Yamaha LZ300 Owner'S Manual Download Page 72

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Maintenance

EMU28522

Maintenance chart

Frequency of maintenance operations may be adjusted according to the operating condi-
tions, but the following table gives general guidelines. Refer to the sections in this chapter for
explanations of each owner-specific action.

NOTE:

When operating in salt water, turbid or muddy water, the engine should be flushed with clean

water after each use.

The “

” symbol indicates the check-ups which you may carry out yourself.

The “

” symbol indicates work to be carried out by your Yamaha dealer.

Item

Actions

Initial

Every

10 hours

(1 month)

50 hours

months)

100

hours (6
months)

200

hours (1

year)

Anode(s) (external)

Inspection / replace-
ment

Anode(s) (internal)

Inspection / replace-
ment

Battery

Inspection / charging

Cooling water pas-
sages

Cleaning

Cowling clamp

Inspection

Fuel filter (can be dis-
assembled)

Inspection / cleaning

Fuel system

Inspection

Gear oil

Change

Greasing points

Greasing

Idling speed

Inspection

PCV (Pressure Con-
trol Valve)

Inspection

Power trim and tilt unit

Inspection

Propeller and cotter pin

Inspection / replace-
ment

Shift link / shift cable

Inspection / adjustment

Thermostat

Inspection / replace-
ment

Throttle link / throttle
cable / throttle pick-up
timing

Inspection / adjustment

Throttle position sen-
sor

Inspection / adjustment

Summary of Contents for LZ300

Page 1: ...Z300 LZ300 OWNER S MANUAL 6D0 28199 17 U S A Edition LIT 18626 07 57 6D0 9 17 Hyoshi 6 7 07 1 28 PM ページ 1 ...

Page 2: ...wner s manual carefully before operating or working on your outboard motor Keep this manual onboard in a waterproof bag when boating This manual should stay with the outboard motor if it is sold 6D0 9 17 Hyoshi 6 7 07 1 28 PM ページ 2 ...

Page 3: ...motor CAUTION ECM00700 A CAUTION indicates special precautions 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 advancements in product design and quality Therefore while this manual contains the most current prod uct information available at the time of print ing there may be minor discrepan...

Page 4: ...irements 13 Fueling instructions 13 Gasoline 13 Engine oil 13 Installation requirements 14 Boat horsepower rating 14 Mounting motor 14 Remote control requirements 14 Battery requirement 14 Propeller selection 14 Start in gear protection 15 Basic components 16 Main components 16 Remote control 17 Remote control lever 18 Neutral interlock trigger 18 Neutral throttle lever 18 Free accelerator 19 Thro...

Page 5: ...ime start models 50 Shifting 50 Stopping boat 52 Stopping engine 52 Procedure 52 Trimming outboard motor 53 Adjusting trim angle Power trim and tilt 53 Adjusting boat trim 54 Tilting up and down 55 Procedure for tilting up power trim and tilt models 55 Procedure for tilting down power trim and tilt models 57 Cruising in shallow water 57 Power trim and tilt models 57 Cruising in other conditions 58...

Page 6: ...mpact damage 82 Running single engine 82 Replacing fuse 83 Power trim and tilt will not operate 83 Water separator warning indicator blinks while cruising 84 Engine fails to operate 85 Low oil level warning activates 85 Treatment of submerged motor 86 Procedure 86 Consumer information 88 Important warranty information for U S A and Canada 88 YAMAHA MOTOR CORPORATION U S A OUTBOARD MOTOR TWO YEAR L...

Page 7: ...ped with the mo tor the key identification number is stamped on your key as shown in the illustration Record this number in the space provided for reference in case you need a new key EMU25221 Emission control information EMU25230 North American models This engine conforms to U S Environmental Protection Agency EPA regulations for ma rine SI engines See the label affixed to your engine for details...

Page 8: ...Board s 2001 ex haust emission standards Engines meeting these standards have 75 lower emissions than conventional carbureted two stroke en gines These engines are equivalent to the U S EPA s 2006 standards for marine en gines EMU25290 Two Stars Very Low Emission The two star label identifies engines that meet the Air Resources Board s 2004 ex haust emission standards Engines meeting these standar...

Page 9: ...ifies engines that meet the Air Resources Board s Sterndrive and Inboard marine engine 2009 exhaust emission standards Personal Watercraft and Outboard marine engines may also comply with these standards Engines meet ing these standards have 90 lower emis sions than One Star Low Emission engines EMU25382 Important labels EMU25395 Warning labels EMU25401 Label WARNING EWM01260 Be sure shift control...

Page 10: ...o in an unexpected direction which could lead to an accident EMU25451 Label ENGINE OIL ONLY Pour the engine oil into this oil tank not gasoline RECOMMENDED OIL YAMALUBE 2 STROKE OUTBOARD OIL or an equivalent TC W3 certified ouboard oil WARNING EWM01270 Do not add gasoline to the oil tank Fire explosion could result EMU25465 Caution labels EMU30690 Label CAUTION ECM01480 USE UNLEADED STRAIGHT GASOL...

Page 11: ...it is tilt ed even when the tilt support lever is locked Severe injury could occur if the outboard mo tor accidentally falls EMU33670 Engine shut off cord Attach the engine shut off cord so that the engine stops if the operator falls overboard or leaves the helm This prevents the boat from running away under power and leaving people stranded or running over people or objects Always attach the engi...

Page 12: ...he water near the boat shift into neutral and shut off the motor Stay away from swimming areas Swimmers can be hard to see The propeller can keep moving even when the motor is in neutral Shut off the engine when a person is in the water near you EMU33750 Passengers Consult your boat manufacturer s instruc tions for details about appropriate passenger locations in your boat and be sure all pas seng...

Page 13: ...on can provide information about cours es in your area You may also want to consider an Internet based program for basic boater education The Online Boating Safety Course provided by the BoatU S Foundation is approved by the National Association of State Boating Law Administrators NASBLA and recog nized by the United States Coast Guard Most but not all states accept this course to meet their minim...

Page 14: ...Chicago IL 60601 www mraa com EMU33690 Basic boating rules Rules of the road Just as there are rules that apply when you are driving on streets and highways there are waterway rules that apply when you are driving your boat These rules are used inter nationally For USA and are also enforced by the United States Coast Guard and local agencies You should be aware of these rules and follow them whene...

Page 15: ...ou are traveling across the oth er vessel s path Overtaking you are passing or being passed by another vessel In the following illustration your boat is in the center You should give the right of way to any vessels shown in white area you are the Give Way vessel Any vessels in the shad ed area must yield to you they are the Give Way vessels Both you and the meeting vessel must alter course to avoi...

Page 16: ...not considered fishing ves sels Fishing vessels have the right of way regardless of position Fishing vessels can not however impede the passage of other vessels in narrow channels Sailing vessel right of way Sailing vessels should 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 driv en vessel has the right of w...

Page 17: ...ry or advisory information These markers are white with black letters and orange boarders They signify speed zones restrict ed areas danger areas and general infor mation Remember markings may vary by geo graphic location Always consult local boat ing authorities before driving your boat in unfamiliar waters ...

Page 18: ...Safety information 12 ZMU01708 ...

Page 19: ...rs use a different brand of gasoline or premium unleaded fuel Gasohol There are two types of gasohol gasohol con taining ethanol and that containing metha nol Gasohol containing ethanol can be used if ethanol content does not exceed 10 and the fuel meets minimum octane ratings E 85 is a fuel blend containing 85 ethanol and therefore must not be used in your outboard motor All ethanol blends contai...

Page 20: ...gine starts in gear the boat can move suddenly and unexpectedly pos sibly causing a collision or throwing passengers overboard If the engine ever starts in gear the start in gear protection device is not working correctly and you should dis continue using the outboard Contact your Yamaha dealer EMU25702 Battery requirement CAUTION ECM01061 Do not use a battery that does not meet the specified capa...

Page 21: ...opeller for a heavier load If you carry loads that vary widely chose the propeller that lets the engine run in the proper range for your maximum load but remember that you may need to reduce your throttle setting to stay within the recommended engine speed range when carrying lighter loads For instructions on propeller removal and in stallation see page 72 EMU25770 Start in gear protection Yamaha ...

Page 22: ... 7 6 5 3 4 13 12 2 11 ZMU04929 1 Top cowling 2 Top cowling lock lever s 3 Trim tab anode 4 Propeller 5 Cooling water inlet 6 Anti cavitation plate 7 Anode 8 Clamp bracket 9 Tilt support lever 10 Flushing device 11 Water separator 12 Power trim and tilt switch 13 Cooling water pilot hole 14 Remote control box side mount type 15 Remote control box binnacle mount type 16 Switch panel for use with bin...

Page 23: ...MU05429 1 Tachometer unit Square type 2 Tachometer unit Round type 3 Speedometer unit Square type 4 Speed fuel meter unit Square type 5 Speed fuel meter unit Round type 6 Fuel management meter Square type 1 Power trim and tilt switch 2 Remote control lever 3 Neutral interlock trigger 4 Neutral throttle lever 5 Main switch choke switch 6 Engine shut off switch 7 Throttle friction adjuster ...

Page 24: ...shift out of neutral first pull the neutral in terlock trigger up EMU26211 Neutral throttle lever To open the throttle without shifting into ei ther forward or reverse put the remote con trol lever in the neutral position and lift the neutral throttle lever 1 Remote control lever 2 Power trim and tilt switch 3 Free accelerator 4 Throttle friction adjuster 1 Neutral 2 Forward 3 Reverse 4 Shift 5 Fu...

Page 25: ...the free accelerator return the remote control lever to the neutral position The free accelerator button will return au tomatically to its set position The remote control will then engage forward and re verse normally EMU25971 Throttle friction adjuster A friction device provides adjustable resis tance to movement of the throttle grip or the remote control lever and can be set accord ing to operat...

Page 26: ...g that could tear loose Do not route the cord where it could become entangled pre venting it from functioning Avoid accidentally pulling the cord dur ing normal operation Loss of engine power means the loss of most steering control Also without engine power the boat could slow rapidly This could cause people and objects in the boat to be thrown forward NOTE The engine cannot be started with the cl...

Page 27: ... see pages 53 and 55 EMU26152 Power trim and tilt switch on bottom engine cowling The power trim and tilt switch is located on the side of the bottom engine cowling Press ing the switch up trims the outboard motor up and then tilts it up Pressing the switch down tilts the outboard motor down and trims it down When the switch is released the outboard motor will stop in its current position WARNING ...

Page 28: ...MU26243 Trim tab with anode The trim tab should be adjusted so that the steering control can be turned to either the right or left by applying the same amount of force WARNING EWM00840 An improperly adjusted trim tab could cause difficult steering Always test run after the trim tab has been installed or re placed to be sure steering is correct Be sure you have tightened the bolt after ad justing t...

Page 29: ...ll If the motor cannot be trail ered in the normal running position use an additional support device to secure it in the tilt position EMU26382 Top cowling lock lever pull up type To remove the engine top cowling pull up the lock lever s and lift off the cowling When installing the cowling check to be sure it fits properly in the rubber seal Then lock the cowling by moving the lever s down ward 1 ...

Page 30: ...vice The water separator warning indicator of Command Link Tachometer will blink The buzzer will sound intermittently only when the gear shift is in neutral If the warning system has activated stop the engine and consult a Yamaha dealer immediately NOTE Adding an in line 10 micron fuel filter has been show to greatly reduce the chance of fuel contamination problems Consult your dealer for informat...

Page 31: ...the oil level For details on how to read the indicators see page 47 CAUTION ECM00030 Do not operate the engine without oil Se rious engine damage will occur EMU26550 Oil level indicator digital type This indicator shows the engine oil level If the oil level falls below the lower limit the warning indicator will start to blink For fur ther information see page 39 CAUTION ECM00030 Do not operate the...

Page 32: ...nts of the display come on as a test After a few seconds the gauge will change to normal operation Watch the gauge when turning on the main switch to make sure all segments come on NOTE The speedometer displays km h mph or knots according to operator preference Se lect the desired units of measurement by set ting the selector switch on the back of the gauge See the illustration for settings EMU266...

Page 33: ...ne 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 Changing the display format Pressing the mode button chang es the display format in the following pat tern Total hours Trip hours Display off Resetting the trip hours Simultaneously pressing the set and mode buttons for more than 1 second while the t...

Page 34: ...layed Press the set button again to start the clock NOTE The clock operates on battery power Dis connecting the battery will stop the clock Reset the clock after connecting the battery EMU26711 Fuel gauge Eight segments indicate the fuel level When all segments are showing the fuel tank is full CAUTION ECM00860 The Yamaha fuel tank sensor differs from conventional sensors Incorrectly setting the s...

Page 35: ...a few seconds the gauge will change to normal operation Watch the gauge when turning on the main switch to make sure all segments come on EMU26751 Fuel flow meter The fuel flow meter displays the amount of fuel flow over a one hour period at the cur rent rate of engine operation Fuel flow readings are not accurate when the engine is operating under about 1300 r min As the fuel pump cycles on and o...

Page 36: ...o operator prefer ence Select the desired units of measure ment by setting the selector switch on the back of the gauge during installation The fuel consumption meter and fuel economy meter will indicate the same unit of measurement EMU26760 Fuel consumption meter This gauge displays the total amount of fuel consumed since the gauge was last reset Press the mode button repeatedly until the indicat...

Page 37: ... These variations can be even greater if the engines are of different year models In addition variations in propel lers even of the same basic dimensions of the same design can also cause a slight variation in fuel consumption EMU26781 Twin engine speed synchronizer This gauge displays the difference in engine speed r min between the port and star board engines for reference purposes when synchron...

Page 38: ...ay total hour trip hour display oil level display water detection warning en gine trouble warning and periodic mainte nance notification If optional sensors are connected to the unit cooling water pressure display will be available For the optional sensor consult your Yamaha dealer The ta chometer unit is available in round or square types Check your tachometer unit type 1 Set button 2 Mode button...

Page 39: ...ill automatically de crease to about 2000 r min When the buzzer sounds and the oil level warning indicator blinks check the oil level and add the oil if necessary If the warning device has activated while the appropriate engine oil level is maintained consult your Yamaha dealer CAUTION ECM01580 Do not continue to run the engine if the oil level warning device has activated Seri ous engine damage w...

Page 40: ...cated and corrected Water separator warning This indicator will blink when water has accu mulated in the water separator fuel filter while cruising In such an event stop the en gine immediately and see page 82 of this manual to drain the water from the fuel filter Get back to the port soon and consult a Yamaha dealer immediately CAUTION ECM00910 Gasoline mixed with water could cause damage to the ...

Page 41: ...tery consult your Yamaha dealer EMU31610 Speed fuel meter unit This unit shows the boat speed and has the functions of fuel meter total fuel consump tion display fuel economy display fuel flow display and system voltage display If op tional sensors are connected to the unit trip display water surface temperature display depth display and clock will be available For the optional sensor consult your...

Page 42: ... tion manual EMU31620 Speedometer unit This unit shows the boat speed and has functions of fuel meter and system voltage display If optional sensors are connected to the unit trip display water surface tempera ture display depth display and clock will be available For the optional sensor consult your Yamaha dealer 1 Speedometer 2 Fuel meter 3 Multifunction display 1 Set button 2 Mode button 1 Spee...

Page 43: ... manual EMU31630 Fuel management meter This meter has functions of fuel flow meter total consumption display fuel economy dis play and remaining fuel display NOTE After the main switch is first turned on all the displays come on as a test After a few sec onds the gauge will change to normal oper ation NOTE The fuel management meter shows various kinds of information when the operator uses the set ...

Page 44: ...g device The engine speed will automatically de crease to about 2000 r min If equipped with the overheat warning indi cator it will light or blink The buzzer will sound If the warning system has activated stop the engine and check the cooling water inlet for clogging NOTE Dual engine drive users Should the overheat warning system of one engine activate the engine will slow down and the buzzer will...

Page 45: ...matically decrease to about 2000 r min The oil level warning indicator will light or blink The buzzer will sound if equipped on the tiller handle remote control box or main switch panel If the warning system has been 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 overheat ing To make troubleshooting easier...

Page 46: ...Basic components 40 1 Oil filter 1 ZMU01952 ...

Page 47: ...ted so that the boat is well balanced Otherwise the boat could be hard to steer For single en gine boats mount the outboard motor on the centerline keel line of the boat For dual en gine boats mount the outboard motors equi distant from the centerline Consult your Yamaha dealer or boat manufacturer for fur ther information on determining the proper mounting location EMU26931 Mounting height boat b...

Page 48: ...can create airborne water spray while the boat is cruising If the motor is operated con tinuously in the presence of airborne water spray enough water could enter the engine through the intake opening on the cowling to cause severe engine damage Eliminate the cause of the air borne water spray EMU27041 Breaking in engine Your new engine requires a period of break in to allow mating surfaces of mov...

Page 49: ...at full throttle for more than 5 minutes at a time 5 After the first 10 hours Operate the engine normally EMU27104 Pre operation checks WARNING EWM00081 If any item in the pre operation check is not working properly have it inspected and repaired before operating the out board motor Otherwise an accident could occur CAUTION ECM00120 Do not start the engine out of water Over heating and serious eng...

Page 50: ... loose or damaged fasteners Check the propeller for damage Check that the battery is in good condition and the battery connections are secure EMU27221 Operation after a long period of storage When operating the engine after a long peri od 12 months of storage proceed as fol lows 1 Start the engine Leave it idling WARNING EWM00090 Do not touch or remove electrical parts when starting or during oper...

Page 51: ...sed deposits in the combustion chamber When enough de posits collect piston rings begin sticking Performance drops and engine wear in creases dramatically While many additives available may reduce deposits Yamaha recommends the use of Ring Free Fuel Additive available from your Yamaha dealer Ring Free Fuel Addi tive has repeatedly proven its ability to clean combustion deposits from inside the eng...

Page 52: ...1 US gal 0 8 Imp gal can be added 2 Turn on the main switch The Yamaha oil injection system will automatically feed oil from the remote oil tank to the engine oil tank 3 Operate the engine normally CAUTION ECM00570 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 in the remote oil tank Otherwise the oil ...

Page 53: ...e than 300 cm3 0 32 US qt 0 26 Imp qt 1500 cm3 1 6 US qt 1 31 Imp qt or less Add oil see page 45 Red Yellow Green 300 cm3 0 32 US qt 0 26 Imp qt or less more than 1500 cm3 1 6 US qt 1 31 Imp qt Check oil filter for clog ging Check battery cable connection Buzzer will sound Engine speed is auto matically reduced to about 2000 r min Red 300 cm3 0 32 US qt 0 26 Imp qt or less 1500 cm3 1 6 US qt 1 31 ...

Page 54: ...nhaled Symptoms include nausea dizziness and drowsiness Keep cockpit and cab in areas well ventilated Avoid blocking exhaust outlets 1 If there is an air vent screw on the fuel tank cap loosen it 2 or 3 turns 2 If there is a fuel joint or a fuel cock on the boat firmly connect the fuel line to the joint or open the fuel cock 3 Squeeze the primer pump with the ar row pointing up until you feel it b...

Page 55: ...ing the cord dur ing normal operation Loss of engine power means the loss of most steering control Also without engine power the boat could slow rapidly This could cause people and objects in the boat to be thrown forward 3 Turn the main switch to on NOTE Dual engine users When the main switch is turned on the buzzer operates for a few sec onds then stops automatically The buzzer also operates if ...

Page 56: ...engine life 2 Check for a steady flow of water from the cooling water pilot hole CAUTION ECM00511 A continuous flow of water from the cool ing water pilot hole shows that the water pump is pumping water through the cool ing passages If water is not flowing out of the hole at all times while the engine is running overheating and serious dam age could occur Stop the engine and check whether the cool...

Page 57: ...lock trigger up if equipped 2 Move the remote control lever firmly and crisply forward for forward gear or backward for reverse gear about 35 a detent can felt To shift from in gear forward reverse to neutral 1 Close the throttle so that the engine slows to idle speed 2 After the engine is at idle speed in gear move the remote control lever firmly and crisply into the neutral position 1 Neutral in...

Page 58: ... idle The stopping distance varies depending on gross weight water surface conditions and wind direction EMU27820 Stopping engine Before stopping the engine first let it cool off for a few minutes at idle or low speed Stop ping the engine immediately after operating at high speed is not recommended EMU27853 Procedure 1 Turn the main switch to off 2 After stopping the engine disconnect the fuel lin...

Page 59: ...at more difficult This in creases the possibility of an accident If the boat begins to feel unstable or is hard to steer slow down and or readjust the trim angle EMU27883 Adjusting trim angle Power trim and tilt WARNING EWM00752 Be sure all people are clear of the out board motor when adjusting the tilt an gle Body parts can be crushed between the motor and the clamp bracket when the motor is trim...

Page 60: ... With the bow up the boat may have a greater tenden cy to steer to one side or the other Compen sate for this as you steer The trim tab can also be adjusted to help offset this effect When the bow of the boat is down it is easier to accelerate from a standing start onto plane Bow Up Too much trim out puts the bow of the boat too high in the water Performance and econ omy are decreased because the ...

Page 61: ...ith obstructions and also to re duce salt corrosion WARNING EWM00221 Be sure all people are clear of the out board motor when tilting up and down Body parts can be crushed between the motor and the clamp bracket when the motor is trimmed or tilted WARNING EWM00250 Leaking fuel is a fire hazard If there is a fuel joint on the outboard motor discon nect the fuel line or close the fuel cock if the en...

Page 62: ...the outboard motor could fall back down suddenly if oil in the power trim and tilt unit or in the power tilt unit loses pressure CAUTION ECM01640 Do not use the tilt support lever or knob when trailering the boat The outboard motor could shake loose from the tilt sup port and fall If the motor cannot be trail ered in the normal running position use an additional support device to secure it in the ...

Page 63: ...rocedure for tilting down power trim and tilt models 1 Push the power trim and tilt switch up until the outboard motor is support ed by the tilt rod and the tilt support lever becomes free 2 Release the tilt support lever 3 Push the power trim and tilt switch down to lower the outboard motor to the desired position EMU28060 Cruising in shallow water The outboard motor can be tilted up partially to...

Page 64: ...ng in shallow water Otherwise severe damage from overheat ing can result EMU32920 Procedure for power trim and tilt 1 Place the remote control lever in neutral 2 Slightly tilt the outboard motor up to the desired position using the power trim and tilt switch 3 To return the outboard motor to the nor mal running position press the power trim and tilt switch and slowly tilt the out board motor down ...

Page 65: ... that you use the optional chromium plated water pump kit available for V4 and large engines if you use the outboard motor in water with a lot of sediment in it such as muddy or other turbid cloudy water Cruising in acidic water Water in some areas can be acidic After op erating in such water flush the cooling pas sages with fresh water to prevent corrosion Also rinse the outside of the outboard m...

Page 66: ...m output 220 7 kW 5150 r min 300 HP 5150 r min Idling speed in neutral 730 30 r min Engine Type 2 stroke V Displacement 3342 0 cm3 Bore stroke 93 0 82 0 mm 3 66 3 23 in Ignition system TCI Spark plug with resistor NGK BKR6EKU Spark plug gap 1 5 1 6 mm 0 059 0 063 in Control system Remote control Starting system Electric Starting carburetion system Electronic fuel injection Min cold cranking amps C...

Page 67: ...r is used Severe injury could occur if the outboard motor accidentally falls CAUTION ECM00660 Do not use the tilt support lever or knob when trailering the boat The outboard motor could shake loose from the tilt sup port and fall If the motor cannot be trail ered in the normal running position use an additional support device to secure it in the tilt position The outboard motor should be trailered...

Page 68: ...e several times manual ly 4 Reinstall the spark plug s EMU31390 Washing the outboard motor NOTE This procedure is performed while the top cowling is installed 1 Wash the outboard motor body using fresh water 2 Drain the cooling water completely out of the motor Clean the body thoroughly EMU28411 Lubrication oil injection models 1 Install the spark plug s and torque to proper specification For info...

Page 69: ... batteries away from fire sparks or open flames for example welding equipment lighted cigarettes and so on DO NOT SMOKE when charging or han dling batteries KEEP BATTERIES AND ELECTROLYTIC FLUID OUT OF REACH OF CHILDREN Follow the manual of the battery for the han dling of the battery Batteries vary among manufacturers Therefore the following pro cedures may not always apply Consult your battery m...

Page 70: ...ing the engine which can cause serious overheating Be sure the connector is tightened securely on the fit ting after flushing the engine NOTE When flushing the engine with the boat in the water tilting up the outboard motor un til it is completely out of the water will achieve better results For cooling system flushing instructions see page 61 EMU28450 Cleaning the outboard motor After use wash th...

Page 71: ...ever including those to the emission control system must be performed by an authorized Yamaha marine dealership A service manual is available for purchase through your Yamaha dealer for owners who have the mechanical skills tools and other equipment necessary to perform mainte nance not covered by this owner s manual EMU28511 Replacement parts If replacement parts are necessary use only genuine Ya...

Page 72: ...tions Initial Every 10 hours 1 month 50 hours 3 months 100 hours 6 months 200 hours 1 year Anode s external Inspection replace ment Anode s internal Inspection replace ment Battery Inspection charging Cooling water pas sages Cleaning Cowling clamp Inspection Fuel filter can be dis assembled Inspection cleaning Fuel system Inspection Gear oil Change Greasing points Greasing Idling speed Inspection ...

Page 73: ...Inspection adjustment Oil tank water drain Inspection cleaning Spark plug s Cleaning adjustment replacement Item Actions Every 500 hours 2 5 years 1000 hours 5 years High pressure fuel pump drive belt Replacement Fuel filter vapor sepa rator tank Replacement Exhaust guide exhaust manifold Inspection replace ment Item Actions Initial Every 10 hours 1 month 50 hours 3 months 100 hours 6 months 200 h...

Page 74: ...adjusting spark plug WARNING EWM00560 When removing or installing a spark plug be careful not to damage the insulator A damaged insulator could allow external sparks which could lead to explosion or fire WARNING EWM01550 The engine will still be very hot when it has just been turned off Take extremely ZMU01939 ...

Page 75: ...g the plug always clean the gas ket 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 estimate of the correct torque is 1 4 to 1 2 a turn past fin ger tight Have the spark plug adjusted to the correct torque as soon as possible with a torque wrench EMU28...

Page 76: ...diagnostic tachometer should be used for this procedure Results may vary depending on whether testing is conducted with the flushing attachment in a test tank or with the outboard motor in the water 1 Start the engine and allow it to warm up fully in neutral until it is running smooth ly NOTE Correct idling speed inspection is only possi ble if the engine is fully warmed up If not warmed up fully ...

Page 77: ...and body cylinder EMU29154 Checking power trim and tilt system WARNING EWM00431 Never get under the lower unit while it is tilted even when the tilt support lever is locked Severe injury could occur if the outboard motor accidentally falls Make sure no one is under the outboard motor before performing this test Body parts can be crushed between the mo tor and the clamp bracket when the mo tor is t...

Page 78: ...t your Yamaha dealer if any operation is abnormal EMU32110 Checking propeller WARNING EWM01610 You could be seriously injured if the en gine accidentally starts when you are near the propeller Before inspecting removing or install ing the propeller remove the spark plug caps from the spark plugs Also place the shift control in neutral turn the main switch to off and re move the key and remove the ...

Page 79: ... and pull it out using a pair of pliers 2 Remove the propeller nut washer and spacer if equipped 3 Remove the propeller washer if equipped and thrust washer EMU30671 Installing propeller EMU29242 Spline models WARNING EWM00770 On counter rotation models be sure to use a propeller intended for counter clockwise rotation These propellers are identified with the letter L after the size indication on ...

Page 80: ...If the propeller nut does not align with the propeller shaft hole after tightening to the specified torque tighten the nut further to align it with the hole EMU31910 Changing gear oil WARNING EWM00800 Be sure the outboard motor is securely fastened to the transom or a stable stand You could be severely injured if the outboard motor falls on you Never get under the lower unit while it is tilted eve...

Page 81: ...Yamaha dealer 6 With the outboard motor in a vertical po sition and using a flexible or pressur ized filling device inject the gear oil into the gear oil drain screw hole 7 Put a new gasket on the oil level plug When the oil begins to flow out of the oil level plug hole insert and tighten the oil level plug 8 Put a new gasket on the gear oil drain screw Insert and tighten the gear oil drain screw ...

Page 82: ...ays follow these preventive mea sures Avoid bodily contact with electrolytic fluid as it can cause severe burns or permanent eye injury Wear protective eye gear when han dling or working near batteries Antidote EXTERNAL SKIN Flush with water EYES Flush with water for 15 minutes and get immediate medical attention Antidote INTERNAL Drink large quantities of water or milk followed by milk of magnesi...

Page 83: ...or re charging batteries EMU29363 Connecting the Battery WARNING EWM00570 Mount the battery holder securely in a dry well ventilated vibration free loca tion in the boat Install a fully charged bat tery in the holder CAUTION ECM01122 Make sure the main switch on applica ble models is off before work ing on the battery Reversal of the battery cables will dam age the electrical parts Connect the red...

Page 84: ...ose or im properly fitting cover could allow water into the engine Check the fitting of the top cowling by push ing it with both hands If it is loose have it re paired by your Yamaha dealer EMU29400 Coating the boat bottom A clean hull improves boat performance The boat bottom should be kept as clean of ma rine growth as possible If necessary the boat bottom can be coated with an anti foul ing pai...

Page 85: ...rviced by a Yamaha dealer Q Is shift lever in gear A Shift to neutral Engine will not start starter operates Q Is fuel tank empty A Fill tank with clean fresh fuel Q Is fuel contaminated or stale A Fill tank with clean fresh fuel Q Is fuel filter clogged A Clean or replace filter Q Is starting procedure incorrect A See page 48 Q Has fuel pump malfunctioned A Have serviced by a Yamaha dealer Q Are ...

Page 86: ...Yamaha dealer Q Is air vent screw on fuel tank closed A Open air vent screw Q Is choke knob pulled out A Return to home position Q Is motor angle too high A Return to normal operating position Q Is carburetor clogged A Have serviced by a Yamaha dealer Q Is fuel joint connection incorrect A Connect correctly Q Is throttle valve adjustment incorrect A Have serviced by a Yamaha dealer Q Is battery ca...

Page 87: ...t type A Inspect spark plug s Clean or replace with recommended type Q Are weeds or other foreign matter tangled on gear housing A Remove foreign matter and clean lower unit Q Is fuel system obstructed A Check for pinched or kinked fuel line or other obstructions in fuel system Q Is fuel filter clogged A Clean or replace filter Q Is fuel contaminated or stale A Fill tank with clean fresh fuel Q Is...

Page 88: ...NING EWM00870 The outboard motor can be seriously damaged by a collision while operating or trailering Damage could make the out board motor unsafe to operate If the outboard motor hits an object in the wa ter follow the procedure below 1 Stop the engine immediately 2 Inspect the control system and all com ponents for damage Also inspect the boat for damage 3 Whether damage is found or not return ...

Page 89: ... immediately blows again EMU29523 Power trim and tilt will not operate If the engine cannot be tilted up or down with the power trim and tilt because of a dis charged battery or a failure with the power trim and tilt unit the engine can be tilted manually 1 Loosen the manual valve screw by turn ing it counterclockwise until it stops 2 Put the engine in the desired position then tighten the manual ...

Page 90: ...assembly or replacement could result in a fuel leak which could result in a fire or explosion hazard If the water separator warning indicator on the Command Link tachometer blinks per form the following procedure 1 Stop the engine 2 Remove the top cowling 3 Disconnect the water detection switch coupler CAUTION ECM01570 Be careful not to get any water on the wa ter detection switch coupler otherwis...

Page 91: ...appear on the oil level indi cator the buzzer will sound and engine speed will be limited to about 2000 r min If this happens a reserve amount of oil can be pumped from the remote oil tank to the en gine oil tank using the emergency switch WARNING EWM01050 Be sure to stop the engine before per forming this procedure CAUTION ECM00900 If the emergency switch is held up too long too much oil will be ...

Page 92: ...Treatment of submerged motor If the outboard motor is submerged immedi ately take it to a Yamaha dealer Otherwise some corrosion may begin almost immedi ately If you cannot immediately take the outboard motor to a Yamaha dealer follow the proce dure below in order to minimize engine dam age EMU29970 Procedure 1 Thoroughly wash away mud salt sea weed and so on with fresh water 2 Remove the spark pl...

Page 93: ...7 plug holes while rotating the flywheel manually 5 Take the outboard motor to a Yamaha dealer as soon as possible CAUTION ECM00400 Do not attempt to run the outboard motor until it has been completely inspected ZMU01911 ...

Page 94: ...88 Consumer information EMU29811 Important warranty information for U S A and Canada ...

Page 95: ...Consumer information 89 ...

Page 96: ...Consumer information 90 EMU29820 YAMAHA MOTOR CORPORATION U S A OUTBOARD MOTOR TWO YEAR LIMITED WARRANTY ...

Page 97: ...Consumer information 91 ...

Page 98: ...Consumer information 92 ...

Page 99: ...Consumer information 93 EMU29841 IMPORTANT WARRANTY INFORMATION IF YOU USE YOUR YAMAHA OUTSIDE THE USA OR CANADA ...

Page 100: ......

Page 101: ...6D0 9 17 Hyoshi 07 6 7 13 28 ページ 3 ...

Page 102: ...Printed in Japan June 2007 0 4 1 Printed on recycled paper 6D0 9 17 Hyoshi 6 7 07 1 28 PM ページ 4 ...

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Yamaha LZ300, Owner'S Manual

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