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Read this owner’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.
If there is any To the owner question concerning this manual, please con- Thank you for choosing a Yamaha outboard sult your Yamaha dealer. motor. This Owner’s Manual contains infor- To ensure long product life, Yamaha recom-...
Table of contents Fuel gauge ......... 9 General information ......1 Fuel tank cap........9 Identification numbers record ..1 Air vent screw ........9 Outboard motor serial number ... 1 Tiller handle ........9 EC label........... 1 Gear shift lever ........9 Important labels.......
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Table of contents Shifting .......... 22 Cleaning fuel tank......40 Inspecting and replacing anode(s) ... 41 Stopping boat ........ 23 Checking top cowling ....... 41 Stopping engine ......23 Coating the boat bottom ....42 Procedure......... 23 Trimming outboard motor ....23 Trouble Recovery......
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- 1. EC label location len.
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General information Do not touch or remove electrical parts when starting or during operation. Keep hands, hair, and clothes away from flywheel and other rotating parts while engine is running. EMU25431 Label EWM01300 WARNING This engine is equipped with a neutral starting device.
Safety information EMU33620 Do not route the cord where it is likely to be Safety information accidentally pulled out. If the cord is pulled Observe these precautions at all times. during operation, the engine will shut off and EMU33630 you will lose most steering control. The boat Rotating parts could slow rapidly, throwing people and ob- Hands, feet, hair, jewelry, clothing, PFD...
Have an approved personal flotation device distribution can compromise the boats han- (PFD) on board for every occupant. Yamaha dling and lead to an accident, capsizing or recommends that you must wear a PFD swamping. whenever boating. At a minimum, children...
Safety information EMU33790 Weather Stay informed about the weather. Check weather forecasts before boating. Avoid boat- ing in hazardous weather. EMU33880 Passenger training Make sure at least one other passenger is trained to operate the boat in the event of an emergency.
Basic requirements EMU25540 If knocking or pinging occurs, use a different Fueling instructions brand of gasoline or premium unleaded fuel. EWM00010 EMU25650 WARNING Engine oil GASOLINE AND ITS VAPORS ARE HIGH- Recommended engine oil: LY FLAMMABLE AND EXPLOSIVE! YAMALUBE 2-stroke outboard motor Do not smoke when refueling, and keep away from sparks, flames, or other sources of ignition.
Yamaha outboard motors affixed with the pic- Your Yamaha dealer can help you select the tured label or Yamaha-approved remote con- right propeller for your boating needs. Select trol units are equipped with start-in-gear a propeller that will allow the engine to reach protection device(s).
Basic components EMU2579B Main components NOTE: * May not be exactly as shown; also may not be included as standard equipment on all models. 9.9F, 15F 1. Top cowling 17.Cooling water inlet 2. Top cowling lock lever 18.Propeller* 3. Cooling water pilot hole 19.Fuel tank...
Basic components mercial users should conform to relevant licensing or approval authority regula- tions. EMU25922 Gear shift lever Pulling the gear shift lever towards you puts the engine in forward gear so that the boat 1. Fuel joint moves ahead. Pushing the lever away from 2.
Basic components EWM00031 WARNING Do not overtighten the friction adjuster. If there is too much resistance, it could be difficult to move the remote control lever or throttle grip, which could result in an accident. EMU25961 Throttle indicator The fuel consumption curve on the throttle in- dicator shows the relative amount of fuel con- sumed for each throttle position.
Basic components Avoid accidentally pulling the cord dur- EMU26030 Choke knob ing normal operation. Loss of engine To supply the engine with the rich fuel mixture power means the loss of most steering required to start, pull out this knob. The choke control.
Basic components EMU26122 EMU30440 Steering friction adjuster Tilt lock mechanism A friction device provides adjustable resis- The tilt lock mechanism is used to prevent the tance to the steering mechanism, and can be outboard motor from lifting out of the water set according to operator preference.
1. Top cowling lock lever(s) EMU26410 2-pin connector AC 12 V-40/60/80W power is delivered through this connector. When using it, keep in mind the following points: Use a genuine Yamaha connector. Use lighting equipment only. Connect lighting equipment directly to the 2-pin connector.
Operation EMU26902 Installation The information presented in this section is in- tended as reference only. It is not possible to provide complete instructions for every possi- ble boat and motor combination. Proper mounting depends in part on experience and the specific boat and motor combination. EWM01590 WARNING ZMU01760...
Otherwise the optimum mounting height. Consult your the engine could be completely lost if it Yamaha dealer or boat manufacturer for accidentally falls off the transom. further information on determining the prop- er mounting height.
CAUTION: using the bolts provided with the out- Be sure to mix gasoline and oil complete- board (if packed). For details, consult ly, otherwise the engine may be damaged. your Yamaha dealer. EWM00650 EMU27074 WARNING Procedure for pre-mixed models Avoid using bolts, nuts or washers other...
Check fuel line connections to be sure they 25.0 L (6.61 US gal) (5.50 Imp.gal) are tight (if equipped Yamaha fuel tank or boat tank). EMU27405 Gasoline and oil mixing (100:1) Be sure the fuel tank is positioned on a se-...
Operation If equipped with a portable fuel tank ECM00811 CAUTION: Pour oil into the portable fuel tank, and Avoid using any oil other than the spec- then add gasoline. ified type. Use a thoroughly blended fuel-oil mix- ture. If the mixture is not thoroughly mixed, or if the mixing ratio is incorrect, the fol- lowing problems could occur.
Operation toms include nausea, dizziness, and If a steering friction adjuster is provided drowsiness. Keep cockpit and cabin ar- on your outboard motor, securely attach eas well ventilated. Avoid blocking ex- the fuel line to the fuel line clamp. haust outlets. NOTE: During engine operation place the tank hori- If there is an air vent screw on the fuel...
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Operation Place the throttle grip in the “ ” NOTE: (start) position. The start-in-gear protection device prevents the engine from starting except when in neu- tral. Attach the engine shut-off cord to a se- cure place on your clothing, or your arm or leg.
Operation EMU34550 Shifting EWM00180 WARNING Before shifting, make sure there are no swimmers or obstacles in the water near you. ECM01610 CAUTION: Warm up the engine before shifting into gear. Until the engine is warm, the idle To shift from in gear (forward/reverse) to neu- speed may be higher than normal.
Operation EMU31742 After stopping the engine, tighten the air Stopping boat vent screw on the fuel tank cap and set EWM01510 the fuel cock lever or knob to the closed WARNING position, if equipped. Do not use the reverse function to slow down or stop the boat as it could cause you to lose control, be ejected, or impact the steering wheel or other parts of the...
Operation engine, and propeller. Correct trim is also af- fected by variables such as the load in the boat, sea conditions, and running speed. EWM00740 WARNING Excessive trim for the operating condi- tions (either trim up or trim down) can cause boat instability and can make steer- ing the boat more difficult.
Operation bow up, the boat may have a greater tenden- also makes the boat unstable. Resistance at cy to steer to one side or the other. Compen- the bow is greatly increased, heightening the sate for this as you steer. The trim tab can danger of “bow steering”...
Operation ECM00241 Push the tilt support knob into the clamp CAUTION: bracket. Or the tilt support bar will turn to Before tilting the outboard motor, stop the lock position automatically. the engine by following the procedure on page 23. Never tilt the outboard mo- tor while the engine is running.
Operation Slowly tilt the engine down. EMU28060 Cruising in shallow water The outboard motor can be tilted up partially to allow operation in shallow water. EMU28071 Cruising in shallow water (manual tilt models) EWM00710 WARNING ZMU02868 Place the gear shift in neutral before us- ing the shallow water cruising system.
Cruising in muddy or turbid water Yamaha strongly recommends 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 sedi- ment in it, such as muddy or other turbid (cloudy) water.
Maintenance EMU31480 Spark plug (NGK): Specifications BR7HS-10 Spark plug gap: NOTE: 0.9–1.0 mm (0.035–0.039 in) “(AL)” stated in the specification data below Control system: represents the numerical value for the alumi- Tiller Starting system: num propeller installed. Manual Likewise, “(SUS)” represents the value for Starting carburetion system: stainless steel propeller installed and “(PL)”...
Sound power level (ICOMIA 39/94 and 40/94): tion using a motor support device such as a 92.1 dB(A) transom saver bar. Consult your Yamaha Vibration on tiller handle (ICOMIA 38/94): dealer for further details. Vibration on tiller handle is under 2.5 m/s²...
Maintenance It is advisable to have your outboard motor serviced by an authorized Yamaha dealer pri- or to storage. However, you, the owner, with a minimum of tools, can perform the following procedures. ECM01411 CAUTION: Do not place the outboard motor on its...
34. specified. If you are not familiar with ma- chine servicing, this work should be done NOTE: by your Yamaha dealer or other qualified For long-term storage, fogging the engine mechanic. with oil is recommended. Contact your...
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. Initial Every Item Actions...
Do not attempt to di- agnose any problems yourself. Instead, take NOTE: the outboard motor to a Yamaha dealer. You If a torque-wrench is not available when you should periodically remove and inspect the are fitting a spark plug, a good estimate of the...
Improper assembly or Check the fuel lines for leaks, crack, or mal- replacement could result in a fuel leak, function. If a problem is found, your Yamaha which could result in a fire or explosion dealer or other qualified mechanic should re- hazard.
If you have difficulty veri- 3. O-ring fying the idle speed, or the idle speed requires 4. Filter housing adjustment, consult a Yamaha dealer or other Reinstall the filter element in the cup. qualified mechanic. Make sure the O-ring is in position in the cup.
Maintenance EMU29130 Water leakage Start the engine and check that no water leaks from the joints between the exhaust cover, cylinder head, and body cylinder. EMU32110 Checking propeller EWM01610 WARNING You could be seriously injured if the en- gine accidentally starts when you are near ZMU01897 the propeller.
Tilt the outboard motor so that the gear oil Apply Yamaha marine grease or a corro- drain screw is at the lowest point possi- sion resistant grease to the propeller ble.
NOTE: Remove the fuel tank from the boat be- For disposal of used oil, consult your Yamaha fore cleaning it. Work only outdoors in dealer. an area with good ventilation.
Do not paint anodes, as this would render them ineffective. NOTE: Inspect ground leads attached to external an- odes on equipped models. Consult a Yamaha dealer for inspection and replacement of inter- nal anodes attached to the power unit. ZMU03231 Remove the screws holding the fuel joint assembly.
Maintenance Check the fitting of the top cowling by pushing it with both hands. If it is loose have it repaired by your Yamaha dealer. EMU29400 Coating the boat bottom A clean hull improves boat performance. The boat bottom should be kept as clean of marine growth as possible.
Yamaha outboard motors. Therefore Q. Has fuel pump malfunctioned? some items may not apply to your model. A. Have serviced by a Yamaha dealer. If your outboard motor requires repair, bring it to your Yamaha dealer. Q. Are spark plug(s) fouled or of incorrect...
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A. Return to normal operating position. A. Fill tank with clean, fresh fuel. Q. Is carburetor clogged? Q. Is fuel filter clogged? A. Have serviced by a Yamaha dealer. A. Clean or replace filter. Q. Is fuel joint connection incorrect? Q. Have ignition parts failed? A.
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Q. Is fuel system obstructed? Q. Is water pump or thermostat faulty? A. Check for pinched or kinked fuel line or oth- A. Have serviced by a Yamaha dealer. er obstructions in fuel system. Q. Is there excess water in fuel filter cup? Q.
A. Tighten bolt. EWM01022 WARNING Q. Is steering pivot loose or damaged? Use this procedure only in an emergen- A. Tighten or have serviced by a Yamaha cy to return to the nearest port for re- dealer. pairs. EMU29433 Temporary action in emergency...
Trouble Recovery Do not attach the cord to clothing 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.
If the outboard motor is submerged, immedi- cranking with the manual starter or emer- ately take it to a Yamaha dealer. Otherwise gency starter rope. some corrosion may begin almost immediate- If you cannot immediately take the outboard...
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YAMAHA MOTOR CO., LTD. Printed in Japan March 2007–0.9 × 1 CR Printed on recycled paper...