Yamaha LZ250B Owner'S Manual Download Page 76

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3-25

EMU00316

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 instructions
in “TRANSPORTING AND STORING OUT-
BOARD MOTOR”.

CRUISING IN TURBID WATER

It is strongly recommended that the optional
chromium-plated

water-pump

kit

installed if the outboard is to be used in tur-
bid (muddy) water conditions.

60V-9-11-3 7/31/02 1:53 PM Page 26

Summary of Contents for LZ250B

Page 1: ...VZ225B Z250B LZ250B VZ250B OWNER S MANUAL U S A Edition LIT 18626 05 27 ...

Page 2: ...INE ONLY CAUTION Gasoline containing lead can cause performance loss and Do not use gasoline mixed with oil during the break in period and engine damage 001629 or any time afterwards YAMALUBE 2 STROKE OUTBOARD OIL IS RECOMMENDED ...

Page 3: ... the fol lowing ways Q The Safety Alert Symbol means ATTENTION BECOME ALERT YOUR SAFETY IS INVOLVED w Failure to follow WARNING instructions could result in severe injury or death to the machine operator a bystander or a person inspecting or repairing the out board motor cC A CAUTION indicates special precau tions that must be taken to avoid dam age to the outboard motor NOTE A NOTE provides key i...

Page 4: ......

Page 5: ...1 2 3 4 5 6 E GENERAL INFORMATION BASIC COMPONENTS OPERATION MAINTENANCE TROUBLE RECOVERY EMU00003 CONTENTS INDEX READ THIS OWNER S MANUAL CAREFULLY BEFORE OPERATING YOUR OUTBOARD MOTOR ...

Page 6: ......

Page 7: ...Key number 1 1 EMISSION CONTROL INFORMATION 1 2 North American models 1 2 Star labels 1 3 SAFETY INFORMATION 1 4 IMPORTANT LABELS 1 6 BASIC BOATING RULES 1 8 FUELING INSTRUCTIONS 1 12 Gasoline 1 13 Engine oil 1 13 BATTERY REQUIREMENT 1 14 PROPELLER SELECTION 1 15 START IN GEAR PROTECTION 1 16 E 1 2 3 4 5 6 ...

Page 8: ...mp bracket Record your outboard motor serial number 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 EMU00008 KEY NUMBER If a main key switch is equipped with the motor the key identification number is stamped on your key as shown in the illus tration Record this number in the...

Page 9: ...nology 4 stroke HPDI DFI Manufactured date label This label is attached to the clamp bracket 2 Manufactured date label 001592 w q Manufactured 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 REFER TO THE OWNERS MANUAL FOR MAINTENANCE SPECIFICATIONS AN...

Page 10: ...onventional carbureted two stroke engines These engines are equivalent to the U S EPA s 2006 standards for marine engines Two Stars Very Low Emission The two star label identifies engines that meet the Air Resources Board s 2004 exhaust emission standards Engines meet ing these standards have 20 lower emis sions than One Star Low Emission engines Three Stars Ultra Low Emission The three star label...

Page 11: ...lways wear PFDs and everyone should wear PFDs when there are potentially hazardous boating conditions 8 Gasoline is highly flammable and its vapors are flammable and explosive Handle and store gasoline carefully 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 ...

Page 12: ...away from swimming areas 8 When a swimmer is in the water near you shift into neutral and shut off the engine 8 Be informed about boating safety Additional publications and information can be obtained from many 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 ...

Page 13: ... which could lead to an accident WARNING Be sure shift control is in neutral before starting engine except 2HP Do not touch or remove electrical parts when starting or during operation Keep hands hair and clothes away from flywheel and other rotating parts while engine is running 6A1 83625 41 1 3 ENGINE OIL ONLY WARNING 6E5 13437 43 Pour the engine oil into this oil tank not gasoline RECOMMENDED O...

Page 14: ...E 1 7 CAUTION LABELS 4 ...

Page 15: ...ened ves sel These rules determine which vessel has the right of way and what each vessel should do Stand on vessel The vessel with the right of way has the duty to continue its course and speed except to avoid an immediate collision When you maintain your direction and speed the other vessel will be able to deter mine how best to avoid you Give way vessel The vessel which does not have the right ...

Page 16: ... 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 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 cross ing each other s path close enough to run the risk of collision the vessel w...

Page 17: ...d normally be given the right of way The exceptions to this are 1 When the sailing vessel is overtaking the power driven vessel the power dri ven vessel has the right of way 2 Sailing vessels should keep clear of any fishing vessel 3 In a narrow channel a sailing vessel should not hamper the safe passage of a power driven vessel which can navi gate only in such a channel Reading buoys and other ma...

Page 18: ...head of naviga MAIN CHANNEL BUOYS 1 3 5 7 tion Leave to port left proceeding upstream LIGHTED BUOY Port Hand White Light Green Light old new 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 late...

Page 19: ...ately with dry rags 8 Do not overfill the fuel 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 ...

Page 20: ...hanol is not recommended by Yamaha because it can cause fuel system damage or engine per formance problems EMU01911 ENGINE OIL Yamalube 2 stroke outboard oil is strongly recommended for your Yamaha outboard motor If Yamalube 2 stroke out board oil is not available a 2 stroke NMMA certified TC W3 oil of equivalent quality must be used cC Serious damage could result from use of a lesser quality oil ...

Page 21: ...rform poorly or be overloaded causing electric system damage For electric start models choose a battery which meets the following specifications EMU01861 EMU01787 NOTE The engine cannot be started if battery volt age is too low Minimum cold cranking amps CCA SAE 512 amps at 18 C 0 4 F Minimum marine cranking amps MCA ABYC 675 amps at 0 C 32 F Minimum reserve capacity RC SAE 182 minutes ...

Page 22: ...ate For a greater operating load a smaller pitch propeller is more suitable as it enables the correct engine speed to be maintained Conversely a larger pitch propeller is more suitable for a smaller operating load Yamaha dealers stock a range of propellers and can advise you and install a propeller on your outboard that is best suited to your application NOTE At full throttle and under a maximum b...

Page 23: ... instructions on propeller removal and installation EMU01209 START IN GEAR PROTECTION 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 602022 14 1 2 x 17 M q w e ...

Page 24: ...E MEMO ...

Page 25: ...m tab 2 9 Power trim tilt switch 2 10 Digital tachometer 2 11 Digital speedometer 2 13 Fuel management meter 2 16 Tilt support lever 2 21 Top cowling lock levers 2 21 Flushing device 2 21 WARNING SYSTEM 2 22 Overheat warning 2 22 Oil level warning and oil filter clogging warning 2 23 Water separator warning 2 24 E 1 2 3 4 5 6 ...

Page 26: ...e 4 Propeller 5 Cooling water inlet VZ225 VZ250 6 Cooling water inlet Z250 LZ250 7 Anti cavitation plate 8 Anode 9 Clamp bracket 0 Tilt support lever q Flushing device w Power trim and tilt switch e Cooling water pilot hole May not be exactly as shown also may not be included as standard equipment on all models ...

Page 27: ... mpg Km L gph I h ECON SYNC TTL FUEL MANAGEMENT q EMU01206 MAIN COMPONENTS 1 Remote control box side mount type 2 Remote control box binnacle mount type 3 Switch panel for use with 2 4 Digital tachometer 5 Digital speedometer 6 Fuel management meter 7 Remote oil tank May not be exactly as shown also may not be included as standard equipment on all models ...

Page 28: ...ted 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 000322 w q e t y u i q r u u 001276 i ON START OFF ON START OFF t y 001277 A ...

Page 29: ...ral Interlock Trigger To shift out of Neutral the neutral interlock trigger of the remote control lever must first be pulled up EMU00100 Neutral Throttle Lever To open the throttle without shifting into either Forward or Reverse place the remote control lever in the Neutral position and lift the neutral throttle lever NOTE The neutral throttle lever will operate only when the remote control lever ...

Page 30: ...ribed below 8 OFF Electrical circuits switched off The key can be removed 8 ON Electrical circuits switched on The key cannot be removed 8 START Starter motor will turn and start engine When the key is released it returns auto matically to ON ON START OFF 701021 ON START OFF ON START OFF 001242 ...

Page 31: ...w 8 Attach the 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 loss of most steering control Also without engine p...

Page 32: ...he 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 current position NOTE 8 On the dual engine control the switch on the remote control grip controls both engines at the same time 8 Refer to the sections Adjusting Trim Angle and Tilting Up Down in Chapter 3 for ins...

Page 33: ...erator button will return automatically to its set position The remote control will then engage Forward and Reverse normally 1 Fully open 2 Fully closed 3 Free accelerator EMU01155 Throttle Friction Adjusting Screw A friction device in the remote control box provides adjustable resistance to movement of the remote control lever and can be set according to operator preference An adjust ing screw is...

Page 34: ...or replaced 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 if equipped cC The trim tab also serves as an anode to protect the engine from electrochemical corrosion Never paint the trim tab as it will become ineffective as an anode q w e 603014 A B 000625 Boat tends to veer The fin of trim tab To the left Turn to the left port...

Page 35: ...tch button is released the motor will stop in its 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 dis tract the operator increasing the risk of collision with...

Page 36: ... switch is turned on and will return to normal thereafter EMU00136 Tachometer This meter shows the engine speed EMU01689 Trim Meter This meter shows the trim angle of your out board motor NOTE 8 Memorize the trim angles that work best for your boat under different conditions Adjust the trim angle to the desired set ting by operating the power trim and tilt switch 8 If the trim angle of your motor ...

Page 37: ...8 Resetting the trip hours Simultaneously pressing the SET and MODE buttons for more than 1 second while the trip hours are displayed resets the trip counter to 0 zero NOTE The total number of hours the engine has been run cannot be reset EMU00138 Oil Level Indicator This indicator shows the engine oil level If the oil level falls below the lower limit the warning indicator will start to blink Ref...

Page 38: ...n Watch the meter when turning on the main switch to make sure all segments come on 000329 TRIP TIME BATT Km h knot mph km mile SPEED YAMAHA set mode q w e r 2 13 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 warni...

Page 39: ...at 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 press the set and mode but ton together NOTE 8 The trip distance is shown in kilometers or miles depending upon the unit of mea surement selected for the speedometer 8 The trip distance is kept in memory by battery power...

Page 40: ...er Disconnecting the battery will stop the clock Reset the clock after connecting the battery 000332 TRIP TIME BATT Km h knot mph km mile SPEED YAMAHA set mode EMU01554 Fuel meter The fuel level is indicated by eight seg ments When all segments are showing the fuel tank is full cC The Yamaha fuel tank sensor differs from conventional sensors Incorrectly setting the selector switch on the meter wil...

Page 41: ...00146 FUEL MANAGEMENT METER Optional Equipment The meter contains the fuel flow meter fuel consumption meter fuel economy meter twin engine speed synchronizer water sep arator warning indicator 1 Fuel flow meter 2 Fuel consumption Fuel economy meter Twin engine speed synchronizer 3 Water separator warning indicator Operates only if the sensor has been installed NOTE After the main switch is first ...

Page 42: ...ication By pressing set 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 ...

Page 43: ...et and mode buttons together EMU01277 Fuel Economy This meter displays the distance per liter or gallon when cruising for reference use by the operator Repeatedly push and release the mode button until the indicator on the face of the meter points to ECON NOTE If twin engines are installed on your boat the meter will display only the total fuel economy of both engines P S mp Km gph I h ECON SYNC T...

Page 44: ... Yamaha digital speedometer and fuel management meter calculates speed miles traveled and fuel economy by water movement at the stern of the boat This distance can vary greatly from the actual distance traveled because of water cur rents sea swells and the condition of the water speed sensor partially plugged or damaged 8 Individual engines may slightly vary in their fuel consumption due to manufa...

Page 45: ...rboard side engine speed is slightly higher 5 Starboard side engine speed is higher NOTE If the two engines speeds are not synchro nized while cruising they can be synchro nized by adjusting trim angle or throttle P S mpg Km L gph I h ECON SYNC TTL FUEL MANAGEMENT 000339 P S mpg Km L gph I h ECON SYNC TTL FUEL MANAGEMENT q w e r t 000340 EMU01207 Water Separator Warning Indicator If the water whic...

Page 46: ...and rear lock levers Then lift off the cowling When replacing the cowling check to be sure it fits properly in the rubber seal Then lock the cowling again by moving the levers downward 001571 001572 EMU01701 FLUSHING DEVICE This device 1 is used to clean the cooling water passages of the motor using a garden hose and tap water NOTE Refer to CLEANING COOLING WATER PASSAGES in Chapter 4 for instruct...

Page 47: ...ne speed will automatically decrease to about 2 000 r min 8 The overheat warning indicator will come on 8 The buzzer will sound If the warning system has been activated stop the engine and check the water inlet for clogging NOTE In case of dual engine drive Should the overheat warning system of one engine operate it slows down and the buzzer sounds This will cause the other engine to slow down and...

Page 48: ...crease to about 2 000 r min 8 The oil level warning indicator will light 8 The buzzer will sound If the warning system has activated stop the engine and check for the cause NOTE The warning for oil filter clogging is similar to the warnings for low oil level and over heating To make troubleshooting easier check for engine overheating first then oil level and finally oil filter clogging 1 Oil filte...

Page 49: ...ific volume the warning device will activate Activation of the warning device 8 The engine speed will automatically decrease to about 2 000 r min 8 The buzzer will sound If the warning system has activated stop the engine and inspect the fuel filter NOTE Refer to the section INSPECTING FUEL FILTER for details 701054 703026 OFF START OFF START ON ON 001575 q 1 Fuel filter cup ...

Page 50: ...E MEMO ...

Page 51: ... of storage 3 8 FILLING FUEL AND ENGINE OIL 3 9 Filling fuel 3 9 Filling oil 3 10 STARTING ENGINE 3 13 WARMING UP ENGINE 3 16 SHIFTING 3 17 Forward 3 17 Reverse 3 17 STOPPING ENGINE 3 18 TRIMMING OUTBOARD MOTOR 3 19 Adjusting trim angle 3 20 TILTING UP DOWN 3 22 CRUISING IN OTHER CONDITIONS 3 25 Cruising in salt water 3 25 Cruising in turbid water 3 25 E 1 2 3 4 5 6 ...

Page 52: ...borne 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 prevent water entry into the powerhead when water rises due to waves when the outboa...

Page 53: ...ry possible boat motor combination Proper mounting depends in part on experi ence and the specific boat motor com bination w Improper mounting of the outboard motor could result in hazardous condi tions such as poor handling loss of con trol or fire hazards Observe the follow ing 8 For permanently mounted models your dealer or other person experi enced in proper rigging should mount the motor If y...

Page 54: ...ing Height To run your boat at optimum efficiency the water resistance drag of the boat and out board motor must be made as little as pos sible The mounting height of the outboard motor greatly affects the water resistance If the mounting height is too high cavitation tends to occur thus reducing the propulsion and causing the engine to overheat If the mounting height is too low the water resis ta...

Page 55: ...e bottom of the boat NOTE 8 The optimum mounting height of the outboard motor is affected by the boat and motor combination and the desired use Test runs at different heights can help determine the opti mum mounting height Consult your Yamaha dealer or boat manufacturer for further information on determining the proper mounting height 8 For instructions on setting the trim angle of the outboard mo...

Page 56: ...reduced engine life or even severe engine dam age 8 Do not use pre mixed fuel in this engine as it may cause carbon deposits on the fuel injector thereby causing engine trouble 8 Follow the instructions for breaking in running in carefully NOTE The label pictured at left is to be left on the top cowling until the break in running in procedure has been completed and may be removed afterwards EMU011...

Page 57: ... for one minute then allow about 10 minutes of operation 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 between full throttle runs Vary engine speed occasionally 5 After the first 10 hours Operate the engine normally EMU00204 PRE OPERATION CHECKS w If any item in the pre ope...

Page 58: ...oil for your trip EMU00209 Controls 8 Check throttle shift and steering for proper operation before starting the engine 8 The controls should work smoothly with out binding or unusual free play 8 Look for loose or damaged connections 8 Check operation of the starter and stop switches when the outboard motor is in the water EMU00211 Engine 8 Check the engine and engine mounting 8 Look for loose or ...

Page 59: ...the flywheel and other rotating parts while the engine is running 2 Watch for oil flowing through the oil feed pipes After any air in the oil lines has been expelled the oil injection sys tem should supply oil normally If no oil is flowing after 10 minutes of idling consult your Yamaha dealer cC 8 Be sure to take the above steps when operating the engine after a long peri od of storage Otherwise e...

Page 60: ...s gasoline has changed the amount of additives such as aromatics and oxy genates has increased These additives are important for the engines in passenger 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 dramatically While many addi...

Page 61: ... Simply pour gasoline into the fuel tank and oil into the oil tank Convenient indicator segments indicate the status of the oil sup ply For details on reading the indicator seg ments see Oil level indicator in this chap ter To fill the engine oil tank proceed as fol lows w Do not add gasoline into the oil tank Fire or explosion could result Engine oil tank capacity See Chapter 4 Specifications ...

Page 62: ... and the bottom oil level line indicates approximately 3 8 L 1 US gal 0 8 Imp gal can be added 2 Turn on the main switch The oil injec tion system will automatically feed oil from the remote oil tank to the engine oil tank 3 Operate the engine normally cC When the engine is operated 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 ...

Page 63: ...S qt 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 FILLING OIL Check oil filter for clogging Check battery cable con nection Buzzer will sound Engine speed is automati cally reduced ...

Page 64: ...ay 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 or...

Page 65: ... 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 of engine power means the loss of most steering control A...

Page 66: ...r a maximum of 5 seconds 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 not start within 5 seconds return the main swit...

Page 67: ...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 dam age could occur Stop the engine and check to see if the water inlet on the lower casing is blocked If the problem cannot be found and c...

Page 68: ...p the neutral interlock trigger if equipped and move the remote control lever quickly and firmly from Neutral to Forward EMU00269 REVERSE w When operating in reverse go slowly Do not open the throttle more than half Otherwise the boat may become unsta ble which could result in loss of control and an accident Pull up the neutral interlock trigger if equipped and move the remote control lever quickl...

Page 69: ... a fuel cock on the boat disconnect the fuel line or close the fuel cock after stopping the engine 3 Tighten the air vent screw on the fuel tank cap after stopping the engine if it is equipped 4 Remove the key if the boat will be left unattended NOTE The engine can also be stopped by pulling the lanyard and removing the lock plate from the engine stop lanyard switch then turning the main switch to...

Page 70: ...e 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 readjust the...

Page 71: ...ower trim tilt switch 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 different angles to find the position that works best for ...

Page 72: ...n the water Performance and economy 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 which reduces performance further and the boat may porpoise hop in the water which could throw the operator and passengers overboard Bow Down When the bow of the boat is down it is eas ier to accelerate from a st...

Page 73: ...e engine is run ning 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 tilted for more than a few minutes Otherwise fuel may leak If the...

Page 74: ... tilt switch UP until the outboard has tilted up com pletely 3 Turn the tilt support lever toward you to support the engine w 8 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 and tilt unit should lose pressure 8 Never operate the engine while it is supported by the tilt support lever ...

Page 75: ...tely during mooring This protects the rods from marine growths and corrosion which could damage the power trim and tilt mechanism EMU00303 PROCEDURE FOR TILTING DOWN Power trim tilt model 1 Push the power trim tilt switch UP until the engine is supported by the tilt rod 2 Release the tilt support lever 3 Push the power trim tilt switch DN Down to lower the engine to the desired position ...

Page 76: ...esh water to prevent them from becoming clogged up with salt deposits NOTE Refer to cooling system flushing instructions in TRANSPORTING AND STORING OUT BOARD MOTOR CRUISING IN TURBID WATER It is strongly recommended that the optional chromium plated water pump kit be installed if the outboard is to be used in tur bid muddy water conditions ...

Page 77: ...13 Inspecting fuel filter 4 14 Inspecting idling speed 4 15 Checking water in engine oil tank 4 16 Checking high pressure fuel pump drive belt 4 17 Checking wiring and connectors 4 18 Exhaust leakage 4 18 Water leakage 4 18 Checking power trim and tilt system 4 19 Checking propeller 4 20 Changing gear oil 4 22 Inspecting and replacing anode s 4 23 Checking battery 4 24 Cleaning cooling water passa...

Page 78: ...VE UNIT Gear positions Gear ratio Trim and tilt system Propeller mark FUEL AND OIL Recommended fuel P O N Fuel tank capacity L US gal Imp gal Recommended engine oil Lubrication Engine oil capacity engine oil tank L US qt Imp qt remote oil tank L US qt Imp qt Recommended gear oil Gear oil capacity cm3 US oz Imp oz TIGHTENING TORQUE Spark plug N m kgf m lb ft Propeller nut N m kgf m lb ft 906 35 7 5...

Page 79: ... 3 342 203 9 93 0 82 0 3 66 3 23 TCI system BKR7EKU 0 5 0 7 0 02 0 03 Remote control Electric start 512 675 182 12 50 Electronic fuel injection Forward Neutral Reverse 1 81 29 16 Power trim and tilt TL ML Regular unleaded gasoline Minimum 86 YAMALUBE 2 STROKE OUTBOARD OIL oil injection system 1 2 1 3 1 1 10 5 11 1 9 2 Hypoid gear oil SAE90 1 000 33 8 35 2 25 2 55 18 44 54 5 51 39 83 906 35 7 568 2...

Page 80: ...consult your Yamaha dealer 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 falls 8 USE CARE when transporting fuel tank whether in a boat or car 8 DO NOT fill fuel container to maximum capacity Gasoline will expand consid erably as it warms up and can build up pressure in the fuel container This can ca...

Page 81: ...ocedures 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 Consult your Yamaha dealer for details on the use of chemical goods for stor age EMU00338 Flushing Cooling System and Fogging Engine Cooling system flushing is essential to pre vent the cooling system from clogging up with salt sand or dirt In addition fogging ...

Page 82: ...essively and almost stall 5 Remove the flushing attachment and wipe off any excess water 6 Install the silencer cover and top cowl ing Install the propeller EMU01568 Lubrication 1 Remove the spark plug s Spray Yamaha Stor Rite Engine Fogging Oil into each cylinder for 5 seconds Grease the spark plug threads and reinstall the spark plug s and torque to proper specification Refer to the sec tion CLE...

Page 83: ...se fittings Refer to the section GREASING for details EMU01904 Cleaning and Anti corrosion Measure 1 Wash down the exterior of the outboard with fresh water and dry off completely 2 Spray the engine s exterior with Yamaha Silicone Protectant Part No LUB SILCNE 13 00 cC Do not spray when the engine is run ning Also do not spray near the silencer or into the engine 3 Wax the cowling with a non abras...

Page 84: ...Ventilate when charging or using in a closed space Always wear eye protec tion when working near batteries KEEP OUT OF REACH OF CHILDREN Batteries vary among manufacturers Therefore the following procedures may not always apply Consult your battery manufac turer s instructions 1 Disconnect and remove the battery from the boat Always disconnect the black negative lead first to prevent the risk of s...

Page 85: ... the emission control system must be performed by an autho rized Yamaha marine dealership A service manual is available for purchase through a Yamaha dealer for owners who have the mechanical skills tools and other equipment necessary to perform mainte nance not covered by this owner s manual EMU00356 REPLACEMENT PARTS If replacement parts are necessary use only genuine Yamaha parts or equivalents...

Page 86: ...d motor exterior Inspection 4 29 Cooling water passages 1 Cleaning 4 4 4 28 Propeller and cotter pin Inspection Replacement 4 20 Battery Inspection Charging every 4 7 4 24 month Bolts and nuts Retightening 1 Oil tank water drain Inspection Cleaning 1 1 1 4 16 Power trim and tilt unit Inspection 4 19 Power trim and tilt operation Inspection 4 19 Exhaust leakage Inspection 4 18 Water leakage Inspect...

Page 87: ...E 4 10 EMU00366 GREASING Yamaha marine grease Water resistant grease 001599 ...

Page 88: ...air leak or carburetion problem in that cylinder Do not attempt to diagnose any problems your self 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 you should replace the s...

Page 89: ...when you are fitting a spark plug a good estimate 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 q q w 000790 Spark plug torque Refer to SPECIFICATIONS page 4 1 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 ...

Page 90: ... problem is found it should be repaired immediately by Yamaha dealer or other qualified mechanic Checkpoints 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 Improp...

Page 91: ...spilled fuel immediately 8 The fuel filter must be reassembled carefully with O ring filter cup and hoses in place Improper assembly or replacement can result in a fuel leak which could result in a fire or explo sion hazard EMU01308 NOTE If any water is in the fuel the float 7 will rise If so remove the cup and drain the water 1 Loosen and remove the locking tab bolt and tab 1 Slightly loosen the ...

Page 92: ... tight Align one of the four larger ring nut tabs into the slot of the locking tab Install the locking tab bolt and tighten 6 Run the engine and check the filter and lines for leaks EMU01905 INSPECTING IDLING SPEED w 8 Do not touch or remove electrical parts when starting or during opera tion 8 Keep hands hair and clothes away from flywheel and other rotating parts while engine is running cC This ...

Page 93: ...fications in this chap ter NOTE Correct idle speed inspection is only possi ble if the engine is fully warmed up If not warmed up fully the idle speed will measure higher than normal If you have difficulty verifying the idle speed or the idle speed requires adjustment consult your Yamaha dealer or other qualified mechanic EMU00377 CHECKING WATER IN ENGINE OIL TANK There is a trap at the bottom of ...

Page 94: ...eth 8 Excessive wear at the roots of cogs 8 Rubber portion swollen by oil 8 Belt surfaces roughened 8 Signs of wear on edges or outer surface of belt cC Consult your Yamaha dealer when replacing or adjusting the high pressure fuel pump drive belt NOTE If the high pressure fuel pump drive belt can be stretched by 10 mm 0 39 in or more by pushing with your finger in the middle between the pulleys th...

Page 95: ...h connector is engaged securely EMU00384 EXHAUST LEAKAGE Start the engine and check that no exhaust leaks from the joints between the exhaust cover cylinder head and crank case EMU00385 WATER LEAKAGE Start the engine and check that no water leaks from the joints between the exhaust cover cylinder head and crank case ...

Page 96: ... and check that the tilt rod 1 and trim rods 2 are pushed out completely 4 Use the tilt support lever 3 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 Ac...

Page 97: ...as 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 EMU00390 Propeller Checking Point 8 Check each of the propeller blades for wear erosion from cavitation or ventila tion or other damage 8 Check the splines for wear and damage 8 Check for fish line ...

Page 98: ... or Corrosion resistant grease to the pro peller shaft 2 Install the thrust washer and propeller on the propeller shaft 3 Install the spacer and washer Tighten the propeller nut to the specified torque 4 Align the propeller nut with the propeller shaft hole Insert a new cotter pin in the hole and bend the cotter pin ends NOTE If the propeller nut does not align with the propeller shaft hole after ...

Page 99: ...west point possible 2 Place a suitable container under the gear case VZ225 VZ250 3 Remove the cooling water inlet covers on both sides of the gear case Be careful not to lose the bolt and nut 4 Remove the gear oil drain screw 1 NOTE The gear oil drain screw is magnetic Remove all metal particles from the screw before installing it 5 Remove the oil level plug 2 to allow the oil to drain completely ...

Page 100: ...9 Securely install the cooling water inlet covers on both sides of the gear case using the bolt and nut removed earlier EMU01462 INSPECTING AND REPLACING ANODE S Yamaha outboard motors are protected from corrosion by sacrificial anodes Check the anodes periodically Remove scales from the surfaces of the anodes For inspection and replacement of anodes consult a Yamaha dealer cC Do not paint anodes ...

Page 101: ...TERNAL 8 SKIN Flush 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 hydro gen gas therefore you should always follow these preventive measures 8 Charge batteries in a well ventila...

Page 102: ...pure de ionized water suitable to use in batter ies 2 Keep the battery always 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...

Page 103: ... leads will dam age the electrical parts 8 Connect the RED lead first when installing the battery and disconnect the BLACK lead first when removing it Otherwise the electrical parts can be damaged 8 The electrical contacts of the battery and cables must be clean and properly connected or the battery will not start the engine Connect the RED lead to the POSITIVE terminal first Then connect the BLAC...

Page 104: ...een the ter minals of the starting battery and accessory battery See the illustrations of the wiring connections This cable must be made from wire thicker than the starting battery cable 4 w Use of smaller wire could lead to a fire 2 Battery for starting 3 Battery for accessories 4 Large red lead for starting battery 5 Small red lead for accessory battery charging optional part 6 Large black lead ...

Page 105: ...isconnect the garden hose 3 4 When flushing is complete reinstall the garden hose connector 2 on the fitting 1 on the bottom cowling Tighten the connector securely cC Do not leave the garden hose connector loose on the bottom cowling fitting or let the hose hang free during normal opera tion Water will leak out of the connector instead of cooling the engine which can cause serious overheating Be s...

Page 106: ...TBOARD 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 EMU00413 COATING THE BOAT BOTTOM A clean hull improves boat performance The boat bottom should be kept as clean of marine growths as possible If nece...

Page 107: ... TROUBLESHOOTING 5 1 TEMPORARY ACTION IN EMERGENCY 5 4 Impact damage 5 4 Running single engine 5 4 Power trim tilt will not operate 5 5 Replacing fuse 5 5 Low oil level warning activates 5 6 Treatment of submerged motor 5 7 E 1 2 3 4 5 6 ...

Page 108: ...el 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 damaged ignition wiring 9 Ignition parts faulty 10 Engine stop switch lanyard not attached 11 Engine inner parts damaged 1 Spark plug s fouled or incorrect type 2 Fuel system obst...

Page 109: ...lug and replace it with recommended type 4 Check and replace oil with specified type 5 Replace oil with fresh specified type 6 Have serviced by a Yamaha dealer 7 Have serviced by a Yamaha dealer 8 Distribute load to place boat on an even plane 9 Have serviced by a Yamaha dealer 10 Drain filter cup D Warning buzzer sounds or indicator lamp lights E Engine power loss 1 Propeller damaged 2 Propeller ...

Page 110: ...broken wires 14 Have serviced by a Yamaha dealer 15 Check and replace oil with specified type 16 Have serviced by a Yamaha dealer 17 Have serviced by a Yamaha dealer 18 Connect correctly 19 Inspect spark plug and replace it with recommended type 20 Have serviced by a Yamaha dealer 21 Have serviced by a Yamaha dealer F Engine vibrates excessively 1 Propeller damaged 2 Propeller shaft damaged 3 Weed...

Page 111: ...amage is found or not return to the nearest harbor slowly and care fully 4 Have a Yamaha dealer inspect the out board motor before operating it again 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 running water may ...

Page 112: ...valve screw clockwise 001584 t r q w e e r e 001585 t e EMU01330 REPLACING FUSE If a fuse has blown remove the electrical cover open the fuse holder and remove the fuse with a fuse puller Replace it with a spare one of proper amperage w Be sure to use the specified fuse An incorrect fuse or a piece of wire may allow excessive current flow This could cause electrical system damage and a fire hazard...

Page 113: ... 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 posi tion 3 Lift the emergency switch to pump reserve oil in remote oil tank into the engine oil tank 4 After u...

Page 114: ...ard motor to a Yamaha dealer follow the proce dure below in order to minimize engine damage EMU00449 1 Thoroughly wash away mud salt sea weed 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 separator fuel filter and fuel line 4 Feed fogging oil or engine oil through the intake manif...

Page 115: ...EMU00450 Chapter 6 INDEX INDEX 6 1 E 1 2 3 4 5 6 ...

Page 116: ...uising in salt water 3 25 Cruising in turbid water 3 25 D Digital speedometer 2 13 Digital tachometer 2 11 Disconnecting the battery 4 27 E Emission control information 1 2 Engine oil 1 13 Engine stop lanyard switch 2 6 Exhaust leakage 4 18 F Filling fuel 3 9 Filling fuel and engine oil 3 9 Filling oil 3 10 Flushing cooling system and fogging engine 4 4 Flushing device 2 21 Flushing with the flush...

Page 117: ...verse 3 17 Ring free fuel additive 3 9 Running single engine 5 4 S Safety information 1 4 Shifting 3 17 Specifications 4 1 Speedometer 2 14 Star labels 1 3 Start in gear protection 1 16 Starting engine 3 13 Stopping engine 3 18 Storing outboard motor 4 4 T Tachometer 2 11 Temporary action in emergency 5 4 Three stars ultra low emission 1 3 Throttle friction adjusting screw 2 8 Tilt support lever 2...

Page 118: ...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 separately 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 Ca...

Page 119: ...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...

Page 120: ...otor purchased and registered for use in the United States only excluding its territories 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 ...

Page 121: ...SO 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 damages Q What are some examples of abnormal strain ...

Page 122: ...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...

Page 123: ... receive service If you need more information about your warranty cov erage or your Yamaha outside the U S A or Canada please contact an authorized Yamaha dealer in your country 2 Keep a copy of your sales contract or invoice for the purchase of your Yamaha and pre sent it if you need warranty repairs This document should show the date of purchase which is important evidence the repairing dealer w...

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Page 126: ...Printed in Japan September 2002 0 9 1 60V 28199 11 Z225HETO Z250DETO LZ250DETO Z250FETO E Printed on recycled paper ...

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Yamaha LZ250B, Owner'S Manual

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