Summary of F4
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F4 f6 owner’s manual lit-18626-08-90 6bv-f8199-11 u.S.A.Edition read this manual carefully before operating this outboard motor. Dic183.
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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. U6bv10e0.Book page 1 friday, july 17, 2009 2:29 pm.
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Important manual information emu31284 to the owner thank you for selecting 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 obtain maximum enjoyment from your n...
Page 4: Table Of Contents
Table of contents safety information............................. 1 outboard motor safety .................... 1 propeller ............................................. 1 rotating parts ..................................... 1 hot parts............................................. 1 electric shock .....
Page 5: Table Of Contents
Table of contents checks before starting engine ...... 29 fuel level .......................................... 29 removing top cowling ...................... 30 fuel system ...................................... 30 controls ............................................ 30 engine shut-off cord (lanya...
Page 6: Safety Information
1 safety information emu33622 outboard motor safety observe these precautions at all times. Emu36501 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 neu- tral, and sharp edges of the propeller can cut even ...
Page 7: Safety Information
Safety information 2 emu33780 modifications do not attempt to modify this outboard motor. Modifications to your outboard motor may re- duce safety and reliability, and render the out- board unsafe or illegal to use. Emu33740 boating safety this section includes a few of the many im- portant safety p...
Page 8: Safety Information
Safety information 3 ● avoid sharp turns or other maneuvers that make it hard for others to avoid you or un- derstand where you are going. ● avoid areas with submerged objects or shallow water. ● ride within your limits and avoid aggressive maneuvers to reduce the risk of loss of con- trol, ejection...
Page 9: Safety Information
Safety information 4 contact the u.S. Coast guard, the national association of state boating law administra- tors, or your local power squadron for a com- plete set of rules governing the waters in which you will be using your boat. Emu33682 boating organizations the following organizations provide ...
Page 10: Safety Information
Safety information 5 slow down or change directions briefly and pass behind the other vessel. You should al- ways move in such a way that the 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 ...
Page 11: Safety Information
Safety 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 another vessel is passing you, you should maintain you...
Page 12: Safety Information
Safety information 7 many bodies of water used by boaters are en- tirely within the boundaries of a particular state. The uniform state waterway marking system has been devised for these waters. This system uses buoys and signs with dis- tinctive shapes and colors to show regulatory or advisory info...
Page 13: General Information
General information 8 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. Record your outboard motor serial number in the spaces provided to assist you in ordering spare ...
Page 14: General Information
General information 9 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. Emu33831 warning ...
Page 15: General Information
General information 10 zmu06860 1 2 3 4 u6bv10e0.Book page 10 friday, july 17, 2009 2:29 pm.
Page 16: General Information
General information 11 emu35132 symbols the following symbols mean as follows. Notice/warning read owner’s manual hazard caused by continuous rotation electrical hazard zmu05696 zmu05664 zmu05665 zmu05666 u6bv10e0.Book page 11 friday, july 17, 2009 2:29 pm.
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Specifications and requirements 12 emu38090 specifications tip: “(al)” stated in the specification data below represents the numerical value for the alumi- num propeller installed. Tip: “*” means, select the engine oil referring to the chart of engine oil paragraph. For further infor- mation, see pa...
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Specifications and requirements 13 recommended engine oil group 1*: sae 10w-30/10w-40/5w-30 api se/sf/sg/sh/sj/sl recommended engine oil group 2*: sae 15w-40/20w-40/20w-50 api sh/sj/sl engine oil quantity: 0.6 l (0.63 us qt, 0.53 imp.Qt) lubrication: wet sump recommended gear oil: hypoid gear oil sa...
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Specifications and requirements 14 emu39190 start-in-gear protection yamaha outboard motors are equipped with start-in-gear protection device. This feature permits the engine to be started only when it is in neutral. Always select neutral before starting the engine. Emu39691 engine oil requirements ...
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Specifications and requirements 15 ● avoid getting water and contaminants in the fuel tank. Contaminated fuel can cause poor performance or engine dam- age. Use only fresh gasoline that has been stored in clean containers. Gasohol there are two types of gasohol: gasohol con- taining ethanol (e10) an...
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Specifications and requirements 16 ● waterproof flashlight with extra batteries. ● an extra engine shut-off cord (lanyard) with clip. ● spare parts, such as an extra set of spark plugs. Consult your yamaha dealer for details. Emu25221 emission control information emu25230 north american models this ...
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Specifications and requirements 17 emu25280 one star—low emission the one-star label identifies engines that meet the air resources 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...
Page 23: Components
Components 18 emu2579r components diagram tip: * may not be exactly as shown; also may not be included as standard equipment on all models. F4, f6 emu39542 fuel tank (built-in fuel tank) this outboard motor is equipped with a built- in fuel tank and its parts are as follows. Zmu06715 1 2 3 11 12 13 ...
Page 24: Components
Components 19 fuel tank cap this cap seals the fuel tank. When removed, the tank can be filled with fuel. To remove the cap, turn it counterclockwise. Air vent screw this screw is on the fuel tank cap. To loosen the screw, turn it counterclockwise. Emu39353 fuel tank (portable fuel tank) this model ...
Page 25: Components
Components 20 emu39210 close to stop the fuel flow from the fuel tank to the carburetor, align the fuel cock with the closed position. When the engine is not running, always align the fuel cock with the closed position. Emu39222 open to send fuel from the fuel tank to the carbure- tor, align the fue...
Page 26: Components
Components 21 emu39711 throttle indicator the throttle indicator shows the throttle posi- tion. When the 100% position of the throttle in- dicator is aligned with the notch in the tiller handle, the throttle is fully open. When the 0% position of the throttle indicator is aligned with the notch in t...
Page 27: Components
Components 22 emu25994 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. Should the operator fall overboard or leave the helm, the cord will ...
Page 28: Components
Components 23 emu26073 manual starter handle the manual starter handle is used to crank and start the engine. Emu39252 steering friction adjuster warning ewm02270 do not overtighten the steering friction ad- juster. If there is too much resistance, it could be difficult to steer, which could re- sul...
Page 29: Components
Components 24 when the gear shift lever is moved to the neu- tral position or forward position, the outboard motor can be tilted up. Emu39831 tilt support bar use the tilt support bar to keep the outboard motor in the tilted up position or a shallow wa- ter cruising position. Emu39261 cowling lock l...
Page 30: Components
Components 25 1. Carrying handle zmu06787 1 u6bv10e0.Book page 25 friday, july 17, 2009 2:29 pm.
Page 31: Installation
Installation 26 emu39731 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 combinat...
Page 32: Installation
Installation 27 5. Mount the outboard motor on the center line (keel line) of the boat, and ensure that the boat itself is well balanced. Oth- erwise the boat will be hard to steer. For boats without a keel or which are asym- metrical, consult your dealer. 6. Turn the steering friction adjuster coun...
Page 33: Installation
Installation 28 notice ecm02170 ● check that the idle hole stays high enough to keep out water getting inside engine even if the boat is in stationary with maximum load. ● incorrect engine height or obstructions to the smooth flow of water (such as the design or condition of the boat) can cre- ate a...
Page 34: Operation
Operation 29 emu36381 first-time operation emu36391 fill engine oil the engine is shipped from the factory without engine oil. If your dealer did not fill the oil, you must fill it before starting the engine. Notice: check that the engine is filled with oil be- fore first-time operation to avoid sev...
Page 35: Operation
Operation 30 emu39840 removing top cowling for the following checks, remove the top cowling from the bottom cowling. To remove the top cowling, pull the cowling lock lever up and lift up the top cowling. Emu36442 fuel system warning ewm00060 gasoline and its vapors are highly flam- mable and explosi...
Page 36: Operation
Operation 31 emu36483 engine shut-off cord (lanyard) inspect the engine shut-off cord and clip for damage, such as cuts, breaks, and wear. Emu39383 engine oil 1. Place the outboard motor in an upright position (not tilted). Notice: if the mo- tor is not level, the oil level indicated on the dipstick...
Page 37: Operation
Operation 32 emu27153 engine ● check the engine and engine mounting. ● look for loose or damaged fasteners. ● check the propeller for damage. ● check for engine oil leaks. Emu39861 installing top cowling 1. Check the rubber seal for damage. If the rubber seal is damaged, have it replaced by a yamaha...
Page 38: Operation
Operation 33 warning ewm01830 ● gasoline and its vapors are highly flam- mable and explosive. Always refuel ac- cording to this procedure to reduce the risk of fire and explosion. ● gasoline is poisonous and can cause in- jury or death. Handle gasoline with care. Never siphon gasoline by mouth. If y...
Page 39: Operation
Operation 34 2. Remove the portable fuel tank from the boat. 3. Remove the fuel tank cap. 4. Fill the fuel tank, but do not overfill it. Fuel can expand and overflow if the tempera- ture increases. 5. Tighten the fuel tank cap securely. 6. Wipe up any spilled gasoline immediately with dry rags. Disp...
Page 40: Operation
Operation 35 2. Align the fuel cock with the built-in fuel tank position. 3. Remove the top cowling, and then squeeze the primer pump in the bottom cowling repeatedly until you feel it be- come slightly firm. 4. Install the top cowling. Sending fuel for portable fuel tank (optional) 1. Loosen the ai...
Page 41: Operation
Operation 36 4. Align the fuel cock with the portable fuel tank position. 5. Send fuel to the carburetor by squeezing the primer pump repeatedly, with the ar- row pointing up, until you feel it become firm. While the engine is running, make sure to keep the portable fuel tank hori- zontal. Otherwise...
Page 42: Operation
Operation 37 boat could slow rapidly. This could cause people and objects in the boat to be thrown forward. 1. Move the gear shift lever to the neutral position. 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 th...
Page 43: Operation
Operation 38 tip: it is not necessary to use the choke when starting a warm engine, such as immediately after the outboard motor has been operated under a load. 5. Pull the manual starter handle slowly until you feel resistance. Then give a strong pull straight out to crank and start the en- gine. I...
Page 44: Operation
Operation 39 or less. After the engine has warmed up, push the choke knob in fully. Failure to do so will shorten engine life. Tip: ● if the choke knob is left pulled out after the engine starts, the engine will stall. ● in temperatures of -5°c or less, leave the choke knob pulled out fully for appr...
Page 45: Operation
Operation 40 emu39881 stopping boat warning ewm02321 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 load or other parts of the boat. This could increase the risk of serious injury. It could also damage the shift mechanis...
Page 46: Operation
Operation 41 4. When using a portable fuel tank, discon- nect the fuel hose, and then install the fuel joint cap. Warning! When not us- ing a portable fuel tank, make sure to install the fuel joint cap. Otherwise, in- jury could result from striking the fuel joint accidentally. [ewm02411] emu40110 t...
Page 47: Operation
Operation 42 there are 5 holes provided in the clamp bracket to adjust the outboard motor trim an- gle. 1. Stop the engine. 2. Tilt the outboard motor up, and then re- move the trim rod from the clamp bracket. 3. Change the position of the trim rod in di- rection “a” to raise the bow (“trim-out”). C...
Page 48: Operation
Operation 43 emu39592 tilting up and down if the engine will be stopped for some time or if the boat is moored in shallows, the outboard motor should be tilted up to protect the propel- ler and lower case from damage due to colli- sions with obstructions, and also to reduce salt corrosion. Warning e...
Page 49: Operation
Operation 44 3. To prevent steering movement, turn the steering friction adjuster clockwise. 4. Tighten the air vent screw. 5. When using a portable fuel tank, discon- nect the fuel hose, and then install the fuel joint cap. Warning! When not us- ing a portable fuel tank, make sure to install the fu...
Page 50: Operation
Operation 45 3. Turn the steering friction adjuster coun- terclockwise to set the steering friction according to operator preference. Warning! If there is too much resis- tance it could be difficult to steer, which could result in an accident. [ewm00721] emu28061 shallow water emu39891 cruising in s...
Page 51: Operation
Operation 46 2. Hold the rear of the top cowling and slightly tilt the outboard motor up until the tilt support bar automatically locks. The outboard motor can be operated in this position for shallow water cruising. The outboard motor is equipped with 3 shal- low water cruising positions. Emu40041 ...
Page 52: Maintenance
Maintenance 47 emu39901 transporting and storing out- board motor warning ewm00695 ● use care when transporting a fuel container, whether in a boat or car. ● do not exceed the specified capacity of a fuel container. Gasoline will expand considerably as it warms up and can build up pressure in the fu...
Page 53: Maintenance
Maintenance 48 5. To prevent steering movement, turn the steering friction adjuster clockwise. 6. Turn the tiller handle 180° so that it is pointing rearward. 7. Loosen the clamp screws. 8. Hold the carrying handle and the hand- grip on the front side of the bottom cowl- ing and lift up the outboard...
Page 54: Maintenance
Maintenance 49 10. If transporting or storing the outboard mo- tor horizontally cannot be avoided, tight- en the clamp screws completely, place a towel or something similar under the out- board motor to protect it from damage, and then place the outboard motor in the attitude shown. If the front sid...
Page 55: Maintenance
Maintenance 50 ● store the outboard motor in a dry, well- ventilated place, not in direct sunlight. Emu28305 procedure emu39602 flushing in a test tank notice ecm00301 before starting the engine, make sure to supply water to the cooling water passag- es. Otherwise, the engine could overheat and be d...
Page 56: Maintenance
Maintenance 51 7. Fill the test tank with fresh water to above the level of the anti-cavitation plate. Notice: if the fresh water level is be- low the level of the anti-cavitation plate, or if the water supply is insuffi- cient, engine seizure may occur. [ecm00291] 8. Start the engine, operate it fo...
Page 57: Maintenance
Maintenance 52 6. Turn on the water supply to the outboard motor. 7. Start the engine, operate it for 10–15 min- utes at engine idle speed, and then spray “yamaha stor-rite engine fogging oil” into the fogging hole of the silencer. For further information, see steps 8-9 in “flushing in a test tank”....
Page 58: Maintenance
Maintenance 53 emu37081 periodic maintenance warning ewm01981 these procedures require mechanical skills, tools, and supplies. If you do not have the proper skills, tools, or supplies to perform a maintenance procedure, have a yamaha dealer or other qualified mechan- ic do the work. The procedures i...
Page 59: Maintenance
Maintenance 54 emu34446 maintenance chart 1 tip: ● 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 frequency should be adju...
Page 60: Maintenance
Maintenance 55 fuel/engine oil leakage inspection gear oil replacement greasing points greasing impeller/water pump housing inspection or replace- ment as necessary impeller/water pump housing replacement propeller/propeller nut/cotter pin inspection or replace- ment as necessary shift link inspecti...
Page 61: Maintenance
Maintenance 56 emu34451 maintenance chart 2 item actions every 1000 hours exhaust guide/exhaust manifold inspection or replace- ment as necessary u6bv10e0.Book page 56 friday, july 17, 2009 2:29 pm.
Page 62: Maintenance
Maintenance 57 emu28941 greasing yamaha grease a (water resistant grease) yamaha grease d (corrosion resistant grease; for propeller shaft) f4, f6 zmu06764 u6bv10e0.Book page 57 friday, july 17, 2009 2:29 pm.
Page 63: Maintenance
Maintenance 58 emu39291 cleaning and adjusting spark plug the spark plug is an important engine compo- nent. The condition of the spark plug can indi- cate something about the condition of the engine. For example, if the center electrode porcelain is very white, this could indicate an intake air lea...
Page 64: Maintenance
Maintenance 59 material is found in the filters, clean or replace them. For cleaning or replacement of the fuel filters, consult a yamaha dealer. Emu40140 inspecting idle speed notice ecm02230 when checking the engine idle speed, make sure to supply water to the cooling water passages by placing the...
Page 65: Maintenance
Maintenance 60 7. If the oil changer is not available, remove the drain screw while holding a container under the drain hole. Let the oil drain completely. Wipe up any spilled oil imme- diately. 8. If the drain screw was removed, install a new washer and drain screw, and then tighten the drain screw...
Page 66: Maintenance
Maintenance 61 16. Dispose of used oil according to local regulations. Tip: ● for more information on the disposal of used oil, consult your yamaha dealer. ● change the oil more often when operating the engine under adverse conditions such as extended trolling. 17. Install the top cowling. Emu39771 ...
Page 67: Maintenance
Maintenance 62 3. Remove the propeller and thrust washer. Emu30672 installing propeller emu39322 spline models notice ecm00500 be sure to use a new cotter pin and bend the ends over securely. Otherwise the pro- peller could come off during operation and be lost. 1. Apply yamaha grease d (corrosion r...
Page 68: Maintenance
Maintenance 63 4. Remove the oil level plug and gasket to allow the oil to drain completely. Notice: check the used oil after it has been drained. If the oil is milky or contains a large amount of metal par- ticles, the gear case may be damaged. Have a yamaha dealer check and re- pair the outboard m...
Page 69: Trouble Recovery
Trouble recovery 64 emu39523 troubleshooting this section describes the likely causes and remedies for problems, such as those in the fuel, compression, and ignition systems, poor starting, and loss of power. Please note that all of the items in this section may not apply to your model. If your outb...
Page 70: Trouble Recovery
Trouble recovery 65 a. Loosen air vent screw. Q. Is choke knob pulled out? A. Return to home position. Q. Is carburetor clogged? A. Have serviced by a yamaha dealer. Q. Is fuel joint connection incorrect? A. Connect correctly. Q. Is throttle cable adjustment incorrect? A. Have serviced by a yamaha d...
Page 71: Trouble Recovery
Trouble recovery 66 a. Connect correctly. Engine vibrates excessively. Q. Is propeller damaged? A. Have propeller repaired or replaced. Q. Is propeller shaft damaged? A. Have serviced by a yamaha dealer. Q. Are weeds or other foreign material tan- gled on propeller? A. Remove and clean propeller. Q....
Page 72: Trouble Recovery
Trouble recovery 67 ● an unguarded, rotating flywheel is very dangerous. Keep loose clothing and other objects away when starting the en- gine. 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 ...
Page 73: Trouble Recovery
Trouble recovery 68 6. Insert the knotted end of the emergency starter rope into the notch in the flywheel magnet and wind the rope several turns around the flywheel magnet clockwise. 7. Attach the engine shut-off cord to a se- cure place on your clothing, or your arm or leg. Then, install the clip ...
Page 74: Trouble Recovery
Trouble recovery 69 emu33501 treatment of submerged motor if the outboard motor is submerged, immedi- ately take it to a yamaha dealer. Otherwise some corrosion may begin almost immediate- ly. Notice: do not attempt to run the out- board motor until it has been completely inspected. [ecm00401] u6bv1...
Page 75: Consumer Information
Consumer information 70 emu29830 yamaha motor corporation, u.S.A. Four-stroke outboard motor three-year limited warranty chapter9 page 70 wednesday, december 9, 2009 11:40 am.
Page 76: Consumer Information
Consumer information 71 chapter9 page 71 wednesday, december 9, 2009 11:40 am.
Page 77: Consumer Information
Consumer information 72 emu29841 important warranty information if you use your yamaha outside the usa or canada u6bv10e0.Book page 72 friday, july 17, 2009 2:29 pm.
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A5-tate_blank.Fm page 1 friday, may 16, 2003 9:00 am.
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A5-tate_blank.Fm page 1 friday, may 16, 2003 9:00 am.
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December 2009–0.3 × 1 cr printed in france yamaha motor corporation, usa dic183.