YamahaメーカーLIT-18626-07-93の使用説明書/サービス説明書
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70 O WNER’S MANU AL 6H3-28199-1W U .S.A.Edition LIT -18626-07-93 q Read this manual carefully bef ore operating this outboard motor . 6H3-9-1W Hyoshi 08.
EMU25062 ZMU01690 Read this manual carefully before operating this outboard motor. Keep this manual onboard in a waterproof bag when boating. This manual should stay with the outboard motor if it is sold.
Important manual information EMU31283 To the owner Thank you for choosing a Yamaha outboard motor. This Owner’s Manual contains infor- mation needed for proper operation, mainte- nance and care. A thorough understanding of these simple instructions will help you ob- tain maximum enjoyment from your new Yamaha.
Table of contents Safety information ............................. 1 Outboard motor safety .................... 1 Propeller ............................................ 1 Rotating parts .................................... 1 Hot parts ................
Table of contents type) .............................................. 26 Instruments and indicators ............ 28 Digital tachometer ......................... 28 Tachometer ..................................... 28 Trim meter .......................
Table of contents Checking fuel filter .......................... 64 Inspecting idling speed ................... 64 Checking water in engine oil tank ............................................... 65 Checking wiring and connectors ..... 65 Checking propeller .
1 Safety information EMU33622 Outboard motor safety Observe these precautions at all times. EMU36500 Propeller People can be injured or killed if they come in contact with the propeller. The propeller can keep moving even when the motor is in neutral, and sharp edges of the propeller can cut even when stationary.
Safety information 2 EMU33820 Gasoline exposure and spills Take care not to spill gasoline. If gasoline spills, wipe it up immediately with dry rags. Dispose of rags properly. If any gasoline spills onto your skin, immedi- ately wash with soap and water.
Safety information 3 dling and lead to an accident, capsizing or swamping. EMU33771 Avoid collisions Scan constantly for people, objects, and other boats. Be alert for conditions that limit your visibility or block your vision of others. Operate defensively at safe speeds and keep a safe distance away from people, ob- jects, and other boats.
Safety information 4 go to boatus.org. EMU33880 Passenger training Make sure at least one other passenger is trained to operate the boat in the event of an emergency. EMU33890 Boating safety publications Be informed about boating safety. Additional publications and information can be obtained from many boating organizations.
Safety information 5 EMU33700 Steering and sailing rules and sound signals Whenever two vessels on the water meet one another, one vessel has the right-of- way; it is called the “stand-on” vessel. The vessel that does not have the right-of-way is called the “give-way” or “burdened”vessel.
Safety information 6 Crossing When two power driven vessels are crossing each other’s path close enough to run the risk of collision, the vessel which has the oth- er on the starboard (right) side must keep out of the way of the other. If the other vessel is on your right, you must keep out of its way; you are the Give-Way vessel.
Safety information 7 Reading buoys and other markers The waters of the United States are marked for safe navigation by the lateral system of buoyage. Simply put, buoys and markers have an arrangement of shapes, colors, numbers and lights to show which side of the buoy a boater should pass on when navigat- ing in a particular direction.
Safety information 8 ZMU01708.
9 General information EMU25171 Identification numbers record EMU25183 Outboard motor serial number The outboard motor serial number is stamped on the label attached to the port side of the clamp bracket.
General information 10 EMU33520 Read manuals and labels Before operating or working on this motor: ● Read this manual. ● Read any manuals supplied with the boat. ● Read all labels on the outboard motor and the boat. If you need any additional information, contact your Yamaha dealer.
General information 11 12 3 ZMU05670.
General information 12 EMU33843 Symbols The following symbols mean as follows. Notice/Warning Read Owner’s Manual Hazard caused by continuous rotation Electrical hazard Remote control lever/gear shi.
13 Specifications and requirements EMU31480 Specifications T IP: “(AL)” stated in the specification data below represents the numerical value for the alumi- num propeller installed. Likewise, “(SUS)” represents the value for stainless steel propeller installed and “(PL)” for plastic propeller installed.
Specifications and requirements 14 Gear oil quantity: 0.610 L (0.645 US qt, 0.537 Imp.qt) Tightening torque for engine: Spark plug: 25.0 Nm (2.55 kgf-m, 18.4 ft-lb) Propeller nut: 35.0 Nm (3.57 kgf-m, 25.8 ft-lb) EMU33553 Installation requirements EMU33563 Boat horsepower rating W ARNING EWM01560 Overpowering a boat can cause severe instability.
Specifications and requirements 15 boat. WARNING! Do not put flammable items, or loose heavy or metal objects in the same compartment as the battery. Fire, explosion or sparks could result.
Specifications and requirements 16 comends that you use alcohol-free (see Gasohol) gasoline whenever possible. NOTICE ECM01980 ● Do not use leaded gasoline. Leaded gasoline can seriously damage the en- gine. ● Avoid getting water and contaminants in the fuel tank.
Specifications and requirements 17 rine growth as possible. If necessary, the boat bottom can be coated with an anti-foul- ing paint approved for your area to inhibit marine growth. Do not use anti-fouling paint which includes copper or graphite. These paints can cause more rapid engine corrosion.
Specifications and requirements 18 1. Manufactured date label location 1 ZMU04893.
19 Components EMU2579H Components diagram T IP: * May not be exactly as shown; also may not be included as standard equipment on all mod- els. 70 EMU25802 Fuel tank If your model was equipped with a portable fuel tank, its function is as follows.
Components 20 EMU25830 Fuel joint This joint is used to connect the fuel line. EMU25841 Fuel gauge This gauge is located on either the fuel tank cap or on the fuel joint base. It shows the ap- proximate amount of fuel remaining in the tank. EMU25850 Fuel tank cap This cap seals the fuel tank.
Components 21 EMU26201 Neutral interlock trigger To 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.
Components 22 EMU25941 Throttle grip The throttle grip is on the tiller handle. Turn the grip counterclockwise to increase speed and clockwise to decrease speed. EMU25961 Throttle indicator The fuel consumption curve on the throttle indicator shows the relative amount of fuel consumed for each throttle position.
Components 23 When constant speed is desired, tighten the adjuster to maintain the desired throttle set- ting. EMU25993 Engine shut-off cord (lanyard) and clip The clip must be attached to the engine shut- off switch for the engine to run. The cord should be attached to a secure place on the operator’s clothing, or arm or leg.
Components 24 EMU26090 Main switch The main switch controls the ignition system; its operation is described below. ● “” (off) With the main switch in the “ ” (off) posi- tion, the electrical circuits are off, and the key can be removed.
Components 25 EMU26153 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.
Components 26 EMU26261 Trim rod (tilt pin) The position of the trim rod determines the minimum trim angle of the outboard motor in relation to the transom. EMU26341 Tilt support lever for power trim and tilt model To keep the outboard motor in the tilted up position, lock the tilt support lever to the clamp bracket.
Components 27 1. T op cowling loc k lev er(s) ZMU02596 1.
28 Instruments and indicators EMU31414 Digital tachometer The tachometer shows the engine speed and has the following functions. All segments of the display will light momen- tarily after the main switch is turned on and will return to normal thereafter.
Instruments and indicators 29 EMU26551 Oil level indicator (digital type) This indicator shows the engine oil level. If the oil level falls below the lower limit, the alert indicator will start to blink. For further in- formation, see page 31. NOTICE ECM00030 Do not operate the engine without oil.
Instruments and indicators 30 EMU26611 Analog trim meter This gauge shows the trim angle of your out- board motor. Memorize the trim angles that work best for your boat under different conditions. Adjust the trim angle to the desired setting with the power trim and tilt switch.
31 Engine control system EMU26803 Alert system NOTICE ECM00091 Do not continue to operate the engine if a alert device has activated. Consult your Yamaha dealer if the problem cannot be located and corrected. EMU2681A Overheat alert This engine has an overheat-alert device.
Engine control system 32 ● The oil level-alert indicator will light or blink. ● The buzzer will sound (if equipped on the tiller handle, remote control box, or main switch panel). If the alert system has been activated, stop the engine and check for the cause.
33 Installation EMU26902 Installation The information presented in this section is intended as reference only. It is not possible to provide complete instructions for every possible boat and motor combination. Prop- er mounting depends in part on experience and the specific boat and motor combination.
Installation 34 NOTICE ECM01630 ● During water testing, check the buoy- ancy of the boat, at rest, with its maxi- mum load. Check that the static water level on the exhaust housing is low enough to prevent water entry into the power head when water rises due to waves when the outboard is not run- ning.
35 Operation EMU36380 First-time operation EMU27020 Breaking in engine Your new engine requires a period of break- in to allow mating surfaces of moving parts to wear in evenly. Correct break-in will help en- sure proper performance and longer engine life.
Operation 36 dent could occur. NOTICE ECM00120 Do not start the engine out of water. Over- heating and serious engine damage can occur. EMU37141 Fuel level Be sure you have plenty of fuel for your trip. A good rule is to use 1/3 of your fuel to get to the destination, 1/3 to return, and to keep 1/ 3 as an emergency reserve.
Operation 37 EMU36900 Controls Tiller handle models: ● Turn the tiller handle fully to the left and right to make sure operation is smooth. ● Turn the throttle grip from the fully closed to the fully open position. Make sure that it turns smoothly and that it completely re- turns to the fully closed position.
Operation 38 od (12 months) of storage, proceed as fol- lows: 1. Use a 50:1 gasoline-oil mixture to start the engine. 2. Start the engine. Leave it idling. WARNING! Do not touch or remove electrical parts when starting or dur- ing operation. Keep hands, hair, and clothes away from the flywheel and other rotating parts while the engine is running.
Operation 39 EMU29158 Checking power trim and tilt system W ARNING EWM01930 ● 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. ● Body parts can be crushed between the motor and the clamp bracket when the motor is trimmed or tilted.
Operation 40 properly connected or the battery will not start the engine. Refer to the battery manufacturer’s instruc- tions for checks for your particular battery. EMU27234 Filling fuel and engine oil EMU27246 Filling fuel for portable tank W ARNING EWM01830 ● Gasoline and its vapors are highly flam- mable and explosive.
Operation 41 2. Open the oil tank filler cap by pulling the tab on the cap. 3. Slowly pour the engine oil into the en- gine oil tank. 4. After filling, replace the all caps secure- ly.
Operation 42 EMU27321 Oil level indicator operation The various functions of the oil level system are as follows: EMU27364 Electric start models EMU27451 Operating engine EMU27464 Feeding fuel (portable tank) W ARNING EWM00420 ● Before starting the engine, make sure that the boat is tightly moored and that you can steer clear of any obstructions.
Operation 43 tank cap, loosen it 2 or 3 turns. 2. If there is a fuel joint on the motor, firmly connect the fuel line to the joint. Then firmly connect the other end of the fuel line to the joint on the fuel tank. 3. Squeeze the primer pump, with the ar- row pointing up, until you feel it become firm.
Operation 44 1. Place the gear shift lever in neutral. T IP: The start-in-gear protection device prevents the engine from starting except when in neu- tral. 2. Attach the engine shut-off cord to a se- cure place on your clothing, or your arm or leg. Then install the clip on the other end of the cord into the engine shut-off switch.
Operation 45 page 46. ● If the engine is warm and fails to start, open the throttle slightly and try to start the engine again. If the engine still fails to start, see page 71. EMU27664 Electric start and remote control models W ARNING EWM01840 ● Failure to attached engine shut-off cord could result in a runaway boat if opera- tor is ejected.
Operation 46 “” (on), wait 10 seconds, then crank the engine again. [ECM00192] T IP: ● When the engine is cold, it needs to be warmed up. For further information, see page 46. ● If the engine is warm and fails to start, open the throttle slightly and try to start the engine again.
Operation 47 EMU33492 Shifting W ARNING EWM00180 Before shifting, make sure there are no swimmers or obstacles in the water near you. NOTICE ECM01610 Warm up the engine before shifting into gear. Until the engine is warm, the idle speed may be higher than normal.
Operation 48 2. After the engine is at idle speed in gear move the remote control lever / gear shift lever firmly and crisply into the neu- tral position.
Operation 49 2. After stopping the engine, disconnect the fuel line if there is a fuel joint on the outboard motor. 3. Tighten the air vent screw on the fuel tank cap (if equipped).
Operation 50 EMU27884 Adjusting trim angle (Power trim and tilt) W ARNING EWM00753 ● Be sure all people are clear of the out- board motor when adjusting the trim angle. Body parts can be crushed be- tween the motor and the clamp bracket when the motor is trimmed or tilted.
Operation 51 angles to find the position that works best for your boat and operating conditions. EMU27911 Adjusting boat trim When the boat is on plane, a bow-up attitude results in less drag, greater stability and effi- ciency. This is generally when the keel line of the boat is up about 3 to 5 degrees.
Operation 52 duce salt corrosion. W ARNING 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. W ARNING EWM00250 Leaking fuel is a fire hazard.
Operation 53 3. Pull the tilt support lever toward you to support the engine. WARNING! After tilting the outboard motor, be sure to support it with the tilt support knob or tilt support lever. Otherwise the out- board motor could fall back down suddenly if oil in the power trim and tilt unit or in the power tilt unit loses pressure.
Operation 54 EMU28061 Shallow water EMU32851 Power trim and tilt models The outboard motor can be tilted up partially to allow operation in shallow water. NOTICE ECM00260 Do not tilt the outboard motor up so that the cooling water inlet on the lower unit is above the surface of the water when set- ting up for and cruising in shallow water.
Operation 55 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. EMU28194 Cruising in other conditions Cruising in salt water After operating in salt water, flush the cooling water passages with fresh water to prevent them from becoming clogged.
56 Maintenance EMU28226 Transporting and storing outboard motor W ARNING EWM00692 ● USE CARE when transporting fuel tank, whether in a boat or car. ● 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.
Maintenance 57 and Stabilizer” to each gallon of fuel. T IP: The use of “Yamaha Fuel Conditioner and Stabilizer” eliminates the need to drain the fuel system. Consult your Yamaha dealer or other qualified mechanic if the fuel system is to be drained instead.
Maintenance 58 T IP: For long-term storage, fogging the engine with oil is recommended. Contact your Yamaha dealer for information about fogging oil and procedures for your engine. EMU28423 Cleaning and anticorrosion measures 1. Wash down the exterior of the outboard motor with fresh water and dry off com- pletely.
Maintenance 59 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 Yamaha parts or parts of equivalent design and quality.
Maintenance 60 EMU34445 Maintenance chart 1 T IP: ● Refer to the sections in this chapter for explanations of each owner-specific action. ● The maintenance cycle on these charts assume usage of 100 hours per year and regular flushing of the cooling water passages.
Maintenance 61 Fuel line(High pres- sure) Inspection or replace- ment as necessary Fuel line(Low pres- sure) Inspection Fuel line(Low pres- sure) Inspection or replace- ment as necessary Fuel pump Ins.
Maintenance 62 EMU34451 Maintenance chart 2 W ater inlet Inspection Main switch/stop switch/chok e s witch Inspection or replace- ment as necessary Wire harness connec- tions/Wire coupler con- nection.
Maintenance 63 EMU28932 Greasing Yamaha marine grease (Water resistant grease) 70 EMU28955 Cleaning and adjusting spark plug The spark plug is an important engine com- ponent and is easy to inspect. The condition of the spark plug can indicate something about the condition of the engine.
Maintenance 64 lead to explosion or fire. [EWM00561] 3. Be sure to use the specified spark plug, otherwise the engine may not operate properly. Before fitting the spark plug, measure the electrode gap with a wire thickness gauge; adjust the gap to spec- ification if necessary.
Maintenance 65 T IP: Correct idling 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 ver- ifying the idle speed, or the idle speed re- quires adjustment, consult a Yamaha dealer or other qualified mechanic.
Maintenance 66 ● Check each of the propeller blades for wear, erosion from cavitation or ventila- tion, or other damage. ● Check the propeller shaft for damage. ● Check the splines for wear or damage. ● Check for fish line tangled around the pro- peller shaft.
Maintenance 67 before installing the propeller, other- wise the lower case and propeller boss could be damaged. [ECM01880] 3. Install the spacer (if equipped) and the washer. Tighten the propeller nut to the specified torque. 4. Align the propeller nut with the propeller shaft hole.
Maintenance 68 T IP: For disposal of used oil, consult your Yamaha dealer. 5. Put the outboard motor in a vertical po- sition. Using a flexible or pressurized fill- ing device, inject the gear oil into the gear oil drain screw hole. 6. Put a new gasket on the oil level plug.
Maintenance 69 the screws firmly. EMU29312 Inspecting and replacing anode(s) Yamaha outboard motors are protected from corrosion by sacrificial anodes. Inspect the external anodes periodically. Remove scales from the surfaces of the anodes. Consult a Yamaha dealer for replacement of external anodes.
Maintenance 70 ing, consult your Yamaha dealer. 3. Check the battery connections. They should be clean, secure, and covered by an insulating cover. WARNING! Bad connections can produce shorting or arcing and cause an explosion.
71 Trouble Recovery EMU29427 Troubleshooting A problem in the fuel, compression, or igni- tion systems can cause poor starting, loss of power, or other problems. This section de- scribes basic checks and possible remedies, and covers all Yamaha outboard motors.
Trouble Recovery 72 Q. Is fuel system obstructed? A. Check for pinched or kinked fuel line or other obstructions in fuel system. Q. Is fuel contaminated or stale? A. Fill tank with clean, fresh fuel. Q. Is fuel filter clogged? A. Clean or replace filter.
Trouble Recovery 73 Q. Is load on boat improperly distributed? A. Distribute load to place boat on an even plane. Q. Is water pump or thermostat faulty? A. Have serviced by a Yamaha dealer. Q. Is there excess water in fuel filter cup? A. Drain filter cup.
Trouble Recovery 74 Q. Is fuel joint connection incorrect? A. Connect correctly. Q. Is heat range of spark plug incorrect? A. Inspect spark plug and replace it with rec- ommended type. Q. Is high pressure fuel pump drive belt bro- ken? A. Have serviced by a Yamaha dealer.
Trouble Recovery 75 Consult your Yamaha dealer if the new fuse immediately blows again. EMU29512 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.
Trouble Recovery 76 wheel or other moving parts when the engine is running. Do not install the starter mechanism or top cowling after the engine is running. ● Do not touch the ignition coil, spark plug wire, spark plug cap, or other elec- trical components when starting or op- erating the motor.
Trouble Recovery 77 T IP: When the engine does not start with this pro- cedure, see page 77. EMU29671 Engine fails to operate EMU29691 Ignition system malfunction If the battery voltage is low or in the unlikely event of an ignition system malfunction, the engine speed may become erratic or the en- gine may stop.
Trouble Recovery 78 3. Squeeze the primer pump two or three times to feed fuel. 4. Open the throttle slightly without shifting using the throttle grip, neutral throttle le- ver or free accelerator. It is necessary to change the throttle opening slightly de- pending on the engine temperature.
Trouble Recovery 79 7. After the engine starts, close the emer- gency starter valve (if used), then return the throttle to its original position. T IP: When the starter mechanism malfunctions, see page 75. EMU33501 Treatment of submerged motor If the outboard motor is submerged, immedi- ately take it to a Yamaha dealer.
80 Consumer information EMU29811 Important warranty information for U.S.A. and Canada.
Consumer information 81.
Consumer information 82 EMU29820 YAMAHA MOTOR CORPORATION, U.S.A. OUTBOARD MOTOR TWO YEAR LIMITED WARRANTY.
Consumer information 83.
Consumer information 84.
Consumer information 85 EMU29841 IMPORTANT WARRANTY INFORMATION IF YOU USE YOUR YAMAHA OUTSIDE THE USA OR CANADA.
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