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- Yamaha
- Outboard Motor
- 150
- Owner's Manual
Yamaha 150 Owner's Manual
Summary of 150
Page 1
150 owner’s manual 64c-28199-1c u.S.A.Edition lit-18626-06-98 64c-9-1c hyoshi 06.2.9 3:56 pm ページ 1.
Page 2
Emu25060 zmu01690 read this owner’s manual carefully before operating your outboard motor. 64c-9-1c hyoshi 06.2.9 3:56 pm ページ 2.
Page 3: Important Manual Information
Important manual information emu31280 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 ...
Page 4: Table of Contents
Table of contents general information .......................... 1 identification numbers record .......... 1 outboard motor serial number .......... 1 key number....................................... 1 emission control information ........... 1 north american models..................... 1 safety i...
Page 5: Table of Contents
Table of contents forward (tiller handle and remote control models) ............................. 33 reverse (automatic reverse lock and power trim and tilt models)..... 33 stopping engine ............................ 33 procedure ....................................... 33 trimming outboard motor .....
Page 6: General Information
1 general information emu25170 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. Record your outboard motor serial number in the spaces provided to assist you in ordering spare ...
Page 7: General Information
General information 2 emu25262 manufactured date label this label is attached to the clamp bracket or the swivel bracket. Emu25362 safety information ● before mounting or operating the outboard motor, read this entire manual. Reading it should give you an understanding of the motor and its operation...
Page 8: General Information
General information 3 clude nausea, dizziness, and drowsiness. Keep cockpit and cabin areas well ventilat- ed. Avoid blocking exhaust outlets. ● check throttle, shift, and steering for prop- er operation before starting the engine. ● attach the engine stop switch lanyard cord to a secure place on yo...
Page 9: General Information
General information 4 emu25401 label warning ewm01260 ● 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 ru...
Page 10: General Information
General information 5 operator of the other vessel can see what you are doing. “the general prudential rule” this rule is called rule 2 in the international rules and says, “in obeying and construing these rules due regard shall be had to all dangers of naviga- tion and collision, and to any special...
Page 11: General Information
General information 6 overtaking if you are passing another vessel, you are the “give-way” vessel. This means that the other vessel is expected to maintain its course and speed. You must stay out of its way until you are clear of it. Likewise, if an- other vessel is passing you, you should maintain ...
Page 12: General Information
General information 7 this system uses buoys and signs with dis- tinctive shapes and colors to show regulato- 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, m...
Page 13: General Information
General information 8 emu25540 fueling instructions warning ewm00010 gasoline and its vapors are high- ly flammable and explosive! ● do not smoke when refueling, and keep away from sparks, flames, or other sources of ignition. ● stop engine before refueling. ● refuel in a well-ventilated area. Refue...
Page 14: General Information
General information 9 dry rags. ● do not overfill the fuel tank. ● tighten the filler cap securely after re- fueling. ● if you should swallow some gasoline, inhale a lot of gasoline vapor, or get gasoline in your eyes, get immediate medical attention. ● if any gasoline spills onto your skin, im- med...
Page 15: General Information
General information 10 emu25711 battery specifications emu25742 propeller selection the performance of your outboard motor will be critically affected by your choice of propel- ler, as an incorrect choice could adversely affect performance and could also seriously damage the motor. Engine speed depe...
Page 16: Basic Components
11 basic components emu25797 main components note: * may not be exactly as shown; also may not be included as standard equipment on all mod- els. 150 emu26180 remote control the remote control lever actuates both the shifter and the throttle. The electrical switch- es are mounted on the remote contr...
Page 17: Basic Components
Basic components 12 emu26190 remote control lever moving the lever forward from the neutral po- sition engages forward gear. Pulling the le- ver back from neutral engages reverse. The engine will continue to run at idle until the le- ver is moved about 35° (a detent can be felt). Moving the lever fa...
Page 18: Basic Components
Basic components 13 emu26221 choke switch to activate the choke system, press in the main switch while the key is turned to the “ ” (on) or “ ” (start) position. The choke system will then supply the rich fuel mixture required to start the engine. When the key is released, the choke will switch off ...
Page 19: Basic Components
Basic components 14 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 t...
Page 20: Basic Components
Basic components 15 emu26151 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, then tilts it up. Pressing the switch “ ” (down) tilts the outboard motor d...
Page 21: Basic Components
Basic components 16 emu26340 tilt support lever for power trim and tilt or hydro tilt model to keep the outboard motor in the tilted up position, lock the tilt support lever to the clamp bracket. Emu26382 top cowling lock lever (pull up type) to remove the engine top cowling, pull up the lock lever(...
Page 22: Basic Components
Basic components 17 emu26470 tachometer this gauge shows the engine speed and has the following functions. Emu26491 digital tachometer the tachometer shows the engine speed and has the following functions. Note: all segments of the display will light momen- tarily after the main switch is turned on ...
Page 23: Basic Components
Basic components 18 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 22. Caution: ecm00030 do not operate the engine without oil. Se- rio...
Page 24: Basic Components
Basic components 19 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 unit of measurement by set- ting the selector switch on the back of the gauge. See the illustration for setting...
Page 25: Basic Components
Basic components 20 ● 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 ...
Page 26: Basic Components
Basic components 21 tor switch. Note: the fuel level reading can be affected by the position of the sensor in the fuel tank and the attitude of the boat in the water. Operation with bow-up trim or continuous turning can give false readings. Emu26720 fuel warning indicator if the fuel level decreases...
Page 27: Basic Components
Basic components 22 ● the buzzer will sound (if equipped on the tiller handle, remote control box, or main switch panel). If the warning system has activated, stop the engine and check the cooling water inlet for clogging. Emu26846 oil level warning and oil filter clogging warning oil injection mode...
Page 28: Basic Components
Basic components 23 ● 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 over...
Page 29: Operation
24 operation emu26901 installation caution: ecm00110 incorrect engine height or obstructions to smooth water flow (such as the design or condition of the boat, or accessories such as transom ladders or depth finder transducers) can create airborne water spray while the boat is cruising. Severe engin...
Page 30: Operation
Operation 25 motor greatly affects the water resistance. If the mounting height is too high, cavitation tends to occur, thus reducing the propulsion; and if the propeller tips cut the air, the engine speed will rise abnormally and cause the en- gine to overheat. If the mounting height is too low, th...
Page 31: Operation
Operation 26 throttle to 3000 r/min or less. 3. Next two hours: accelerate at full throttle onto plane, then reduce engine speed to three-quar- ter throttle (approximately 4000 r/min). Vary engine speed occasionally. Run at full throttle for one minute, then allow about 10 minutes of operation at th...
Page 32: Operation
Operation 27 pipes. After any air in the oil lines has been expelled, the oil injection system should supply oil normally. If no oil is flowing after 10 minutes of idling, consult your yamaha dealer. Caution: ecm00130 be sure to take the above steps when op- erating the engine after a long period of...
Page 33: Operation
Operation 28 1. Pour engine oil into the remote oil tank. Note: the oil level lines on the remote oil tank indi- cate the amount of additional oil that can be added to the tank. The top oil level line indi- cates approximately 1.9 l (0.5 us gal, 0.4 imp gal) can be added, and the bottom oil level li...
Page 34: Operation
Operation 29 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 indicator (digital tachometer) oil level warning indicator (analog tachometer) engine oil tank remote oil tank remark...
Page 35: Operation
Operation 30 emu27450 operating engine emu27482 feeding fuel warning ewm00420 ● 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. ● when the air vent screw is loosened, gasoline...
Page 36: Operation
Operation 31 your arm or leg while operating. ● 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. ● avoid accidentally pulling the lanyard during normal operation. Loss of en- gine power means the ...
Page 37: Operation
Operation 32 7. Immediately after the engine starts, re- lease the main switch and allow it to re- turn to “ ” (on). Caution: ecm00191 ● never turn the main switch to “ ” (start) while the engine is running. ● do not keep the starter motor turning for more than 5 seconds. If the starter motor is tur...
Page 38: Operation
Operation 33 emu27764 forward (tiller handle and remote control models) tiller handle models 1. Place the throttle grip in the fully closed position. 2. Move the gear shift lever quickly and firmly from neutral to forward. Remote control models 1. Pull up the neutral interlock trigger (if equipped) ...
Page 39: Operation
Operation 34 turn the main switch to “ ” (off). 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). 4. Remove the key if the boat will be left unattended. Note: the engine can also be...
Page 40: Operation
Operation 35 board motor when adjusting the tilt an- gle, also be careful not to pinch any body parts between the drive unit and clamp bracket. ● use caution when trying a trim position for the first time. Increase speed gradu- ally and watch for any signs of instabil- ity or control problems. Impro...
Page 41: Operation
Operation 36 bow down too much trim-in causes the boat to “plow” through the water, decreasing fuel economy and making it hard to increase speed. Oper- ating with excessive trim-in at higher speeds also makes the boat unstable. Resistance at the bow is greatly increased, heightening the danger of “b...
Page 42: Operation
Operation 37 2. Disconnect the fuel line from the out- board motor or close the fuel cock. 3. Press the power trim and tilt switch / power tilt switch “ ” (up) until the out- board motor has tilted up completely. 4. Push the tilt support knob into the clamp bracket or pull the tilt support lever to-...
Page 43: Operation
Operation 38 3. Push the power trim and tilt switch / pow- er tilt switch “ ” (down) to lower the out- board motor to the desired position. Emu28060 cruising in shallow water the outboard motor can be tilted up partially to allow operation in shallow water. Emu28090 power trim and tilt models / powe...
Page 44: Operation
Operation 39 3. To return the outboard motor to the nor- mal running position, press the power trim and tilt switch / power tilt switch and slowly tilt the outboard motor down. Emu28192 cruising in other conditions cruising in salt water after operating in salt water, flush the cooling water passage...
Page 45: Maintenance
40 maintenance emu31480 specifications note: “(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. Emu28218 dimens...
Page 46: Maintenance
Maintenance 41 remote oil tank capacity: 10.5 l (11.10 us qt) (9.24 imp.Qt) recommended gear oil: hypoid gear oil sae#90 gear oil quantity: 980.0 cm 3 (33.13 us oz) (34.56 imp.Oz) tightening torque for engine: spark plug: 25.0 nm (18.4 ft-lb) (2.55 kgf-m) propeller nut: 55.0 nm (40.6 ft-lb) (5.61 kg...
Page 47: Maintenance
Maintenance 42 and stabilizer” (part no. Lub-fuelc- 12-00) to each gallon of fuel. Note: 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. 3. Remove the...
Page 48: Maintenance
Maintenance 43 3. Change the gear oil. For instructions, see page 54. Inspect the oil for the pres- ence of water which indicates a leaky seal. Seal replacement should be per- formed by an authorized yamaha dealer prior to use. 4. Grease all grease fittings. For further de- tails, see page 48. Emu28...
Page 49: Maintenance
Maintenance 44 overheating can result. 1. After shutting off the engine, unscrew the garden hose connector from the fit- ting on the bottom cowling. 2. Screw the garden hose adapter onto a garden hose, which is connected to a fresh water supply, and then connect it to the garden hose connector. 3. W...
Page 50: Maintenance
Maintenance 45 more likely to corrode. If necessary, clean and paint the areas. A touch-up paint is avail- able from your yamaha dealer. Emu28486 periodic maintenance warning ewm01070 be sure to turn off the engine when you perform maintenance unless otherwise specified. If you or the owner is not f...
Page 51: Maintenance
Maintenance 46 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 ...
Page 52: Maintenance
Maintenance 47 water pump inspection / replace- ment oil pump inspection / adjustment oil tank water drain inspection / cleaning spark plug(s) cleaning / adjustment / replacement item actions initial every 10 hours (1 month) 50 hours (3 months) 100 hours (6 months) 200 hours (1 year).
Page 53: Maintenance
Maintenance 48 emu28931 greasing yamaha marine grease (water resistant grease) 150 emu28952 cleaning and 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 explos...
Page 54: Maintenance
Maintenance 49 ple, if the center electrode porcelain is very white, this could indicate an intake air leak or carburetion problem in that cylinder. Do not attempt to diagnose any problems yourself. Instead, take the outboard motor to a yamaha dealer. You should periodically re- move and inspect the...
Page 55: Maintenance
Maintenance 50 checkpoints ● fuel system parts leakage ● fuel line joint leakage ● fuel line cracks or other damage ● fuel connector leakage emu28980 inspecting fuel filter warning ewm00310 gasoline is highly flammable, and its va- pors are flammable and explosive. ● if you have any question about p...
Page 56: Maintenance
Maintenance 51 4. Reinstall the filter element in the cup. Make sure the o-ring is in position in the cup. Firmly screw the cup onto the filter housing. 5. Attach the filter assembly to the bracket so that the fuel hoses are attached to the filter assembly. 6. Run the engine and check the filter and...
Page 57: Maintenance
Maintenance 52 cover, cylinder head, and body cylinder. Emu29130 water leakage start the engine and check that no water leaks from the joints between the exhaust cover, cylinder head, and body cylinder. Emu29153 checking power trim and tilt system warning ewm00430 ● never get under the lower unit wh...
Page 58: Maintenance
Maintenance 53 smoothly. Note: consult your yamaha dealer if any operation is abnormal. Emu29171 checking propeller warning ewm00321 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, remov...
Page 59: Maintenance
Maintenance 54 emu30660 removing the propeller emu29194 spline models 1. Straighten the cotter pin and pull it out using a pair of pliers. 2. Remove the propeller nut, washer, and spacer (if equipped). 3. Remove the propeller and thrust wash- er. Emu30670 installing the propeller emu29231 spline mod...
Page 60: Maintenance
Maintenance 55 oil drain screw is at the lowest point pos- sible. 2. Place a suitable container under the gear case. 3. Remove the gear oil drain screw and gasket. Note: ● if a magnetic gear oil drain screw is equipped, remove all metal particles from the screw before installing it. ● always use new...
Page 61: Maintenance
Maintenance 56 yamaha dealer for inspection and replace- ment of internal anodes attached to the pow- er unit. Emu29320 checking battery (for electric start models) warning ewm00330 battery electrolytic fluid is dangerous; it contains sulfuric acid and therefore is poisonous and highly caustic. Alwa...
Page 62: Maintenance
Maintenance 57 2. Always keep the battery 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, re- move the battery from the boat and store it in a cool, dark place. Completely re- charge the battery before using it. ...
Page 63: Maintenance
Maintenance 58 wire equivalent to the starting battery cable. Warning ewm00600 use of smaller wire could lead to a fire. Note: consult your yamaha dealer about correct wiring if a battery selector switch is desired. Emu29370 disconnecting the battery disconnect the black cable from the neg- ative (-...
Page 64: Trouble Recovery
59 trouble recovery emu29424 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. Therefore some items may not apply to ...
Page 65: Trouble Recovery
Trouble recovery 60 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. Q. Have ignition parts failed? A. Have servic...
Page 66: Trouble Recovery
Trouble recovery 61 a. Have serviced by a yamaha dealer. 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. Engine ...
Page 67: Trouble Recovery
Trouble recovery 62 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. Q. Is engine not responding...
Page 68: Trouble Recovery
Trouble recovery 63 note: consult your yamaha dealer if the new fuse immediately blows again. Emu29522 power trim and tilt / power tilt will not operate if the engine cannot be tilted up or down with the power trim and tilt / the power tilt because of a discharged battery or a failure with the power...
Page 69: Trouble Recovery
Trouble recovery 64 engine. Use the emergency starter rope only as instructed. Do not touch the fly- 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 ...
Page 70: Trouble Recovery
Trouble recovery 65 7. Give a strong pull straight out to crank and start the engine. Repeat if neces- sary. 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 engine speed may become err...
Page 71: Trouble Recovery
Trouble recovery 66 unless the oil level warning indicators are working. 1. Remove the top cowling. 2. Turn on the main switch. 3. Lift the emergency switch to pump re- serve oil into the engine oil tank from the remote oil tank. 4. After using the emergency switch, turn off the main switch, then tu...
Page 72: Trouble Recovery
Trouble recovery 67 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 carburetor, fuel filter, and fuel line. 4. Feed fogging oil or engine oil through the carburetor(s) and spark plug holes while cranking w...
Page 73: Consumer Information
68 consumer information emu29811 important warranty information for u.S.A. And canada.
Page 74: Consumer Information
Consumer information 69.
Page 75: Consumer Information
Consumer information 70 emu29820 yamaha motor corporation, u.S.A. Outboard motor two year limited warranty.
Page 76: Consumer Information
Consumer information 71.
Page 77: Consumer Information
Consumer information 72.
Page 78: Consumer Information
Consumer information 73 emu29841 important warranty information if you use your yamaha outside the usa or canada.
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64c-9-1c hyoshi 06.2.9 3:56 pm ページ 3.
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Printed in japan may 2006–0.1 × 1 ! Printed on recycled paper 64c-9-1c hyoshi 06.2.9 3:56 pm ページ 4.
Page 81
Yamaha motor co., ltd. Made in japan pays d'origine japon outboard motor warranty registration enregistrement de la garantie du moteur hors-bord please complete and mail this card. This information is necessary to accurately register your unit for warranty. Veuillez signer ci-dessous pour attester q...
Page 82: Attn: Warranty Department
Place postage here attn: warranty department warranty card-04 2/17/03 2:41 pm page 2.