EMU25110 tain maximum enjoyment from your new Yamaha. If you have any question about the operation or maintenance of your outboard motor, please consult a Yamaha dealer. V150D In this Owner’s Manual particularly important...
Table of contents General information ......1 Digital tachometer ......17 Oil level indicators (three Identification numbers record..1 indicators) ........17 Outboard motor serial number ..1 Oil level indicator (digital type) ..18 Key number........1 Overheat warning indicator (digital Emission control information ...
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Maintenance chart ......46 IMPORTANT WARRANTY Greasing ......... 48 INFORMATION IF YOU USE Cleaning and adjusting spark plug .. 48 YOUR YAMAHA OUTSIDE Checking fuel system ...... 49 U.S.A. OR CANADA ....73 Inspecting fuel filter ......50 Cleaning fuel filter ......50 Inspecting idling speed ....
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 outboard motor is sto- len. 1. Key number...
General information particular label. ZMU02896 ZMU04668 EMU25261 Manufactured date label 1. Star labels location This label is attached to the clamp bracket or the swivel bracket. EMU25280 One Star—Low Emission The one-star label identifies engines that meet the Air Resources Board’s 2001 ex- haust emission standards.
General information the outboard should be equal to or less than the rated horsepower capacity of the boat. If the rated horsepower capacity of the boat is unknown, consult the dealer or boat manufacturer. Do not modify the outboard. Modifications could make the motor unfit or unsafe to use.
General information of the road” on page 5. EMU25380 Important labels Stay informed about the weather. Check EMU25395 weather forecasts before boating. Avoid Warning labels boating in hazardous weather. Tell someone where you are going: leave a Float Plan with a responsible person. Be sure to cancel the Float Plan when you re- turn.
General information YAMALUBE 2 STROKE OUTBOARD OIL or to continue its course and speed, except to an equivalent TC-W3 certified ouboard oil. avoid an immediate collision. When you EWM01270 maintain your direction and speed, the other WARNING vessel will be able to determine how best to Do not add gasoline to the oil tank.
General information In the following illustration, your boat is in the of the way of the other. If the other vessel is center. You should give the right-of-way to on your right, you must keep out of its way; any vessels shown in white area (you are the you are the Give-Way vessel.
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General information heard, however, the vessel should still pro- tion with respect to the buoys should be re- ceed around the bend with caution. If you versed; red buoys should be to port and navigate such waters with your boat, you will black buoys to starboard.
General information ZMU01708 EMU25540 away from sparks, flames, or other Fueling instructions sources of ignition. EWM00010 Stop engine before refueling. WARNING Refuel in a well-ventilated area. Refuel GASOLINE AND ITS VAPORS ARE HIGH- portable fuel tanks off the boat. LY FLAMMABLE AND EXPLOSIVE! Take care not to spill gasoline.
Gasohol containing ethanol can be used if ethanol content does not exceed 10% and the fuel meets minimum octane ratings. Yamaha does not recommended gasohol containing methanol because it can cause fuel system damage or engine performance problems.
Yamaha outboard motors are fitted with pro- pellers chosen to perform well over a range For instructions on propeller removal and in- of applications, but there may be uses where stallation, see page 53.
Basic components EMU25795 Main components NOTE: * May not be exactly as shown; also may not be included as standard equipment on all mod- els. V150D ZMU04671 1. Top cowling 15. Tachometer* 2. Choke knob 16. Trim meter* 3. Top cowling lock lever(s) 17.
Basic components 6. Throttle 7. Fully open EMU26201 Neutral interlock trigger To shift out of neutral, first pull the neutral in- terlock trigger up. 1. Power trim and tilt switch 2. Remote control lever 3. Neutral interlock trigger 4. Neutral throttle lever 5.
Basic components adjuster counterclockwise. EWM00030 WARNING Do not overtighten the friction adjuster. If there is too much resistance, it could be difficult to move throttle lever or grip, which could result in an accident. 1. Fully open 2. Fully closed EMU26221 Choke switch To activate the choke system, press in the...
Basic components during normal operation. Loss of en- “ ” (off) gine power means the loss of most With the main switch in the “ ” (off) posi- steering control. Also, without engine tion, the electrical circuits are off, and the key power, the boat could slow rapidly.
Basic components ZMU03517 EMU26151 NOTE: Power trim and tilt switch on bottom For instructions on using the power trim and engine cowling tilt switch, see page 36. The power trim and tilt switch is located on EMU26240 the side of the bottom engine cowling. Press- Trim tab with anode ing the switch “...
Basic components 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.
Basic components ZMU03940 ZMU01958 1. Flushing device 1. Tachometer 2. Trim meter EMU26470 3. Hour meter Tachometer 4. Oil level indicator This gauge shows the engine speed and has 5. Overheat warning indicator the following functions. 6. Water separator warning indicator 7.
Basic components page 21. ECM00050 CAUTION: Do not continue to run the engine if the overheat warning indicator is on. Serious engine damage will occur. ZMU04580 1. Oil level indicators EMU26550 Oil level indicator (digital type) This indicator shows the engine oil level. If the oil level falls below the lower limit, the ZMU01868 warning indicator will start to blink.
Basic components turning on the main switch to make sure all power trim and tilt switch. segments come on. EMU26620 Trim meter (digital type) NOTE: This meter shows the trim angle of your out- The speedometer displays km/h, mph, or board motor.
The trip distance is shown in kilometers or CAUTION: miles depending upon the unit of measure- The Yamaha fuel tank sensor differs from ment selected for the speedometer. conventional sensors. Incorrectly setting The trip distance is kept in memory by bat- the selector switch on the gauge will give tery power.
Do not continue to operate the engine if a activated. Get back to the port within troll- warning device has activated. Consult ing engine speed. your Yamaha dealer if the problem can- not be located and corrected. EMU26812 Overheat warning This engine has an overheat warning device.
Basic components ZMU02630 ZMU01757 EMU26843 Oil level warning and oil filter clogging warning Oil injection models This engine has an oil level warning system. If the oil level falls below the lower limit, the warning system will activate. Activation of warning device Engine speed will automatically decrease ZMU04766 to about 2000 r/min.
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Basic components The buzzer will sound. ZMU01952 ZMU03025 If the warning system has been activated, 1. Oil filter 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.
Operation EMU26901 specific boat and motor combination. Installation EWM00830 ECM00110 WARNING CAUTION: Improper mounting of the outboard mo- Incorrect engine height or obstructions tor could result in hazardous conditions to smooth water flow (such as the design such as poor handling, loss of control, or or condition of the boat, or accessories fire hazards.
Be sure to mix gasoline and oil complete- mine the optimum mounting height. Con- ly, otherwise the engine may be dam- sult your Yamaha dealer boat aged. manufacturer for further information on de- EMU30310 termining the proper mounting height.
Operation throttle to 3000 r/min or less. are tight (if equipped Yamaha fuel tank or Second hour: boat tank). Accelerate at full throttle onto plane, Be sure the fuel tank is positioned on a se- then reduce engine speed to three-quar- cure, flat surface, and that the fuel line is ter throttle (approximately 4000 r/min).
Yamaha recommends the use of Ring Free Fuel Additive, available from Be sure to take the above steps when op- your Yamaha dealer. Ring Free Fuel Addi- erating the engine after a long period of tive has repeatedly proven its ability to clean storage.
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Pour engine oil into the remote oil tank. Engine oil tank capacity: 0.9 L (0.95 US qt) (0.79 Imp.qt) ZMU01877 Turn on the main switch. The Yamaha oil injection system will automatically feed oil from the remote oil tank to the engine oil tank.
Operation EMU27321 Oil level indicator operation The various functions of the oil level system are as follows: EMU27381 Oil level indicator Electric start models Oil level warning Oil level warning Engine oil Remote oil indicator indicator (analog Remarks tank tank (digital tachometer) tachometer)
Operation EMU27450 Operating engine EMU27480 Feeding fuel EWM00420 WARNING Before starting the engine, make sure that the boat is tightly moored and that you can steer clear of any obstructions. Be sure there are no swimmers in the water near you. EMU27490 When the air vent screw is loosened, Starting engine...
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Operation lanyard where it could become entan- gled, preventing it from functioning. Avoid accidentally pulling the lanyard during normal operation. Loss of en- gine 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.
Stop the engine and check whether the cooling water inlet on the lower case or the cooling water pilot hole is blocked. Consult your Yamaha dealer if Immediately after the engine starts, re- the problem cannot be located and cor- lease the main switch and allow it to re- rected.
Operation EMU27763 lever quickly and firmly from neutral to Forward (tiller handle and remote reverse. control models) Tiller control models Place the throttle grip in the fully closed position. Move the gear shift lever quickly and firmly from neutral to forward. Remote control models Pull up the neutral interlock trigger (if equipped) and move the remote control...
Operation engine stop switch, then turning the main switch to “ ” (off). EMU27861 Trimming outboard motor The trim angle of the outboard motor helps determine the position of the bow of the boat in the water. Correct trim angle will help im- prove performance and fuel economy while reducing strain on the engine.
Operation Adjust the outboard motor trim angle using results in less drag, greater stability and effi- the power trim and tilt switch. ciency. This is generally when the keel line of the boat is up about 3 to 5 degrees. With the bow up, the boat may have a greater tenden- cy to steer to one side or the other.
Operation Bow Down bracket. Too much trim-in causes the boat to “plow” EWM00250 through the water, decreasing fuel economy WARNING and making it hard to increase speed. Oper- Leaking fuel is a fire hazard. If there is a ating with excessive trim-in at higher speeds fuel joint on the outboard motor, discon- also makes the boat unstable.
Operation sure. Models equipped with trim rods: Once the outboard motor is supported with the tilt support lever, press the power trim and tilt switch “ ” (down) to retract the trim rods. ECM00250 CAUTION: Be sure to retract the trim rods complete- ly during mooring.
Operation to allow operation in shallow water. EWM00660 WARNING Place the gear shift in neutral before setting up for shallow water cruising. Return the outboard motor to its normal position as soon as the boat is back in deeper water. ECM00260 ZMU03453 CAUTION:...
NOTE: For cooling system flushing instructions, see page 41. Cruising in turbid water Yamaha strongly recommends that you use the optional chromium-plated water pump kit if you use the outboard motor in turbid (mud- dy) water conditions.
The outboard ing Silicon, Phosphorus, or Lead. Con- motor could shake loose from the tilt sup- sult your Yamaha dealer for details on the port and fall. If the motor cannot be trail- use of chemical goods for storage.
Maintenance mandatory to prevent excessive engine NOTE: damage due to rust. Perform the flush- The use of “Yamaha Fuel Conditioner and ing and fogging at the same time. Stabilizer” eliminates the need to drain the EWM00090 fuel system. Consult your Yamaha dealer or...
FLUID OUT OF REACH OF CHILDREN. seal. Seal replacement should be per- Batteries vary among manufacturers. There- formed by an authorized Yamaha dealer fore the following procedures may not al- prior to use. ways apply.
A touch-up paint is avail- ECM00540 CAUTION: able from your Yamaha dealer. Do not leave the garden hose connector loose on the bottom cowling fitting or let the hose hang free during normal opera-...
If you or the owner is not famil- iar with machine servicing, this work should be done by your Yamaha dealer or other qualified mechanic. Maintenance, replacement, or repair of the emission control devices and sys- tems may be performed by any marine engine repair establishment or individual.
Refer to the sections in this chapter for explanations of each owner-specific action. The “ ” symbol indicates the check-ups which you may carry out yourself. The “ ” symbol indicates work to be carried out by your Yamaha dealer. Initial Every 50 hours Item...
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Maintenance Initial Every 50 hours Item Actions 10 hours hours (6 hours (1 (1 month) months) months) year) Cleaning / adjustment / Spark plug(s) replacement NOTE: When operating in salt water, turbid or muddy water, the engine should be flushed with clean water after each use.
Maintenance EMU28931 Greasing Yamaha marine grease (Water resistant grease) V150D ZMU04675 sparks, which could lead to explosion or EMU28951 Cleaning and adjusting spark plug fire. EWM00560 The spark plug is an important engine com- WARNING ponent and is easy to inspect. The condition...
Check the fuel lines for leaks, crack, or mal- 1. Spark plug gap function. If a problem is found, your Yamaha 2. Spark plug I.D. mark (NGK) dealer or other qualified mechanic should re- pair it immediately.
If you have any question about properly necessary. If any water is found in the doing this procedure, consult your fuel, the Yamaha portable fuel tank or Yamaha dealer. other fuel tanks should be checked and Do not perform this procedure on a hot cleaned.
If water or foreign matter is vis- parts while the engine is running. ible in this trap, consult your Yamaha dealer. 2-hp models: The propeller rotates whenever the engine is running. Do not move the throttle control lever from the start position during warm-up.
Maintenance ZMU03458 ZMU03915 EMU29120 1. Tilt rod Exhaust leakage 2. Trim rods Start the engine and check that no exhaust leaks from the joints between the exhaust Use the tilt support lever to lock the mo- cover, cylinder head, and body cylinder. tor in the up position.
Unlock the tilt sup- port lever. ZMU01896 ZMU03460 Tilt the outboard motor down. Check that the tilt rod and trim rods operate smoothly. NOTE: Consult your Yamaha dealer if any operation is abnormal. EMU29171 Checking propeller ZMU01897 EWM00321 Checkpoints WARNING...
NOTE: eration and be lost. If the shear pin equipped: it is designed to Apply Yamaha marine grease or a cor- break if the propeller hits a hard underwater rosion resistant grease to the propeller obstacle to help protect the propeller and shaft.
You could be severely injured if the outboard motor falls on you. NOTE: Never get under the lower unit while it For disposal of used oil consult your Yamaha is tilted, even when the tilt support lever dealer. or knob is locked. Severe injury could...
Maintenance external anodes periodically. Remove scales contains sulfuric acid and therefore is from the surfaces of the anodes. Consult a poisonous and highly caustic. Yamaha dealer for replacement of external Always follow these preventive mea- anodes. sures: ECM00720 Avoid bodily contact with electrolytic...
Electric system damage and a fire of the fluid at least once a month and re- could result. charge the battery when it is low. NOTE: Consult a Yamaha dealer when charging or re-charging batteries. EMU29341 Connecting the battery EWM00570...
5. Negative connecting cable 6. Power for accessories 7. Small red lead for accessory battery charg- ing (optional part) NOTE: Consult your Yamaha dealer about correct wiring if a battery selector switch is desired. ZMU01943 EMU29370 Disconnecting the battery Disconnect the BLACK cable from the NEG- ATIVE (-) terminal first.
Q. Has fuel pump malfunctioned? If your outboard motor requires repair, bring A. Have serviced by a Yamaha dealer. it to your Yamaha dealer. If the engine trouble warning indicator is Q. Are spark plug(s) fouled or of incorrect flashing, consult your Yamaha dealer.
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Q. Is fuel contaminated or stale? A. Fill tank with clean, fresh fuel. Q. Is carburetor clogged? A. Have serviced by a Yamaha dealer. Q. Is fuel filter clogged? A. Clean or replace filter. Q. Is fuel joint connection incorrect? A.
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Trouble Recovery A. Have serviced by a Yamaha dealer. Q. Are weeds or other foreign matter tangled on gear housing? Q. Is load on boat improperly distributed? A. Remove foreign matter and clean lower A. Distribute load to place boat on an even unit.
Make sure the remote control lever NOTE: is in neutral. Otherwise the boat could Consult your Yamaha dealer if the new fuse unexpectedly start to move, which immediately blows again. could result in an accident.
Trouble Recovery starter mechanism or top cowling after the engine is running. Do not touch the ignition coil, spark ON START plug wire, spark plug cap, or other elec- trical components when starting or op- erating the motor. You could get an electrical shock.
Trouble Recovery or stopping. ECM00380 CAUTION: Follow this procedure only in an emer- gency and just long enough to return to port for repairs. ZMU03466 EMU29670 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 ZMU03924 engine speed may become erratic or the en-...
EMU29760 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-...
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Feed fogging oil or engine oil through the carburetor(s) and spark plug holes while cranking with the manual starter or emergency starter rope. ZMU01911 Take the outboard motor to a Yamaha dealer as soon as possible. ECM00400 CAUTION: Do not attempt to run the outboard motor...
Consumer information EMU29840 IMPORTANT WARRANTY INFORMATION IF YOU USE YOUR YAMAHA OUTSIDE U.S.A. OR CANADA...
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Printed in Japan April 2004–1.2 × 1 ! Printed on recycled paper...
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(A l’usage du concessionnaire) MODÉLE ET NO. DE SÉRIE DU MOTEUR HORS-BORD (sur l’étiquette d’identification de la presse de fixation) YAMAHA DEALER NUMBER NO. DU CONCESSIONNAIRE YAMAHA DEALER NAME YAMAHA MOTOR CO., LTD. NOM DU MADE IN JAPAN CONCESSIONNAIRE PAYS D'ORIGINE JAPON USAGE...
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PLACE POSTAGE HERE ATTN: WARRANTY DEPARTMENT...
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