECM01981 Do not use leaded gasoline Leaded gas oline can seriously damage the engine Recommended engine oil 4 stroke outboard motor oil Recommended engine oil grade 1...

Страница 18: ...e If necessary the boat bot tom can be coated with an anti fouling paint approved for your area to inhibit marine growth Do not use anti fouling paint which includes copper or graphite These paints can cause more rapid engine corrosion EMU36341 Motor disposal requirements Never illegally discard dump the motor Yamaha recommends consulting the dealer about discarding the motor EMU36352 Emergency eq...

Страница 19: ...e 4 Propeller 5 Cooling water inlet 6 Clamp bracket 7 Cowling lock lever s 8 Water separator 9 Power trim and tilt switch 10 Flushing device 11 Tilt support lever 12 Remote control box binnacle mount type 13 Switch panel for use with binnacle type 14 Remote control box binnacle mount type 15 Switch panel for use with binnacle type 16 Digital speedometer 17 Digital tachometer 18 Fuel management met...

Страница 20: ...witches are mounted on the remote control box ZMU06451 3 1 2 1 Tachometer unit Square type 2 Speed fuel meter unit Square type 3 Fuel management meter Square type 1 Power trim and tilt switch 2 Remote control lever 3 Free accelerator 4 Throttle friction adjuster 2 1 3 4 ZMU04572 U6DXK0E0 book Page 14 Friday May 13 2011 3 08 PM ...

Страница 21: ...or button can only be pushed when the remote control lever is in the neutral position After the button is pushed the throttle be gins to open after the remote control lever is moved at least 35 After using the free accelerator return the remote control lever to the neutral position The free accelerator button will return auto 1 Remote control lever 2 Power trim and tilt switch 3 Free accelerator 4...

Страница 22: ...p must be attached to the engine shut off switch for the engine to run The cord should be attached to a secure place on the operator s clothing or arm or leg Should the operator fall overboard or leave the helm the cord will pull out the clip stopping ignition to the engine This will prevent the boat from running away under power WARNING At tach the engine shut off cord to a secure place on your c...

Страница 23: ...the out board motor angle in relation to the transom Pushing the switch up trims the out board motor up and then tilts it up Pushing the switch down tilts the outboard motor down and trims it down When the switch is re leased the outboard motor will stop in its cur rent position For instructions on using the power trim and tilt switch see pages 46 and 48 EMU26155 Power trim and tilt switch on bott...

Страница 24: ...cur rent position For instructions on using the power trim and tilt switches see pages 46 and 48 TIP On the dual engine control the switch on the remote control grip controls both outboard motors at the same time EMU26244 Trim tab with anode WARNING EWM00840 An improperly adjusted trim tab could cause difficult steering Always test run af ter the trim tab has been installed or re placed to be sure...

Страница 25: ...n the normal running position use an addi tional support device to secure it in the tilt position EMU31421 Cowling lock lever pull up type To remove the top cowling pull up the cowling lock lever s and lift off the cowling To install the top cowling place it in its original position and then move the cowling lock lever s downward to lock it in place TIP When installing the cowling check to be sure...

Страница 26: ...r using a garden hose and tap water TIP For details on usage see page 54 EMU35563 Fuel filter Water separator This engine has a combination fuel filter water separator and associated alert system If wa ter separated from the fuel exceeds a specific volume the alert device of 6Y8 Multifunction Tachometer will activate Activation of alert device 1 Cowling lock lever s 1 Cowling lock lever s ZMU05347...

Страница 27: ...6Y8 Multifunction 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 imme diately U6DXK0E0 book Page 21 Friday May 13 2011 3 08 PM ...

Страница 28: ... to the desired using the pow er trim and tilt switch If the trim angle of your motor exceeds the trim operating range the top segment on the trim meter display will blink EMU26651 Hour meter This meter shows the number of hours the en gine has been run It can be set to show the total number of hours or the number of hours for the current trip The display can also be turned on and off To change th...

Страница 29: ...For further in formation on reading the indicator see page 32 NOTICE ECM00052 Do not continue to run the engine if the overheat alert indicator is on Serious en gine damage will occur EMU26602 Digital speedometer This gauge shows the boat speed and other information All segments of the display will light momen tarily after the main switch is turned on and will return to normal thereafter EMU36061 ...

Страница 30: ... on the face of the gauge points to trip meter clock or voltmeter EMU26691 Trip meter This gauge displays the distance the boat has traveled since the gauge was last reset The trip distance is shown in kilometers or miles depending upon the unit of measure ment selected for the speedometer To reset the trip meter to zero press the set and mode buttons at the same time The trip distance is kept in ...

Страница 31: ...splay will auto matically turn on and blink Get back to the port soon if an alert device has activated For charging the battery consult your Yamaha dealer EMU26741 Fuel management meter The fuel management meter shows the state of the fuel consumption while the engine is running All segments of the display will light momen tarily after the main switch is turned on and will return to normal thereaf...

Страница 32: ...e displays for fuel flow to the starboard en gine only for fuel flow to the port engine only or for total fuel flow both engines EMU36090 Fuel consumption meter Fuel econo my meter Twin engine speed syn chronizer The display shows either the fuel consump tion meter the fuel economy meter or the twin engine synchronizer To change the display press the mode button repeatedly until the indicator on t...

Страница 33: ...Individual engines may slightly vary in their fuel consumption due to manufacturing variations These variations can be even greater if the engines are of different year models In addition variations in propellers even of the same basic dimensions of the same design can also cause a slight varia tion in fuel consumption EMU26782 Twin engine speed synchronizer This gauge displays the difference in e...

Страница 34: ...s The tachometer shows the engine revolutions per minute It has functions of trim meter ad justing trolling speed cooling water engine temperature display battery voltage display total hour trip hour display oil pressure dis play water detection alert engine trouble alert and periodic maintenance notification If the cooling water pressure sensor is installed the unit can also show the cooling wate...

Страница 35: ...t continue to run the engine if the low oil pressure alert device has activated Serious engine damage will occur EMU36221 Overheat alert If the engine temperature rises too high while cruising the overheat alert indicator will start to blink The engine speed will automatically decrease to about 2000 r min Stop the engine immediately if the buzzer sounds and the overheat alert device has ac tivated...

Страница 36: ...fuel consumption display fuel economy display fuel flow display and system voltage display The chosen display is selected by us ing the set and mode buttons as described in this section If the speed sen sor is installed the unit can also show the trip display However even if the speed sensor is not installed the trip display can be shown by connecting an optional sensor to the unit In addition if ...

Страница 37: ...n see the operation manual origi nally supplied with the meter After the main switch is first turned on all the displays come on as a test After a few sec onds the gauge will change to normal opera tion For more information see the operation man ual originally supplied with the meter 1 Set button 2 Mode button 1 Speedometer 2 Fuel meter 3 Multifunction display 2 1 ZMU05432 1 2 3 ZMU05433 1 Set but...

Страница 38: ...erged Check the cooling water inlet for clogging Dual engine drive users If the overheat alert system of one engine ac tivates the engine will slow down To switch off the alert activation on the engine not affect ed by overheating turn off the main switch of the engine overheating If the alert system has activated stop the engine and tilt the out board motor up to check the cooling water in let fo...

Страница 39: ...t switch off consult your Yamaha dealer Twin engine drive users If the low oil pressure alert system of one en gine activates both engines will slow down and the buzzer will sound To switch off the alert activation on the engine not affected by low oil pressure turn off the main switch of the engine with the low oil pressure ZMU01828 ZMU04583 OFF START ON ON OFF START ZMU05827 U6DXK0E0 book Page 3...

Страница 40: ...gine boats mount the outboard motor on the cen terline keel line of the boat For twin engine boats mount the outboard motors equidistant from the centerline Consult your Yamaha dealer or boat manufacturer for further infor mation on determining the proper mounting location EMU26933 Mounting height boat bottom The mounting height of your outboard motor affects its efficiency and reliability If it i...

Страница 41: ...obstructions to the smooth flow of water such as the design or condition of the boat or ac cessories such as transom ladders or depth finder transducers can create air borne water spray while the boat is cruising If the outboard motor is operat ed continuously in the presence of air borne water spray enough water could enter the engine through the air intake opening in the top cowling to cause se ...

Страница 42: ... idling rough water and crowded areas 1 For the first hour of operation Run the engine at varying speeds up to 2000 r min or approximately half throttle 2 For the second hour of operation Increase engine speed as much as nec essary to put the boat on plane but avoid full throttle operation then back off on the throttle while keeping the boat at a planing speed 3 Remaining 8 hours Run the engine at...

Страница 43: ...k for fuel leaks or gasoline fumes in the boat Check for fuel leakage from the fuel system Check the fuel tank and fuel lines for cracks swellings or other damages EMU37322 Checking the fuel filter 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 EMU36...

Страница 44: ... falls between the upper lev el mark and lower level mark Consult your Yamaha dealer if the oil level is out of specified level or if it appears milky or dirty EMU27153 Engine Check the engine and engine mounting Look for loose or damaged fasteners Check the propeller for damage Check for engine oil leaks EMU36493 Flushing device Check that the flushing device s garden hose connector is securely s...

Страница 45: ... it fits properly in the rub ber seal 5 Move the levers to lock the cowling as shown NOTICE If the top cowling is not installed correctly water spray un der the top cowling can damage the engine or the top cowling can blow off at high speeds ECM01991 After installing check the fitting of the top cowling by pushing it with both hands If the top cowling is loose have it repaired by your Yamaha deale...

Страница 46: ...t switches on the remote control and en gine bottom cowling to check that all switches work 3 Tilt the outboard motor up and check that the tilt rod and trim rods are extended completely 4 Use the tilt support lever to lock the motor in the up position Operate the tilt down switch briefly so the motor is supported by the tilt support lever 5 Check that the tilt rod and trim rods are free of corros...

Страница 47: ...is in the boat 4 Do not smoke and keep away from sparks flames static electric discharge or other sources of ignition 5 If you use a portable container to store and dispense fuel only use a locally ap proved GASOLINE container 6 Touch the fuel nozzle to the filler opening or funnel to help prevent electrostatic sparks 7 Fill the fuel tank but do not overfill WARNING Do not overfill Otherwise fuel ...

Страница 48: ...o a secure place on your clothing or your arm or leg while operating Do not attach the cord to clothing that could tear loose Do not route the cord where it could become entangled preventing it from functioning 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 ca...

Страница 49: ...mpossible 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 on wait 10 sec onds then crank the engine again ECM00192 EMU36510 Checks after starting engine EMU36523 Cooling water Check for a steady flow of water from the cool ing water pilot hole A continuous flow of water from the pilot hole indicates that the wat...

Страница 50: ...e boat is tightly moored and without applying throttle confirm that the engine shifts smoothly into forward and reverse and back to neutral EMU31721 Stop switches Confirm that turning the main switch to the off position stops the engine Confirm that removing the clip from the en gine shut off switch stops the engine Confirm that the engine cannot be started with the clip removed from the engine sh...

Страница 51: ...o damage the shift mechanism Do not shift into reverse while traveling at planing speeds Loss of control boat swamping or damage to the boat could occur The boat is not equipped with a separate braking system Water resistance stops it af ter the throttle lever is moved back to idle The stopping distance varies depending on gross weight water surface conditions and wind di rection EMU27821 Stopping...

Страница 52: ...on the combination of boat engine and propeller Correct trim is also af fected by variables such as the load in the boat sea conditions and running speed EMU27888 Adjusting trim angle Power trim and tilt WARNING EWM00753 Be sure all people are clear of the out board motor when adjusting the trim an gle Body parts can be crushed between the motor and the clamp bracket when the motor is trimmed or t...

Страница 53: ...to one side or the other Compen sate for this as you steer When the bow of the boat is down it is easier to accelerate from a standing start onto plane Bow Up Too much trim out puts the bow of the boat too high in the water Performance and econ omy are decreased because the hull of the boat is pushing the water and there is more air drag Excessive trim out can also cause the propeller to ventilate...

Страница 54: ...o reduce salt cor rosion WARNING EWM01543 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 NOTICE ECM00991 Before tilting the outboard motor follow the procedure under Stopping engine in this chapter Never tilt the outboard mo...

Страница 55: ...otor could shake loose from the tilt support and fall If the motor cannot be trail ered in the normal running position use an additional support device to secure it in the tilt position For more detailed information see page 52 ECM01641 4 Once the outboard motor is supported with the tilt support lever press the power trim and tilt switch down to retract the trim rods NOTICE Make sure that the tri...

Страница 56: ...an be tilted up partially to allow operation in shallow water NOTICE ECM01490 If the engine speed is suddenly in creased when the outboard motor is par tially tilted up the power trim and tilt 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 ...

Страница 57: ...own EMU28195 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 Also rinse the outside of the outboard motor with fresh wa ter Cruising in muddy turbid or acidic water Yamaha strongly recommends that you use the optional chromium plated water pump kit see page 12 if you use the ou...

Страница 58: ...If there is insufficient road clearance in this po sition then trailer the outboard motor in the tilt position using a motor support device such as a transom saver bar Consult your Yamaha dealer for further details When the outboard motor is tilted prolonged time for mooring or trailering the boat close the fuel valve EMU30041 Storing outboard motor When storing your Yamaha outboard motor for prol...

Страница 59: ...water Either the engine water pump will be damaged or the engine will be damaged from overheating Be fore starting the engine be sure to supply water to the cooling water pas sages Avoid running the outboard motor at high speed while on the flushing attachment otherwise over heating could occur ECM02000 3 Cooling system flushing is essential to prevent the cooling system from clogging up with salt...

Страница 60: ...ean engine oil into each cylinder Crank the engine several times manually Re install the spark plug s 6 Remove the flushing attachment EMU41320 Draining the gasoline from the vapor sep arator Gasoline in the vapor separator must be drained before storing the outboard motor Have a Yamaha dealer drain the gasoline from the vapor separator EMU31393 Washing the outboard motor TIP This procedure is per...

Страница 61: ...r onto the fitting on the bottom cowling Tighten the connector securely NOTICE Do not leave the garden hose connector loose on the bottom cowling fitting or let the hose hang free during normal operation Water will leak out of the connector instead of cooling the en gine which can cause serious over heating Be sure the connector is tightened securely on the fitting after flushing the engine ECM005...

Страница 62: ...ool before handling hot parts or fluids Always completely reassemble the mo tor before operation EMU28511 Replacement parts If replacement parts are necessary use only genuine Yamaha parts or parts of equivalent design and quality Any part of inferior quality may malfunction and the resulting loss of control could endanger the operator and pas sengers Yamaha genuine parts and acces sories are avai...

Страница 63: ... The symbol indicates the check ups which you may carry out yourself The symbol indicates work to be carried out by your Yamaha dealer Item Actions Initial Every 20 hours 3 months 100 hours 1 year 300 hours 3 years 500 hours 5 years Anode s external Inspection or replace ment as necessary Anode s cylinder head thermostat cov er Inspection or replace ment as necessary Anodes exhaust cover cooling w...

Страница 64: ...r propeller nut cotter pin Inspection or replace ment as necessary PCV Pressure Con trol Valve Inspection or replace ment as necessary Shift link shift cable Inspection adjustment or replacement as nec essary Spark plug s Inspection or replace ment as necessary Spark plug caps spark plug wires Inspection or replace ment as necessary Water from the cooling water pilot hole Inspection Throttle link ...

Страница 65: ...tch stop switch choke switch Inspection or replace ment as necessary Wire harness connec tions wire coupler con nections Inspection or replace ment as necessary Yamaha Meter gauge Inspection Item Actions Every 1000 hours Exhaust guide exhaust manifold Inspection or replace ment as necessary Timing belt Replacement Item Actions Initial Every 20 hours 3 months 100 hours 1 year 300 hours 3 years 500 ...

Страница 66: ...Maintenance 60 EMU28943 Greasing Yamaha grease A water resistant grease Yamaha grease D corrosion resistant grease for propeller shaft F250G FL250G U6DXK0E0 book Page 60 Friday May 13 2011 3 08 PM ...

Страница 67: ...re securing the ignition coil and then remove the ignition coil Do not use any tools to remove or in stall the ignition coil otherwise the igni tion coil coupler may get damaged 3 Remove the spark plug If electrode ero sion becomes excessive or if carbon and other deposits are excessive you should replace the spark plug with another of the correct type WARNING When remov ing or installing a spark ...

Страница 68: ...e a diagnostic ta chometer for this procedure Results may vary depending on whether testing is conduct ed with the flushing attachment in a test tank or with the outboard motor in the water 1 Start the engine and allow it to warm up fully in neutral until it is running smoothly 2 Once the engine has warmed up verify whether the idle speed is set to specifica tion For idle speed specifications see ...

Страница 69: ... above the upper level mark drain until the level meets the speci fied capacity ECM01850 7 Leave the outboard motor for 5 10 min utes 8 Remove oil dipstick and wipe it clean 9 Insert the dipstick and remove it again Be sure to completely insert the dipstick into the dipstick guide otherwise the oil level measurement will be incorrect 10 Recheck the oil level using the dipstick to be sure the level...

Страница 70: ...ing EMU29114 Inspecting wiring and connectors Inspect that each connector is engaged se curely Inspect that each ground lead is properly secured EMU29174 Checking propeller WARNING EWM01881 You could be seriously injured if the en gine accidentally starts when you are near the propeller Before inspecting remov ing or installing the propeller place the shift control in neutral turn the main switch ...

Страница 71: ...EWM01890 3 Remove the propeller washer if equipped and thrust washer EMU30672 Installing propeller EMU29244 Spline models WARNING EWM00770 On counter rotation models be sure to use a propeller intended for counterclock wise rotation These propellers are identi fied with the letter L after the size indication on the propeller Otherwise the boat could move in the opposite direction from that expecte...

Страница 72: ... You could be severely injured if the outboard motor falls on you Never get under the lower unit while it is tilted even when the tilt support lever or knob is locked Severe injury could oc cur if the outboard motor accidentally falls 1 Tilt the outboard motor so that the gear oil drain screw is at the lowest point possi ble 2 Place a suitable container under the gear case 3 Remove the gear oil dr...

Страница 73: ...ug 7 Put a new gasket on the gear oil drain screw Insert and tighten the gear oil drain screw EMU29314 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 Yamaha dealer for replacement of external anodes NOTICE ECM00720 Do not paint anodes as this ...

Страница 74: ...er ies but you should always refer to the battery manufacturer s instructions NOTICE ECM01920 A poorly maintained battery will quickly deteriorate 1 Check the electrolyte level 2 Check the battery s charge If your boat is equipped with the digital speedometer the voltmeter and low battery alert func tions will help you monitor the battery s charge If the battery needs charging consult your Yamaha ...

Страница 75: ...l not start the en gine Connecting an accessory battery optional If connecting an accessory battery consult your Yamaha dealer about correct wiring It is recommendable to install the fuse to the isola tor lead as shown in the illustration For the fuse size be sure to follow local regulations For example for USA the ABYC rules E 11 should be observed Single engine 1 Red cable 2 Black cable 3 Batter...

Страница 76: ... first to avoid a short circuit and damage to the electrical system ECM01940 3 Disconnect the positive cable s and re move the battery from the boat 4 Clean maintain and store the battery ac cording to the manufacturer s instruc tions 1 Starboard side engine 2 Port side engine 3 Red cable 4 Black cable 5 Isolator leads with circuit protection 6 Fuse 7 Battery for starting 8 Battery for accessories...

Страница 77: ...s shift lever in gear A Shift to neutral Engine will not start starter operates Q Is fuel tank empty A Fill tank with clean fresh fuel Q Is fuel contaminated or stale A Fill tank with clean fresh fuel Q Is fuel filter clogged A Clean or replace filter Q Is starting procedure incorrect A See page 42 Q Has fuel pump malfunctioned A Have serviced by a Yamaha dealer Q Are spark plug s fouled or of inc...

Страница 78: ...nt screw on fuel tank closed A Open air vent screw Q Is choke knob pulled out A Return to home position Q Is motor angle too high A Return to normal operating position Q Is carburetor clogged A Have serviced by a Yamaha dealer Q Is fuel joint connection incorrect A Connect correctly Q Is throttle valve adjustment incorrect A Have serviced by a Yamaha dealer Q Is battery cable disconnected A Connec...

Страница 79: ... with recommended type Q Are weeds or other foreign matter tangled on gear housing A Remove foreign matter and clean lower unit Q Is fuel system obstructed A Check for pinched or kinked fuel line or oth er obstructions in fuel system Q Is fuel filter clogged A Clean or replace filter Q Is fuel contaminated or stale A Fill tank with clean fresh fuel Q Is spark plug gap incorrect A Inspect and adjus...

Страница 80: ... EMU29441 Impact damage WARNING EWM00870 The outboard motor can be seriously dam aged by a collision while operating or trailering Damage could make the out board motor unsafe to operate If the outboard motor hits an object in the wa ter follow the procedure below 1 Stop the engine immediately 2 Check the control system and all compo nents for damage Also check the boat for damage 3 Whether damage...

Страница 81: ...g an incorrect fuse or a piece 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 1 Electrical cover 2 Fuse puller 3 Spare fuse 10 A 15 A 20 A 30 A 60 A 1 Electric throttle valve ECM Electronic con trol module fuse 10 A 2 Ignition coil Fuel injector Variable cam shaft timing ECM Ele...

Страница 82: ...rocedure on a hot or running engine Allow the engine to cool There will be fuel in the fuel filter Keep away from sparks cigarettes flames or other sources of ignition This procedure will allow some fuel to spill Catch fuel in a rag Wipe up any spilled fuel immediately The fuel filter must be reassembled carefully with the O ring filter cup and hoses in place Improper assembly or replacement could...

Страница 83: ...in the water in the filter cup by soaking it up with a rag 7 Firmly screw the filter cup onto the filter housing NOTICE Be careful not to twist the water detection switch lead when screwing the filter cup onto the filter housing ECM01970 8 Connect the water detection switch cou pler securely until a click is heard 9 Fasten the water detection switch lead with the holder 1 Holder 1 Water detection ...

Страница 84: ...the outboard motor after returning to port EMU33501 Treatment of submerged motor If the outboard motor is submerged immedi ately take it to a Yamaha dealer Otherwise some corrosion may begin almost immediate ly NOTICE Do not attempt to run the out board motor until it has been completely inspected ECM00401 1 Holder U6DXK0E0 book Page 78 Friday May 13 2011 3 08 PM ...

Страница 85: ...U6DXK0E0 book Page 79 Friday May 13 2011 3 08 PM ...

Страница 86: ...Printed on recycled paper Printed in Japan June 2011 0 3 1 CR U6DXK0E0 book Page 1 Friday May 13 2011 3 08 PM ...

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