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When fitting the plug, always clean the
gasket surface and use a new gasket.
Wipe off any dirt from the threads and
screw in the spark plug to the correct
torque.

NOTE:

If a torque-wrench is not available when
you are fitting a spark plug, a good esti-
mate of the correct torque is 1/4 to 1/2 a
turn past finger-tight. Have the spark plug
adjusted to the correct torque as soon as
possible with a torque-wrench.

1

Spark plug gap

2

Spark plug I.D. mark (NGK)

E

4-11

Spark plug gap:
Refer to “SPECIFICATIONS”, page 4-1.

Spark plug torque:
Refer to “SPECIFICATIONS”, page 4-1.

903022

q

w

Initial of spark

Plug wrench size

plug I.D. mark

B

21 mm (13/16 in.)

C/BK

16 mm (5/8 in.)

D

18.3 mm (23/32 in.)

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Содержание LX225A

Страница 1: ...LIT 18626 04 64 SX225A LX225A SX250A LX250A OWNER S MANUAL U S A Edition ...

Страница 2: ......

Страница 3: ...tions that must be taken to avoid damage to the outboard motor NOTE A NOTE provides key information to make procedures easier or clearer Yamaha continually seeks advance ments in product design and quality Therefore while this manual contains the most current product information available at the time of printing there may be minor discrepancies between your machine and this manual If there is any ...

Страница 4: ...E CONTENTS GENERAL INFORMATION BASIC COMPONENTS OPERATION MAINTENANCE TROUBLE RECOVERY INDEX 1 2 3 4 5 6 READ THIS OWNER S MANUAL CAREFULLY BEFORE OPERATING YOUR OUTBOARD MOTOR EMA20010 ...

Страница 5: ...r serial number 1 1 Key number 1 1 EMISSION CONTROL INFORMATION 1 2 SAFETY INFORMATION 1 3 IMPORTANT LABELS 1 5 BASIC BOATING RULES 1 6 FUELING INSTRUCTIONS 1 10 Gasoline petrol 1 10 Engine oil 1 11 BATTERY REQUIREMENT 1 12 PROPELLER SELECTION 1 12 START IN GEAR PROTECTION 1 14 1 2 3 4 5 6 ...

Страница 6: ...TIFICATION NUMBERS RECORD EMU00007 OUTBOARD MOTOR SERIAL NUMBER The outboard motor serial number is stamped on the label attached to the port side of the clamp bracket Record your outboard motor serial num ber in the spaces provided to assist you in ordering spare parts from your Yamaha dealer or for reference in case your out board motor is stolen 1 Outboard motor serial number 1 401012 YAMAHA MO...

Страница 7: ... bracket or the swivel bracket 2 Manufactured date label EMISSION CONTROL INFORMATION ENGINE FAMILY THIS ENGINE CONFORMS TO 2001 U S EPA REGULATIONS FOR MARINE SI ENGINES THIS ENGINE CONFORMS TO 2001 CALIFORNIA EMISSION REGULATIONS FOR SI MARINE ENGINES AND IS CERTIFIED TO g kw hr HC NOx ENGINE FAMILY EXHAUST EMISSION STANDARD IN CALIFORNIA REFER TO THE OWNERS MANUAL FOR MAINTENANCE SPECIFICATIONS...

Страница 8: ...lly Make sure there are no gas fumes or leaking fuel before starting the engine 8 This product emits exhaust gases which contain carbon monoxide a colorless odorless gas which may cause brain damage or death when inhaled Symptoms include nausea dizziness and drowsiness Keep cockpit and cabin areas well ventilated Avoid blocking exhaust outlets 8 Check throttle shift and steering for proper operati...

Страница 9: ...y organiza tions including the following United States Coast Guard Consumer Affairs Staff G BC Office of Boating Public and Consumer Affairs U S Coast Guard Headquarters Washington D C 20593 0001 Boating Safety Hotline 1 800 368 5647 National Marine Manufacturers Association NMMA 401 N Michigan Ave Chicago Il 60611 Marine Retailers Association of America 155 N Michigan Ave Chicago Il 60601 ...

Страница 10: ...6Keep hands hair and clothes away from flywheel 6and other rotating parts while engine is running 6A1 83625 41 WARNING Hot surface under this cover during and after operation To avoid burns do not touch finned resistor with bare hands 65L 83625 40 YAMAHA 4 ENGINE OIL ONLY WARNING 6E5 13437 43 Pour the engine oil into this oil tank not gasoline RECOMMENDED OIL YAMALUBE 2 STROKE OUTBOARD OIL or an e...

Страница 11: ...occur unless both vessels try to avoid each other If that is the case both vessels become Give Way vessels EMB40010 BASIC BOATING RULES Rules of the road Just as there are rules which apply when you are driving on streets and high ways there are waterway rules which apply when you are driving your boat These rules are used internationally and are also enforced by the United States Coast Guard and ...

Страница 12: ... run the risk of collision neither of you has the right of way Both of you should alter course to avoid an accident You should keep the other vessel on your port left 102045 side This rule doesn t apply if both of you will clear one another if you continue on your set course and speed Crossing When two power driven vessels are crossing each other s path close enough to run the risk of collision th...

Страница 13: ...nd orange boarders They signify speed zones restricted areas danger areas and general information of its way until you are clear of it Likewise if another vessel is passing you you should maintain your speed and direction so that the other vessel can steer itself around you OTHER SPECIAL SITUATIONS There are three other rules you should be aware of when driving your boat around other vessels Narro...

Страница 14: ...w old new old new LIGHTED BUOY Starboard Hand 2 4 6 Even number increasing toward head of naviga tion Leave to starboard right proceeding up stream White Light Red Light A LIGHTED SAFE WATER BUOY No number Marks midchannel pass on either side Letter has no lateral significance used for No number Topmost band red preferred Top Mark White Light White Light OR OR LIGHTED PREFERRED CHANNEL TO RB L RG ...

Страница 15: ...el tank 8 Tighten the filler cap securely after refueling 8 If you should swallow some gasoline inhale a lot of gasoline vapor or get gasoline in your eyes get immediate medical attention 8 If any gasoline spills onto your skin immediately wash with soap and water Change clothing if gasoline spills on it 8 Touch the fuel nozzle to the filler open ing or funnel to help prevent electrosta tic sparks...

Страница 16: ...t does not exceed 10 and the fuel meets minimum octane ratings Gasohol containing methanol is not recommended by Yamaha because it can cause fuel system damage or engine performance prob lems cC 8 Use only new clean gasoline which has been stored in clean containers and is not contaminated with water or foreign matter 8 Do not use leaded gasoline petrol Leaded gasoline will cause damage to the oxy...

Страница 17: ...ications If any electrical accessories are used use a second battery to power them Choose a battery with the same capacity as the one for the engine If the engine s battery voltage drops approximately 9 volts or below during operation or while starting the electric fuel pump for Electronic Fuel Injection system will not operate The engine can not be started if battery volt age is too low cC Do not...

Страница 18: ...install a propeller on your outboard that is best suited to your application NOTE At full throttle and under a maximum boat load the engine s rpm should be within the upper half of the full throttle operating range as listed in SPECIFICA TIONS on page 4 1 Select a propeller which fulfills this requirement If operating under conditions which allow the engine s rpm to rise above the maxi mum recomme...

Страница 19: ...Yamaha outboard motors or Yamaha approved remote control units are equipped with start in gear protection device s This feature permits the engine to be started only when it is Neutral Always select Neutral before starting the engine 1 14 ...

Страница 20: ...E MEMO ...

Страница 21: ...ote control 2 2 Trim tab 2 7 Power trim tilt switch 2 8 Tilt support lever 2 8 Digital tachometer 2 9 Digital speedometer 2 12 Fuel management meter 2 15 Top cowling release lever 2 19 Flushing device 2 20 WARNING SYSTEM 2 21 Overheat warning 2 21 Oil level warning Oil filter clogging warning 2 22 1 2 3 4 5 6 ...

Страница 22: ... 4 Anti cavitation plate 5 Trim tab Anode 6 Propeller 7 Cooling water inlet 8 Anode 9 Clamp bracket 0 Power trim and tilt unit q Cowling release lever w Top cowling e Cooling water pilot hole r Remote control box Side mount type t Remote control box Binnacle mount type y Switch panel For use with t u Digital tachometer i Digital speedometer o Fuel management meter p Remote oil tank May not be exac...

Страница 23: ...d by the remote control lever In addi tion the electrical switches are mounted on the remote control box å Side mount remote control box Binnacle mount remote control box ç Switch panel for use with 1 Remote control lever 2 Neutral interlock trigger 3 Neutral throttle lever 4 Free accelerator 5 Main switch 6 Engine stop lanyard switch 7 Power trim tilt switch 8 Throttle friction adjusting screw ...

Страница 24: ...utral 2 Forward 3 Reverse 4 Shift 5 Fully closed 6 Throttle 7 Fully open EMC50210 Neutral throttle lever To open the throttle without shifting into either Forward or Reverse place the remote control lever in the Neutral posi tion and lift the neutral throttle lever NOTE The neutral throttle lever will operate only when the remote control lever is in Neutral The remote control lever will operate on...

Страница 25: ...es The power trim tilt adjusts the motor angle in relation to the transom The power trim tilt switch is located on the remote control lever grip Individual engine switches are also on the control cover Pushing the switch UP trims the motor up then tilts the motor up Pressing the switch DN tilts the motor down and trims the motor down When the switch button is released the motor will stop in its cu...

Страница 26: ...at from running away under power w 8 Attach the engine stop switch lanyard to a secure place on your clothing your arm or leg while operating 8 Do not attach the lanyard to clothing that could tear loose Do not route the lanyard in such a way that it could become entangled preventing it from functioning 8 Avoid accidentally pulling the lanyard during normal operation Loss of engine power means the...

Страница 27: ...urn counterclockwise 702035 EMC81110 Free accelerator To open the throttle without shifting into either Forward or Reverse push the free accelerator button and turn the remote control lever NOTE 8 The free accelerator button can be oper ated only when the remote control lever is in the Neutral position 8 After the button is pushed the remote control lever must be moved at least 35 to begin opening...

Страница 28: ...ed to be sure steering is correct Be sure you have tightened the bolt after adjusting the trim tab 1 Trim tab 2 Bolt 3 Cap cC The trim tab also serves as an anode to protect the engine from electroche mical corrosion Never paint the trim tab as it will become ineffective as an anode E 2 7 A B q w e 603014 Boat tends to veer To the left port side To the right starboard side The rear end of trim tab...

Страница 29: ...ts current position w Use the power trim tilt switch located on the bottom engine cowling only when the boat is at a complete stop with the engine off Attempting to use the cowl ing mounted power trim tilt switch while the boat is moving could increase the risk of falling overboard and could distract the operator increasing the risk of colli sion with another boat or an obstacle NOTE Refer to the ...

Страница 30: ...icator and the overheat warning indicator 1 Tachometer 2 Trim meter 3 Hour meter 4 Oil level indicator 5 Overheat warning indicator 6 Set button 7 Mode button NOTE All segments of the display will light momentarily after the main switch is turned on and will return to normal there after EMU00136 Tachometer This meter shows the engine speed ...

Страница 31: ...0 Hour Meter This meter shows the number of hours the engine 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 8 Changing the display format Pressing the MODE button changes the display format in the following circular pattern Total hours Trip hours Display off 8 Resetting the trip hours Simultaneously...

Страница 32: ...or cC Do not operate the engine without oil Serious engine damage will occur EMU01553 Overheat Warning Indicator If the engine temperature rises too high the warning indicator will start to blink Refer to OVERHEAT WARNING for details 1 Overheat warning indicator cC Do not continue to operate the engine if a warning device has activated If neces sary refer to the TROUBLESHOOTING section in this man...

Страница 33: ...switch For speed unit 3 Selector switch For fuel sender EMD40012 DIGITAL SPEEDOMETER This meter contains the speedometer fuel meter with warning trip meter clock and voltmeter with warning 1 Speedometer 2 Fuel meter 3 Trip meter clock voltmeter 4 Warning indicator NOTE After the main switch is first turned on all portions of the meter come on as a check After a few seconds the meters will change t...

Страница 34: ...on again to start the clock NOTE The clock operates on battery power Disconnecting the battery will stop the clock Reset the clock after connecting the battery EMU01274 Trip Meter This meter displays the distance the boat has traveled since the meter was last reset Repeatedly push and release the mode button until the indicator on the face of the meter points to TRIP To reset the trip meter to 0 p...

Страница 35: ...n this manual Consult a Yamaha dealer if the problem cannot be located and corrected EMD40310 Fuel meter The fuel level is displayed by eight seg ments When all segments are showing the fuel is full cC The Yamaha fuel tank sensor is different from a conventional type sensor A wrong setting of the selector switch on the meter will give incorrect readings Consult Yamaha dealer for correct set ting N...

Страница 36: ...ngine speed synchronizer 3 Water separator warning indicator Operates only if the sensor has been installed NOTE After the main switch is first turned on all portions of the meter come on as a check After a few seconds the meters will change to normal operation Watch the meter when turning on the main switch to make sure all segments come on YAMAHA set mode P S mpg Km L gph I h ECON SYNC TTL FUEL ...

Страница 37: ...button again the meter will display fuel flow of port side engine and P indication By pressing set button again the meter will display total fuel flow NOTE 8 The meter displays gallon hour and liter depending upon operator preference Select the desired unit of measurement by setting the selector switch 1 on the back of the meter during installation 8 Fuel consumption meter and Fuel econ omy meter ...

Страница 38: ...ls air temperature and humidity cleanliness of the boat bottom engine mounting height skill of the operator and individual gasoline formulation winter or summer fuel and amount of additives 8 The Yamaha digital speedometer and fuel management meter calculates speed miles traveled and fuel econo my by water movement at the stern of the boat This distance can vary greatly from the actual distance tr...

Страница 39: ...points to SYNC 1 Port side engine speed is higher 2 Port side engine speed is slightly higher 3 Engine speed is synchronized evenly between Port and Starboard side engines 4 Starboard side engine speed is slightly higher 5 Starboard side engine speed is higher NOTE If the two engines speeds are not syn chronized while cruising they can be syn chronized by adjusting trim angle or throttle EMU01207 ...

Страница 40: ...ick 4 To make sure the cowling is locked properly push the cowling from each side If it lifts repeat step 3 cC Make sure the cowling lock connection cable is operating correctly before rein stalling the top cowling 8 When the release lever is operated both front and rear cowling hooks should be released at the same time If not adjust the cable adjuster for the rear clamps 8 Make sure the cable ope...

Страница 41: ... EMU01146 FLUSHING DEVICE This device 1 is used to clean the cooling water passages of the motor using a gar den hose and tap water NOTE Refer to Cleaning Cooling water Passages in Chapter 4 for instructions on usage ...

Страница 42: ...e other engine to slow down and the buzzer to sound For the other engine the warning system can be released by shifting the remote control lever into the neutral 2 21 EMD80010 WARNING SYSTEM cC Do not continue to operate the engine if the warning device has activated Consult your Yamaha dealer if the problem can not be located and corrected 701054 703026 OFF START OFF START ON ON 605015 Warning de...

Страница 43: ...for oil filter clogging is simi lar to the warnings for low oil level and overheating For easy troubleshooting it is advisable to check for engine overheating first then oil level and finally oil filter clogging 1 Oil filter 2 22 001054 OFF START OFF START ON ON 213022 q 905012 q Warning device Tiller Remote activation control control model model The engine speed will automatically 1 decrease to a...

Страница 44: ...E MEMO ...

Страница 45: ...3 8 Operation after a long period of storage 3 9 BREAKING IN RUNNING IN ENGINE 3 10 STARTING ENGINE 3 12 WARMING UP ENGINE 3 15 SHIFTING 3 16 Forward 3 16 Reverse 3 16 STOPPING ENGINE 3 17 TRIMMING OUTBOARD MOTOR 3 18 Adjusting trim angle 3 19 TILTING UP DOWN 3 21 CRUISING IN OTHER CONDITIONS 3 23 Cruising in salt water 3 23 Cruising in turbid water 3 23 1 2 3 4 5 6 ...

Страница 46: ...orne water spray while the boat is cruising Severe engine damage may result if the motor is operated continuously in the presence of airborne water spray NOTE During water testing check the buoyancy of the boat at rest with its maximum load Check that the static water level on the exhaust housing is low enough to pre vent water entry into the powerhead when water rises due to waves when the outboa...

Страница 47: ... and the specific boat motor com bination 8 Your dealer or other person experi enced in proper rigging should mount the motor If you are mounting the motor yourself you should be trained by an experienced person permanent mounted type 8 Your dealer or other person experi enced in proper outboard motor mounting should show you how to mount your motor portable type Mount the outboard motor on the ce...

Страница 48: ... mounting height is too high cavitation tends to occur thus reducing the propulsion and if the pro peller tips cut the air the engine speed will rise abnormally and cause the engine to overheat If the mounting height is too low the water resistance will increase and thereby reduce engine efficiency Mount the engine so that the anti cavita tion plate is in alignment with the bottom of the boat NOTE...

Страница 49: ... gasoline has changed the amount of additives such as aromatics and oxy genates has increased These additives are important for the engines in passen ger cars but they can have detrimental effects in marine engines because of increased deposits in the combustion chamber When enough deposits collect piston rings begin sticking Performance drops and engine wear increases dramati cally While many add...

Страница 50: ...he engine oil into the engine oil tank proceed as follows w Do not add gasoline Petrol into the oil tank Fire or explosion could result E 3 5 ON START OFF 701024 ON START OFF 701052 Engine oil tank capacity Refer to SPECIFICATION page 4 1 EMF34210 Procedure When remote oil tank is used Pour oil into the remote oil tank and turn the main switch to ON and the YAMA HA PRECISION BLEND SYSTEM automat i...

Страница 51: ...ted for the first time or stored for a period of time a min imum of 5 liters 5 3 US qt 4 4 Imp qt of oil should be kept in the remote oil tank Otherwise the oil feed pump chamber will not be filled with oil and no oil will be supplied ...

Страница 52: ... 0 26 Imp qt or less More than 300 cm3 0 32 US qt 0 26 Imp qt 300 cm3 0 32 US qt 0 26 Imp qt or less More than 1 500 cm3 1 6 US qt 1 31 Imp qt More than 1 500 cm3 1 6 US qt 1 31 Imp qt 1 500 cm3 1 6 US qt 1 31 Imp qt or less No refilling necessary Add oil refer to oil filling Check oil filter for clog ging Check battery cable connection Buzzer will sound Engine speed is auto matically reduced to a...

Страница 53: ...Oil 8 Check to be sure you have plenty of oil for your trip Controls 8 Check throttle shift and steering for prop er operation before starting the engine 8 The controls should work smoothly without binding or unusual free play 8 Look for loose or damaged connec tions 8 Check operation of the starter and stop switches when the outboard moter is in the water Engine 8 Check the engine and engine moun...

Страница 54: ...lywheel and other rotating parts while engine is running 3 Watch for oil flowing through the oil feed pipes After any air in the oil lines has been expelled YAMAHA PRECISION BLEND SYSTEM should supply oil normally If no oil has begun flowing after 10 minutes of idling consult your Yamaha dealer cC 8 When operating the engine after a long period of storage be sure to take the above steps otherwise ...

Страница 55: ...lend System 8 After break in running in use gaso line petrol only If premix fuel is used continually the oxygen sensor for Electronic Fuel Injection system could be damaged cC Make sure to mix gasoline petrol and oil completely otherwise your outboard motor may be damaged E 3 10 Mixing ratio 50 1 Gasoline Petrol 1 L 0 26 US gal 0 22 Imp gal 12 L 3 2 US gal 2 6 Imp gal 14 L 3 7 US gal 3 1 Imp gal 2...

Страница 56: ...Accelerate at full throttle onto plane then reduce engine speed to three quarter throttle approximately 4 000 r min Vary engine speed occasional ly Run at full throttle for one minute then allow about 10 minutes of opera tion at three quarter throttle or less to let the engine cool 4 Third through tenth hours Avoid operating at full throttle for more than 5 minutes at a time Let the engine cool be...

Страница 57: ...away from open flames and sparks while loosening the air vent screw 8 This product emits exhaust gases which contain carbon monoxide a col orless odorless gas which may cause brain damage or death when inhaled Symptoms include nausea dizziness and drowsiness Keep cockpit and cabin areas well ventilated Avoid blocking exhaust outlets 1 If there is an air vent screw on the fuel tank cap loosen it 2 ...

Страница 58: ...e lock plate on the other end of the lanyard in the engine stop switch w 8 Attach the engine stop switch lanyard to a secure place on your clothing your arm or leg while operating 8 Do not attach the lanyard to clothing that could tear loose Do not route the lanyard where it could become entan gled preventing it from functioning 8 Avoid accidentally pulling the lanyard during normal operation Loss...

Страница 59: ... Turn the main switch to START and hold it for a maximum of 5 sec onds 8 Immediately after the engine starts release the main switch to return it to ON cC 8 Do not turn the main switch to START when the engine is running 8 Do not keep the starter motor turning for more than 5 seconds The battery will rapidly become exhausted and it will be impossible for it to start the engine If the engine does n...

Страница 60: ...ntinuous flow of water from the pilot hole shows that the water pump is pumping water through the cooling pas sages If water is not flowing out of the pilot hole at all times while the engine is running do not continue to run the engine Overheating and serious damage could occur Stop the engine and check to see if the water inlet on the lower cas ing is blocked If the problem cannot be found and c...

Страница 61: ...e idles or runs at low speeds FORWARD Pull up the neutral interlock trigger If equipped and move the remote control lever quickly and firmly from Neutral to Forward REVERSE Pull up the neutral interlock trigger If equipped and move the remote control lever quickly and firmly from Neutral to Reverse w When operating in Reverse go slowly Do not open the throttle more than half Otherwise the boat may...

Страница 62: ...tely after operating at high speed is not recommended EMG41511 1 Turn the main switch to OFF NOTE The engine can also be stopped by pulling the lanyard from the engine stop switch then turning the main switch to OFF 2 Tighten the air vent screw on the fuel tank cap after stopping the engine if it is equipped 3 Remove the key if the boat will be left unattended ...

Страница 63: ...at engine and propeller Correct trim is also affected by variables such as the load in the boat sea conditions and running speed w Excessive trim for the operating condi tions either trim up or trim down can cause boat instability and can make steering the boat more difficult This increases the possibility of an accident If the boat begins to feel unstable or is hard to steer slow down and or read...

Страница 64: ...witch located on the bottom engine cowling if equipped only when the boat is at a complete stop with the engine off The outboard motor trim angle can be adjusted operating the power trim tilt switch 1 To raise the bow trim out push the switch UP To lower the bow trim in push the switch DN Make test runs with the trim set to differ ent angles to find the position that works best for your boat and o...

Страница 65: ...at is pushing the water and there is more air drag Excessive trim up can cause the propeller to ventilate which reduces performance further When trimmed out too much a boat may porpoise hop in the water which could throw the operator and pas sengers overboard EMU00283 Bow Down When the bow of the boat is down it is easier to accelerate from a standing start onto plane Too much trim in causes the b...

Страница 66: ... proce dures under STOPPING ENGINE Never tilt the motor while the engine is running Severe damage from overheating can result w Be sure all people are clear of the out board motor when adjusting the tilt angle also be careful not to pinch any body parts between the drive unit and engine bracket w Leaking fuel is a fire hazard Disconnect the fuel line or close the fuel cock if the engine will be ti...

Страница 67: ...support lever toward you and support the engine w After tilting the engine be sure to sup port it with the tilt support lever Otherwise the engine could fall back down suddenly if oil in the power trim tilt unit should lose pressure 4 Once the engine is supported with the tilt support lever push the power trim tilt switch DOWN to retract the trim rods cC Be sure to retract the trim rods complete l...

Страница 68: ...EMH60010 CRUISING IN OTHER CONDITIONS CRUISING IN SALT WATER After operating in salt water wash out the cooling water passages with fresh water to prevent them from becoming clogged up with salt deposits NOTE Refer to cooling system flushing instruc tions in TRANSPORTING AND STORING OUTBOARD MOTOR CRUISING IN TURBID WATER It is strongly recommended that the optional chromium plated water pump kit ...

Страница 69: ...4 12 Cleaning fuel filter 4 13 Adjusting idling speed 4 14 Checking water trap under engine oil tank 4 15 Replacing fuse 4 16 Checking wiring and connectors 4 16 Exhaust leakage 4 16 Water leakage 4 16 Greasing 4 17 Checking power trim and tilt system 4 18 Checking propeller 4 19 Changing gear oil 4 21 Inspecting and replacing anode 4 22 Checking battery 4 23 Checking bolts and nuts 4 26 Motor ext...

Страница 70: ... 25 2 768 30 2 237 522 242 534 9 Full throttle operating range r min 9 Maximum output kW HP 9 Idling speed in neutral r min 4 500 5 500 165 5 225 at 5 000 r min 675 725 ENGINE 9 Engine type Number of cylinder Displacement cm3 cu in Bore stroke mm in 9 Ignition system 9 Spark plug NGK Spark plug gap mm in 9 Control system 9 Starting system 9 Battery capacity V AH kc Minimum cold crank peformance Am...

Страница 71: ...62 22 1 641 25 2 768 30 2 239 527 244 538 4 500 5 500 183 9 250 at 5 000 r min 675 725 Regular unleaded gasoline P O N minimum 86 YAMALUBE 2 STROKE OUTBOARD OIL or an equivalent TC W3 certified outboard oil 1 2 1 3 1 1 10 5 11 1 9 2 18 0 19 1 15 9 YAMAHA PRECISION BLEND SYSTEM Hypoid gear oil SAE90 1 150 38 9 40 5 Forward Neutral Reverse 1 81 29 16 Power trim tilt T M Regular unleaded gasoline P O...

Страница 72: ...cC Do not use the tilt support lever knob when trailering the boat The outboard motor could shake loose from the tilt support and fall If the motor can not be trailered in the down position use an additional support device to secure it in the up position w 8 Never get under the lower unit while it is tilted even if a motor support bar is used Severe injury could occur if the outboard accidentally ...

Страница 73: ...wing procedures can be performed by you the owner with a minimum of tools cC Do not use any chemical goods contain ing Silicon Phosphorus or Lead Otherwise the oxygen sensor for Electronic Fuel Injection system could be damaged For the detail consult your Yamaha dealer to use chemical goods for storage EMK21010 Filling Fuel Tank Fill the fuel tank with fresh fuel and add one ounce of Yamaha Fuel C...

Страница 74: ... dealer cC Avoid running the outboard at high speed while on the flushing attachment or overheating could occur w 8 Do not touch or remove electrical parts when starting or during operation 8 Keep hands hair and clothes away from flywheel and other rotating parts while engine is running 3 Run the engine at a fast idle for 10 15 minutes 4 Just prior to turning off the engine quickly spray Yamaha St...

Страница 75: ...level warning section 4 Change the lower unit oil Refer to CHANGING GEAR OIL Inspect the oil for the presence of water which indi cates a leaky seal Seal replacement should be performed by an authorized Yamaha dealership prior to use 5 Grease all grease fittings Refer to GREASING EMK27110 Cleaning and Anti corrosion Measure 1 Wash down the exterior of the outboard with fresh water and dry off comp...

Страница 76: ...Ventilate when charging or using in a closed space Always wear eye protection when working near batteries KEEP OUT OF REACH OF CHILDREN NOTE Batteries vary among manufacturers Therefore the following procedures may not always apply Consult your battery manufacturer s instructions 1 Disconnect and remove the battery from the boat Always disconnect the black negative lead first to prevent the risk o...

Страница 77: ...aha dealer for owners who have the mechanical skills tools and other equipment necessary to perform maintenance not covered by this owner s manual EMK33011 REPLACEMENT PARTS If replacement parts are necessary use only genuine Yamaha parts or equiva lents of the same type and of equivalent strength and materials Any part of inferi or quality may malfunction and the resulting loss of control could e...

Страница 78: ...27 Cooling water passage Cleaning 4 5 4 27 Propeller and cotter pin Inspection Replacement 4 19 Battery Inspection every 4 23 month Throttle pick up timing Inspection Adjustment 1 Bolts and nuts Retightening 4 26 Oil tank water drain Cleaning 4 15 Oil pump Inspection Adjustment 1 Power trim tilt unit Inspection 4 18 Power trim tilt operation Inspection 4 18 Exhaust leakage Inspection 4 16 Water le...

Страница 79: ...ould indicate an intake air leak or carburetion problem in that cylinder Do not attempt to diagnose any problems yourself Instead take the outboard motor to a Yamaha dealer You should periodically remove and inspect the spark plug because heat and deposits will cause the spark plug to slowly break down and erode If electrode erosion becomes excessive or if carbon and other deposits are excessive y...

Страница 80: ...ug a good esti mate of the correct torque is 1 4 to 1 2 a turn past finger tight Have the spark plug adjusted to the correct torque as soon as possible with a torque wrench 1 Spark plug gap 2 Spark plug I D mark NGK E 4 11 Spark plug gap Refer to SPECIFICATIONS page 4 1 Spark plug torque Refer to SPECIFICATIONS page 4 1 903022 q w Initial of spark Plug wrench size plug I D mark B 21 mm 13 16 in C ...

Страница 81: ...m is found it should be repaired immediately by Yamaha dealer or other qualified mechan ic Checking points 8 Fuel system parts leakage 8 Fuel hose joint leakage 8 Fuel hose cracks or other damage 8 Fuel connector leakage w Leaking fuel can result in fire or explo sion 8 Check for fuel leakage regularly 8 If any fuel leakage is found the fuel system must be repaired by a qualified mechanic Improper...

Страница 82: ...st be reassembled carefully with O ring filter cup and hoses in place Improper assembly can result in a fuel leak which could result in a fire or explosion hazard To clean the fuel filter 1 Loosen and remove the locking tab bolt and tab Slightly loosen the filter cup ring nut 1 Locking tab 2 Remove the filter cup catching any spilled fuel in a rag 3 Remove the filter element and wash it in solvent...

Страница 83: ...2 O ring 3 Filter cap 4 Ring nut 5 Filter housing NOTE If any water is in the fuel the red ring in the fuel filter unit will float If so remove the cup and drain the water EMK54110 ADJUSTING IDLING SPEED w 8 Do not touch or remove electrical parts when starting or during operation 8 Keep hands hair and clothes away from flywheel and other rotating parts while engine is running cC This procedure mu...

Страница 84: ...the idling speed and turning it counter clockwise to decrease the idling speed NOTE Correct idling speed adjustment is only possible if the engine is fully warmed up If not warmed up fully the speed setting will tend to be too high If you have difficulty obtaining the speci fied idle consult a Yamaha dealer or other qualified mechanic 1 Throttle stop screw EMK56010 CHECKING WATER TRAP UNDER ENGINE...

Страница 85: ... and a fire hazard NOTE If the new fuse blows again immediately consult a Yamaha dealer 1 Fuse holder 2 Fuse 80A 2 20A EMK78010 CHECKING WIRING AND CONNECTORS 1 Check that each grounding wire is properly secured 2 Check that each connector is engaged securely EXHAUST LEAKAGE Start the engine and check that no exhaust leaks from the joints between the exhaust cover cylinder head and crank case WATE...

Страница 86: ...E 4 17 EMU00366 GREASING Yamaha marine grease Water resistant grease ...

Страница 87: ...t the tilt rod and trim rods are pushed out 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 the tilt support lever 5 Check that the tilt rod and trim rods are free of corrosion or other flaws 6 Activate the tilt down switch until the trim rods have gone completely into the cylinders 7 Activate the trim up s...

Страница 88: ... if your boat has one 8 Do not use your hand to hold the pro peller when loosening or tightening the propeller nut Put a wood block between the cavitation plate and the propeller to prevent the propeller from turning 1 Check each of the propeller blades for wear erosion from cavitation or ven tilation or other damage 2 Check the splines for wear and dam age 3 Check for fish line winding around the...

Страница 89: ...st washer before installing propeller otherwise lower case and propeller boss may be damaged 3 Tighten the propeller nut to the speci fied torque 4 Align the propeller nut with the pro peller shaft hole Insert a new cotter pin in the hole and bend the cotter pin ends NOTE When the propeller nut does not align with the propeller shaft hole after tighten ing to the specified torque then tighten it m...

Страница 90: ...injured if the outboard falls on you 2 Place a suitable container under the gearcase 3 Remove the oil drain plug NOTE The oil drain plug is magnetic Remove all metal particles from the plug before rein stalling it 4 Remove the oil level plug to allow the oil to drain completely 1 Oil level plug 2 Oil drain plug cC Inspect the used oil after it has been drained If the oil is milky water is get ting...

Страница 91: ... the oil level plug 7 Insert and tighten in the oil drain plug E 4 22 603024 405016 Gear oil capacity Refer to SPECIFICATIONS Page 4 1 601033 EMM60001 INSPECTING AND REPLACING ANODE Yamaha outboard motor is protected from corrosion by a sacrificial anode s Check the anode periodically Remove the scales from surfaces of the anode For the replacement of the anode consult a Yamaha dealer cC Do not pa...

Страница 92: ...lush with water 8 EYES Flush with water for 15 minutes and get immediate medical attention Antidote INTERNAL 8 Drink large quantities of water or milk followed by milk of magnesia beaten egg or vegetable oil Get immediate medical attention Batteries also generate explosive hydrogen gas therefore you should always follow these preventive mea sures 8 Charge batteries in a well ventilated area 8 Keep...

Страница 93: ...ays in a good state of charge Installing a voltmeter will help you monitor your battery If you will not use the boat for a month or more remove the battery from the boat and store it in a cool dark place Completely recharge the battery before using it 3 If the battery will be stored for longer than a month check the specific grav ity of the fluid at least once a month and recharge the battery when...

Страница 94: ... first Then connect the BLACK lead to the NEGATIVE terminal 8 Using a single battery Connect both red cables 1 and 2 to the terminal w Do not leave cable 2 unconnected If it accidentally contacts the NEGATIVE terminal of the battery there will be a short circuit Electrical system damage and a fire could result 1 Large red lead for starting battery 2 Small red lead for accessory battery charging 3 ...

Страница 95: ...h is desired con sult your YAMAHA dealer about correct wiring EMU01280 Disconnecting the Battery Disconnect the BLACK lead from the NEG ATIVE terminal first Then disconnect the RED lead from the POSITIVE termi nal EML40010 CHECKING BOLTS AND NUTS 1 Check that bolts securing the cylinder head and engine and the nut securing the flywheel are tightened with their specified tightening torques 2 Check ...

Страница 96: ...re right after opera tion for the most thorough flushing 1 After shutting off the engine unscrew the garden hose connector 2 from the fitting 1 on the bottom cowling 2 Screw the garden hose connector 2 onto a garden hose 3 which is con nected to a fresh water supply 3 With the engine off turn on the water tap and let the water flush through the cooling passages for about 15 minutes Turn off the wa...

Страница 97: ...cooling system flushing instructions in TRANSPORTING AND STORING OUTBOARD MOTOR EMU00412 Checking Painted Surface of Motor Check the motor for scratches nicks or flaking paint Areas with damaged paint are more likely to corrode If necessary clean and paint the areas A touch up paint is available from a Yamaha dealer EML44010 COATING THE BOAT BOTTOM A clean hull improves boat performance The boat b...

Страница 98: ...E MEMO ...

Страница 99: ...ON IN EMERGENCY 5 5 Impact damage 5 5 Running single engine 5 5 Power trim tilt will not operate 5 6 Starter will not operate 5 7 Engine fails to operate 5 9 Low oil level warning activates 5 11 Top cowling does not unlock 5 12 Treatment of submerged motor 5 13 1 2 3 4 5 6 ...

Страница 100: ...oad and repair Replace fuse with one of correct amperage 4 Have serviced by a Yamaha dealer 5 Attach lanyard 6 Shift to neutral B Engine will not start Starter operates 1 Fuel tank empty 2 Fuel contaminated or stale 3 Fuel filter clogged 4 Starting procedure incorrect 5 Fuel pump malfunctions 6 Spark plug s fouled or incorrect type 7 Spark plug cap s fitted incorrectly 8 Poor connections or damage...

Страница 101: ...tle valve adjustment incorrect 17 Battery lead disconnected 1 Inspect spark plug s Clean or replace with recommended type 2 Check for pinched or kinked fuel line or other obstructions in fuel system 3 Fill tank with clean fresh fuel 4 Clean or replace filter 5 Have serviced by a Yamaha dealer 6 Find and correct cause of warning 7 Inspect and adjust as specified 8 Check wires for wear or breaks Tig...

Страница 102: ...ged 2 Propeller pitch or diameter incorrect 3 Trim angle incorrect 4 Motor mounted at incorrect height on transom 5 Warning system activated 6 Boat bottom fouled with marine growth 7 Spark plug s fouled or incorrect type 8 Weeds or other foreign matter tangled on gear housing 9 Fuel system obstructed 10 Fuel filter clogged 11 Fuel contaminated or stale 12 Spark plug gap incorrect 1 Have propeller ...

Страница 103: ...iced by a Yamaha dealer 15 Check and replace oil with specified type 16 Have serviced by a Yamaha dealer 17 Open the air vent screw 18 Have serviced by a Yamaha dealer 19 Connect correctly 20 Inspect spark plug and replace it with recommended type 21 Have serviced by a Yamaha dealer E Engine power loss F Engine vibrates excessively 1 Propeller damaged 2 Propeller shaft damaged 3 Weeds or other for...

Страница 104: ...mage is found or not found go back to a nearest harbor slowly and carefully 4 Have a Yamaha dealer inspection of the outboard motor before operating it again 102043 EMU00418 RUNNING SINGLE ENGINE Using only one of the engines in case of an emergency be sure to keep the unused one tilted up and operate the other engine at low speed cC If the boat is operated with one engine in the water but not run...

Страница 105: ...the power tilt because of a dis charged battery or a failure with the power tilt unit the engine can be tilted manually 1 Manual valve screw EMU00421 1 Loosen the manual valve screw coun terclockwise until it stops 2 Put the engine in the desired position then tighten the manual valve screw clockwise ...

Страница 106: ...ce does not oper ate Make sure the transmission is in neutral Otherwise the boat could unexpectedly start to move which could result in an accident 8 Be sure no one is standing behind you when pulling the starter rope It could whip behind you and injure someone 8 An unguarded rotating flywheel is very dangerous Keep loose clothing and other objects away when starting the engine Use the emergency s...

Страница 107: ...eral times to inject some fuel into the combustion cham bers then put the switch in the ON position NOTE If the engine will not start with this proce dure refer to ENGINE FAILS TO OPER ATE 5 To start the engine with emergency starter rope insert the knotted end of the rope into the notch in the flywheel rotor and wind the rope several turns clockwise Then give a strong pull straight out to crank t...

Страница 108: ...s procedure w When the emergency circuit is used the engine may run faster than normal at idling and low speeds Be prepared slightly increased speeds when operating at low throttle settings cC 8 This emergency circuit should only be used long enough to return to port for repairs Do not continue to operate the engine without getting repairs 8 Do not operate the engine over 3 500 r min while using t...

Страница 109: ... emer gency connector The ignition timing advance circuit of the microcomputer is bypassed 1 CDI unit 2 Yellow White cord 3 Open the throttle slightly without shifting using the neutral throttle lever or the free accelerator After the engine starts return the throttle to the original position 4 Be sure the engine is in Neutral and that the lanyard is attached to the engine stop switch The main swi...

Страница 110: ... too long too much oil will be pumped into the engine tank overflowing it Release the switch when oil reaches the upper level line on the engine oil tank 8 Do not use this emergency procedure unless the oil level warning lamps are installed and working 1 Remove the top cowling 2 Turn the main switch to the ON position 3 Lift the emergency switch to pump reserve oil in remote oil tank into the engi...

Страница 111: ...ble may be damaged or misadjusted 1 Pull the cowling release lever 1 to unlock the front lock 2 Pull the emergency cowling release wire 2 coming out of the hole on the side of the pilot hole in the bottom cowling to release the port side rear lock 3 Lift the port side of the top cowling to pull out the emergency cowling release wire 3 from the port side of the bottom cowling 4 Pull the emergency c...

Страница 112: ...o minimize engine damage 1 Thoroughly wash away mud salt seaweed etc with fresh water 2 Remove the spark plugs and face the spark plug holes downward to allow any water mud or contaminants to drain 3 Drain the fuel from the vapor separa tor 4 Feed fogging oil or engine oil through the intake manifold and spark plug holes while cranking with the emer gency starter rope 5 Take the outboard motor to ...

Страница 113: ...E EMP00010 Chapter 6 INDEX INDEX 6 1 1 2 3 4 5 6 ...

Страница 114: ...y 4 24 Cruising in other conditions 3 23 Cruising in salt water 3 23 Cruising in turbid water 3 23 D Digital speedometer 2 12 Digital tachometer 2 9 Disconnecting the battery 4 26 E Emission control information 1 2 Engine fails to operate 5 9 Engine oil 1 11 Engine stop lanyard switch 2 5 Exhaust leakage 4 16 F Filling fuel 3 4 Filling fuel and engine oil 3 4 Filling fuel tank 4 4 Filling oil 3 5 ...

Страница 115: ... 4 Running single engine 5 5 S Safety information 1 3 Shifting 3 16 Specification data 4 1 Speedometer 2 12 Start in gear protection 1 14 Starter will not operate 5 7 Starting engine 3 12 Stopping engine 3 17 Storing outboard motor 4 4 T Tachometer 2 9 Temporary action in emergency 5 5 Throttle friction adjusting screw 2 6 Tilt support lever 2 8 Tilting up down 3 21 Top cowling does not unlock 5 1...

Страница 116: ...gistration records are checked 2 Read the Limited Warranty statement which follows these instructions This warranty applies to Yamaha outboard motors sold in the United States whether purchased sepa rately or when supplied as original equipment by a boat builder The terms also apply to original equipment packages sold in Canada with coverage provided by Yamaha Motor Canada see Warranty Guide for C...

Страница 117: ...ilable in one country may not be sold or serviced in the other 6 If you need any additional information about your Yamaha or warranty coverage which your dealer cannot provide please contact us directly Yamaha Motor Corporation U S A P O Box 6555 Cypress CA 90630 Attention Customer Relations Department Telephone No 714 761 7439 Fax No 714 761 7559 Yamaha Motor Canada Ltd 480 Gordon Baker Road Toro...

Страница 118: ...tor purchased and registered for use in the United States only excluding its territo ries For warranty provisions outside the United States contact the particular country s local Yamaha distributor WARRANTY REGISTRATION To be eligible for warranty coverage the outboard motor must first be registered with Yamaha Motor Corporation U S A A warranty registration form is provided in the Owner s Manual ...

Страница 119: ...LSO HAVE OTHER RIGHTS WHICH VARY FROM STATE TO STATE YAMAHA MOTOR CORPORATION U S A Post Office Box 6555 Cypress California 90630 WARRANTY QUESTIONS AND ANSWERS Q What costs are my responsibility during the warranty period A The customer s responsibility includes all costs of normal maintenance services non warranty repairs accident and collision dam ages Q What are some examples of abnormal strai...

Страница 120: ...ation such as names addresses model engine serial number dates and receipts CHANGE OF ADDRESS The federal government requires each manufacturer of a motor vehicle to maintain a complete up to date list of all first purchasers against the possibility of a safety related defect and recall This list is complied from the purchase registrations sent to Yamaha Motor Corporation U S A by the selling deal...

Страница 121: ...ll receive service If you need more information about your warranty coverage or your Yamaha outside the U S A or Canada please contact an autho rized Yamaha dealer in your country 2 Keep a copy of your sales contract or invoice for the purchase of your Yamaha and present it if you need warranty repairs This document should show the date of purchase which is important evidence the repairing dealer ...

Страница 122: ...Printed in Japan March 2001 0 5 1 65J 28199 15 225FETO L225FETO 250BETO L250BETO E Printed on recycled paper ...

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