Yamaha F225C Owner'S Manual Download

Page: 1 / 92

Read this manual carefully before operating this

outboard motor.

OWNER’S MANUAL

F225C
F250A
FL250A
F225C1

6P2-28199-76-E0

U6P276E0.book Page 1 Wednesday, April 1, 2009 9:44 AM

Summary of Contents for F225C

Page 1: ...Read this manual carefully before operating this outboard motor OWNER S MANUAL F225C F250A FL250A F225C1 6P2 28199 76 E0 U6P276E0 book Page 1 Wednesday April 1 2009 9 44 AM ...

Page 2: ...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 U6P276E0 book Page 1 Wednesday April 1 2009 9 44 AM ...

Page 3: ...ween 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 ered by warranty S...

Page 4: ...le batteries 11 Propeller selection 11 Counter rotation models 12 Start in gear protection 12 Engine oil requirements 12 Fuel requirements 13 Gasoline 13 Muddy or acidic water 13 Anti fouling paint 13 Motor disposal requirements 13 Emergency equipment 13 Emission control information 14 North American models 14 Star labels 14 Components 16 Components diagram 16 Remote control box 17 Remote control ...

Page 5: ...ine 41 Fuel level 41 Remove cowling 42 Fuel system 42 Controls 42 Engine shut off cord lanyard 43 Engine oil 43 Engine 43 Flushing device 43 Install cowling 44 Checking power trim and tilt system 45 Battery 46 Filling fuel 46 Operating engine 47 Sending fuel 47 Starting engine 47 Checks after starting engine 49 Cooling water 49 Warming up engine 49 Electric start models 49 Checks after engine warm...

Page 6: ...ler 70 Changing gear oil 71 Inspecting and replacing anode s 73 Checking battery for electric start models 73 Connecting the battery 74 Disconnecting the battery 75 Trouble Recovery 77 Troubleshooting 77 Temporary action in emergency 80 Impact damage 80 Running single engine twin engines 80 Replacing fuse 81 Power trim and tilt will not operate 82 Water separator alert indicator blinks while cruis...

Page 7: ...ll 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 E...

Page 8: ...rdous 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 pers...

Page 9: ...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 publications ...

Page 10: ... illustration Record this number in the space provided for reference in case you need a new key EMU37290 EC Declaration of Conformity DoC This outboard motor conforms to certain por tions of the European Parliament directive re lating to machinery Each conformed outboard motor accompa nied with EC DoC EC DoC contains the fol lowing information Name of Engine Manufacture Model name Product code of ...

Page 11: ...General information 5 ZMU06040 U6P276E0 book Page 5 Wednesday April 1 2009 9 44 AM ...

Page 12: ...als supplied with the boat 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 F225C F250A FL250A F225C1 U6P276E0 book Page 6 Wednesday April 1 2009 9 44 AM ...

Page 13: ...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 U6P276E0 book Page 7 Wednesday April 1 2009 9...

Page 14: ...ning 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 U6P276E0 book Page 8 Wednesday April 1 2009 9 44 AM ...

Page 15: ...0 in Transom height L F225CET 516 mm 20 3 in F225CET1 516 mm 20 3 in Transom height X F250AET 643 mm 25 3 in FL250AET 643 mm 25 3 in Transom height U F250AET 770 mm 30 3 in FL250AET 770 mm 30 3 in Weight SUS L F225CET 273 0 kg 602 lb F225CET1 273 0 kg 602 lb Weight SUS X F250AET 278 0 kg 613 lb FL250AET 278 0 kg 613 lb Weight SUS U F250AET 284 0 kg 626 lb FL250AET 284 0 kg 626 lb Performance Full ...

Page 16: ...d engine oil group 2 SAE 15W 40 20W 40 20W 50 API SH SJ SL Lubrication Wet sump Total engine oil quantity oil pan capacity Without oil filter replacement 5 6 L 5 92 US qt 4 93 Imp qt With oil filter replacement 5 8 L 6 13 US qt 5 10 Imp qt Recommended gear oil Hypoid gear oil SAE 90 Gear oil quantity F225CET 0 920 L 0 972 US qt 0 810 Imp qt F225CET1 0 920 L 0 972 US qt 0 810 Imp qt F250AET 0 918 L...

Page 17: ...ts the engine from starting un less it is in neutral EMU25694 Battery requirements EMU25721 Battery specifications The engine cannot be started if battery volt age is too low EMU36290 Mounting battery Mount the battery holder securely in a dry well ventilated vibration free location in the boat WARNING Do not put flammable items or loose heavy or metal objects in the same compartment as the batter...

Page 18: ...cation on the pro peller WARNING Never use a standard propeller with a counter rotation motor or a counter rotation propeller with a stan dard motor Otherwise the boat could go in the direction opposite of that expected for example reverse instead of forward which could lead to an accident EWM01810 For instructions on propeller removal and in stallation see page 70 and 70 EMU25770 Start in gear pr...

Page 19: ...erformance The boat bottom should be kept as clean of marine growth as possible 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 rec...

Page 20: ...e SI engines See the label affixed to your engine for details EMU31560 Approval label of emission control certifi cate This label is attached to the bottom cowling New Technology 4 stroke MFI EMU25262 Manufactured date label This label is attached to the clamp bracket or the swivel bracket EMU25273 Star labels Your outboard motor is labeled with a Califor nia Air Resources Board CARB star label Se...

Page 21: ...lower emissions than One Star Low Emission engines EMU25300 Three Stars Ultra Low Emission The three star label identifies engines that meet the Air Resources Board s 2008 ex haust emission standards Engines meeting these standards have 65 lower emissions than One Star Low Emission engines EMU33861 Four Stars Super Ultra Low Emission The four star label identifies engines that meet the Air Resourc...

Page 22: ...ropeller 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 meter U6...

Page 23: ... 2 5 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 1 Power trim and tilt switch 2 Remote control lever 3 Free accelerator 4 Throttle friction adjuster 2 1 3 4 ZMU04572 U6P276E0 book Page 17 Wednesday April 1 2009 9 44 AM ...

Page 24: ...r button can only be used 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 Th...

Page 25: ...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 clo...

Page 26: ... relation to the transom Pressing the switch up trims the out board motor up and then tilts it up Pressing 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 51 and 53 EMU26153 Power trim and tilt switch on bottom engine cowling The powe...

Page 27: ...on For instructions on using the power trim and tilt switches see pages 51 and 53 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 steering is co...

Page 28: ...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 i...

Page 29: ...IP For details on usage see page 59 EMU35561 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 The water separator alert indicator of 6Y8 Multifunction Tachometer will blink 1 Cowling lo...

Page 30: ...e 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 U6P276E0 book Page 24 Wednesday April 1 2009 9 44 AM ...

Page 31: ...o 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 the ...

Page 32: ...r further in formation on reading the indicator see page 37 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 Sp...

Page 33: ...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 m...

Page 34: ...lay 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 thereafte...

Page 35: ...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 the...

Page 36: ...dividual 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 eng...

Page 37: ...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 water ...

Page 38: ...r min Stop the engine immediately if the buzzer sounds and the low oil pressure alert indicator blinks Check the engine oil quantity and re plenish oil if necessary If the alert device has activated while the appropriate engine oil quantity is maintained consult your Yamaha dealer NOTICE ECM01601 Do not continue to run the engine if the low oil pressure alert device has activated Serious engine da...

Page 39: ...ice has activated Consult your Yamaha dealer if the problem can not be located and corrected EMU36150 Water separator alert This indicator will blink if water has accumulat ed in the water separator fuel filter while cruising In such an event stop the engine im mediately and see page 80 of this manual to drain the water from the fuel filter Get back to the port soon and consult a Yamaha dealer imm...

Page 40: ...speed and has the functions of fuel meter to tal 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 connecti...

Page 41: ...e chosen display is select ed by using the set and mode buttons as described in this section In addi tion the speedometer can show the desired unit of measurement such as km h mph or knots If the speed sensor is installed the unit can also show the trip display However even if the speed sensor is not installed the trip dis play can be shown by connecting an optional sensor to the unit In addition ...

Page 42: ...is play fuel economy display and remaining fuel display The chosen display is selected by using the set and mode buttons as described in this section For more information 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...

Page 43: ...ged 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 for ...

Page 44: ...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 U6P276E0 book Page 38 ...

Page 45: ...ne 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 EMU26932 Mounting height boat bottom The mounting height of your outboard motor affects its efficiency and reliability If it is ...

Page 46: ...or 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 motor is operated contin uously in the presence of airborne water spray enough water could enter the en gine through the intake opening on the cowling to cause severe engine dam...

Page 47: ...ing 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 any...

Page 48: ...Check 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 EMU37320 Check 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 EMU3...

Page 49: ... to be sure the level 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 EMU36490 Flushing device Check that flushing device s garden hose connec...

Page 50: ...l 4 Check to be sure it fits properly in the rub ber seal 5 Move the levers to lock the cowling as shown NOTICE If the cowling is not installed correctly water spray under the cowling can damage the engine or the cowling can blow off at high speeds ECM01990 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 Yamah...

Page 51: ...or any sign of oil leaks 2 Operate each of the power trim and tilt 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...

Page 52: ...bles must be clean and proper ly connected or the battery will not start the engine Refer to the battery manufacturer s instruc tions for checks for your particular battery EMU30023 Filling fuel WARNING EWM01830 Gasoline and its vapors are highly flam mable and explosive Always refuel ac cording to this procedure to reduce the risk of fire and explosion Gasoline is poisonous and can cause in jury ...

Page 53: ... fuel cock on the boat firmly connect the fuel line to the joint or open the fuel cock 2 Squeeze the primer pump with the arrow pointing up until you feel it become firm EMU27493 Starting engine WARNING EWM01600 Before starting the engine make sure that the boat is tightly moored and that you can steer clear of any obstructions Be sure there are no swimmers in the water near you EMU27628 Electric ...

Page 54: ...alls 4 Turn the main switch to start and hold it for a maximum of 5 seconds 5 Immediately after the engine starts re lease the main switch to return it to on NOTICE Never turn the main switch to start while the en gine is running Do not keep the start er motor turning for more than 5 seconds If the starter motor is turned continuously for more than 5 sec onds the battery will be quickly dis charge...

Page 55: ...s be tween the exhaust cover cylinder head and body cylinder EMU27670 Warming up engine EMU30036 Electric start models 1 After starting the engine allow it to idle for 3 minutes to warm up to provide maxi mum operating performance and accel eration Failure to do so will shorten engine life 2 Be sure the low oil pressure alert indica tor remains off after starting the engine NOTICE If the low oil p...

Page 56: ...dle speed may be higher than normal High idle speed can prevent you from shifting back to neutral If this occurs stop the en gine shift to neutral then restart the en gine and allow it to warm up To shift out of neutral 1 Pull the neutral interlock trigger up if equipped 2 Move the remote control lever firmly and crisply forward for forward gear or back ward for reverse gear about 35 a de tent can...

Page 57: ...1 Procedure 1 Turn the main switch to off 2 Remove the key if the boat will be left un attended TIP The engine can also be stopped by pulling the cord and removing the clip from the engine shut off switch then turning the main switch to off EMU27862 Trimming outboard motor WARNING EWM00740 Excessive trim for the operating condi tions either trim up or trim down can cause boat instability and can m...

Page 58: ... 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 Adjust the outboard motor trim angle using the power trim and tilt switch To raise the bow trim out press the switch up To lower the bow trim in press the switch down Make test runs with the trim set to dif...

Page 59: ...ssengers overboard Bow Down Too much trim in causes the boat to plow through the water decreasing fuel economy and making it hard to increase speed Operat ing with excessive trim in at higher speeds also makes the boat unstable Resistance at the bow is greatly increased heightening the danger of bow steering and making opera tion difficult and dangerous TIP Depending on the type of boat the outboa...

Page 60: ...otor has tilted up completely 3 Pull the tilt support lever toward you to support the engine WARNING After tilting the outboard motor be sure to support it with the tilt support knob or tilt support lever Otherwise the out board motor could fall back down sud denly if oil in the power trim and tilt unit or in the power tilt unit loses pres sure EWM00262 NOTICE Do not use the tilt support lever or ...

Page 61: ...h and corrosion which could damage the power trim and tilt mecha nism ECM00251 EMU33121 Procedure for tilting down power trim and tilt models 1 Push the power trim and tilt switch up until the outboard motor is supported by the tilt rod and the tilt support lever be comes free 2 Release the tilt support lever 3 Push the power trim and tilt switch down to lower the outboard motor to the desired pos...

Page 62: ...ting up for and cruising in shallow water Otherwise severe damage from overheating can result EMU32922 Procedure for power trim and tilt models 1 Place the remote control lever in neutral 2 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 bottom cowling while the boat is moving or engine is on could...

Page 63: ... 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 13 if you use the outboard motor in acidic water or water with a lot of sediment in it such as muddy or turbid cloudy water Af ter operating in such water flush the cooling passages with fresh water to ...

Page 64: ...eriods of time 2 months or longer several important procedures must be performed to prevent excessive damage It is advisable to have your outboard motor ser viced by an authorized Yamaha dealer prior to storage However you the owner with a min imum of tools can perform the following pro cedures NOTICE ECM01350 To prevent problems which can be caused by oil entering the cylinder from the sump keep ...

Page 65: ...fication For information on spark plug installation see page 66 2 Change the gear oil For instructions see page 71 Inspect the oil for the presence of water that indicates a leaky seal Seal replacement should be performed by an authorized Yamaha dealer prior to use 3 Grease all grease fittings For further de tails see page 65 TIP For long term storage fogging the engine with oil is recommended Con...

Page 66: ...otor until it is completely out of the water will achieve better results EMU28460 Checking painted surface of motor Check the motor for scratches nicks or flak ing paint Areas with damaged paint are more likely to corrode If necessary clean and paint the areas A touch up paint is available from your Yamaha dealer EMU2847C Periodic maintenance WARNING EWM01871 These procedures require mechanical sk...

Page 67: ... the following types of operation on a regular basis Operating continuously at or near maxi mum engine speed rpm for many hours Operating continuously at a low engine speed rpm for many hours Operating without sufficient time for engine to warm up and cool down Frequent quick acceleration and decelera tion Frequent shifting Frequently starting and stopping the en gine s Operation that fluctuates o...

Page 68: ...e 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 wate...

Page 69: ...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 th...

Page 70: ... 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 hours 5 years U6P276E0 book Page 64 Wednesday April 1 2009 9 44 AM ...

Page 71: ...nance 65 EMU28941 Greasing Yamaha grease A water resistant grease Yamaha grease D corrosion resistant grease for propeller shaft F225C F250A FL250A F225C1 U6P276E0 book Page 65 Wednesday April 1 2009 9 44 AM ...

Page 72: ... 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 pl...

Page 73: ... 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 p...

Page 74: ...bove 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 1 Oil changer 1 Oil filler cap Recommended engine oil 4 stroke out...

Page 75: ...nge the oil more often when operating the engine under adverse conditions such as extended trolling EMU29113 Checking wiring and connectors Check that each connector is engaged se curely Check that each ground lead is properly se cured EMU29174 Checking propeller WARNING EWM01881 You could be seriously injured if the en gine accidentally starts when you are near the propeller Before inspecting rem...

Page 76: ...WM01890 3 Remove the propeller washer if equipped and thrust washer EMU30672 Installing propeller EMU29243 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 expected...

Page 77: ...urely fastened to the transom or a stable stand 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 contain...

Page 78: ... a new gasket on the oil level plug When the oil begins to flow out of the oil level plug hole insert and tighten the oil level plug 8 Put a new gasket on the gear oil drain screw Insert and tighten the gear oil drain screw 1 Oil level plug 2 Gasket 3 Cooling water inlet cover 4 Bolt 5 Gear oil drain screw 6 Nut 5 2 6 3 4 3 1 2 ZMU05487 Recommended gear oil Hypoid gear oil SAE 90 Gear oil quantity...

Page 79: ...ler for inspection and replacement of inter nal anodes attached to the power unit EMU29322 Checking battery for electric start models WARNING EWM01900 Battery electrolytic fluid is poisonous and caustic and batteries generate explosive hydrogen gas When working near the bat tery Wear protective eye gear and rubber gloves Do not smoke or bring any other source of ignition near the battery Refer to ...

Page 80: ...a fully charged battery in the holder NOTICE ECM01123 Reversal of the battery cables will damage the electrical parts 1 Make sure the main switch on applicable models is off before working on the battery 2 Connect the red battery cable to the POSITIVE terminal first Then con nect the black battery cable to the NEGA TIVE terminal 3 The electrical contacts of the battery and cables must be clean and...

Page 81: ...irst to avoid a short circuit and damage to the electrical system ECM01940 1 Isolator lead with circuit protection 2 Red cable 3 Black cable 4 Fuse 5 Battery for accessories 6 Battery for starting 7 Negative connecting cable 2 1 7 6 5 3 4 ZMU05939 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 fo...

Page 82: ...76 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 U6P276E0 book Page 76 Wednesday April 1 2009 9 44 AM ...

Page 83: ...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 47 Q Has fuel pump malfunctioned A Have serviced by a Yamaha dealer Q Are spark plug s fouled or of incor...

Page 84: ... 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 Connect ...

Page 85: ...ith 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 adjust ...

Page 86: ...am 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 Inspect the control system and all compo nents for damage Also inspect the boat for damage 3 Whether damage is found or not return to the nearest harbor slowly and careful ly 4 Have...

Page 87: ...e 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 5 A 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 Electronic control mod ule fuse 30 A 3 Main switch PTT switch fuse 20 A 4 Starter relay ...

Page 88: ...re 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 resul...

Page 89: ... Drain 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 detect...

Page 90: ...e 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 U6P276E0 book Page 84 Wednesday April 1 2009 9 44 AM ...

Page 91: ...U6P276E0 book Page 85 Wednesday April 1 2009 9 44 AM ...

Page 92: ...YAMAHA MOTOR CO LTD Printed on recycled paper Printed in Japan April 2009 0 1 1 CR U6P276E0 book Page 1 Wednesday April 1 2009 9 44 AM ...

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