- DL manuals
- Yamaha
- Outboard Motor
- F4B
- Owner's Manual
Yamaha F4B Owner's Manual
Summary of F4B
Page 1
Read this manual carefully before operating this outboard motor. Owner’s manual f4b f5a f6c 6bv-f8199-22-e0 u6bv22e0.Book page 1 tuesday, april 27, 2010 4:04 pm.
Page 2
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. U6bv22e0.Book page 1 tuesday, april 27, 2010 4:04 pm.
Page 3
Important manual information emu25107 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 installing top cowling ........................ 27 filling fuel ...................................... 27 operating engine........................... 29 sending fuel ..................................... 30 starting engine ................................. 31 checks after starting ...
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: General Information
General information 4 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 10: General Information
General information 5 1. C-tick label location zmu06712 1 zmu01697 u6bv22e0.Book page 5 tuesday, april 27, 2010 4:04 pm.
Page 11: General Information
General information 6 emu33522 read manuals and labels before operating or working on this outboard 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. Emu33832...
Page 12: General Information
General information 7 emu35281 contents of labels the above warning labels mean as follows. 1 warning ewm01691 emergency starting does not have start- in-gear protection. Ensure shift control is in neutral before starting engine. 2 warning ewm01681 ● keep hands, hair, and clothing away from rotating...
Page 13: General Information
General information 8 4 warning ewm01701 gasoline is highly flammable and explo- sive. Shut off engine before refueling. Tighten tank cap and air vent screw when not in use. Emu35132 symbols the following symbols mean as follows. Notice/warning read owner’s manual hazard caused by continuous rotatio...
Page 14
Specifications and requirements 9 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 pag...
Page 15
Specifications and requirements 10 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...
Page 16
Specifications and requirements 11 need to reduce your throttle setting to stay within the recommended engine speed range when carrying lighter loads. To check the propeller, see page 57. Emu39190 start-in-gear protection yamaha outboard motors are equipped with start-in-gear protection device. This...
Page 17
Specifications and requirements 12 ● 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...
Page 18: Components
Components 13 emu2579w components diagram tip: * may not be exactly as shown; also may not be included as standard equipment on all models (order from dealer). F4b, f5a, f6c emu39542 fuel tank (built-in fuel tank) this outboard motor is equipped with a built- in fuel tank and its parts are as follow...
Page 19: Components
Components 14 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 20: Components
Components 15 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 21: Components
Components 16 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 22: Components
Components 17 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 23: Components
Components 18 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 24: Components
Components 19 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 25: Components
Components 20 1. Carrying handle zmu06787 1 u6bv22e0.Book page 20 tuesday, april 27, 2010 4:04 pm.
Page 26: Installation
Installation 21 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 27: Installation
Installation 22 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 28: Installation
Installation 23 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 29: Operation
Operation 24 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 30: Operation
Operation 25 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 31: Operation
Operation 26 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 32: Operation
Operation 27 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 33: Operation
Operation 28 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 34: Operation
Operation 29 to install the fuel joint cap. Otherwise, injury could result from striking the fuel joint accidentally. [ewm02411] 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. Warning! Do not overfill. Otherwise fuel can ex...
Page 35: Operation
Operation 30 emu39395 sending fuel sending fuel for built-in fuel tank 1. Loosen the air vent screw by 1 or 2 turns. 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 sl...
Page 36: Operation
Operation 31 3. Remove the fuel joint cap. Align the fuel joint on the fuel line with the fuel joint on the motor and connect the fuel line se- curely between the tank and the outboard motor while pinching the joint so that the primer pump arrow is pointing toward the outboard motor. 4. Align the fu...
Page 37: Operation
Operation 32 emu39403 manual start warning ewm01840 ● failure to attached engine shut-off cord could result in a runaway boat if opera- tor is ejected. Attach the engine shut-off cord to a secure place on your clothing, or your arm or leg while operating. Do not attach the cord to clothing that coul...
Page 38: Operation
Operation 33 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 39: Operation
Operation 34 emu27670 warming up engine emu40070 warming up after starting the engine, return the choke knob to the halfway position. For approxi- mately the first 5 minutes after starting, warm up the engine by operating at one fifth throttle or less. After the engine has warmed up, push the choke ...
Page 40: Operation
Operation 35 to shift to neutral 1. Close the throttle so that the engine slows to idle speed. 2. Move the gear shift lever to the neutral position. 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...
Page 41: Operation
Operation 36 3. Align the fuel cock with the closed posi- tion. 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...
Page 42: Operation
Operation 37 emu39272 adjusting trim angle for manual tilt models warning ewm00400 ● stop the engine before adjusting the trim angle. ● use care to avoid being pinched when removing or installing the rod. ● use caution when trying a trim position for the first time. Increase speed gradu- ally and wa...
Page 43: Operation
Operation 38 bow up too much trim-out puts the bow of the boat too high in the water. Excessive trim-out can also cause the propeller to ventilate, which re- duces performance further, and the boat may “porpoise” (hop in the water), which could throw the operator and passengers over- board. Bow down...
Page 44: Operation
Operation 39 ● the outboard motor cannot be tilted when in reverse. Emu39552 procedure for tilting up 1. Align the fuel cock with the closed posi- tion. 2. Move the gear shift lever to the neutral position. 3. To prevent steering movement, turn the steering friction adjuster clockwise. 4. Tighten th...
Page 45: Operation
Operation 40 6. Hold the rear of the top cowling and fully tilt the outboard motor up. Slightly lower the outboard motor from the fully tilted up position and fit the tilt support bar secure- ly into the holder located on the clamp bracket. Emu39571 procedure for tilting down 1. Slightly tilt the ou...
Page 46: Operation
Operation 41 emu39583 procedure for shallow water cruising 1. Move the gear shift lever to the neutral position. 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...
Page 47: Operation
Operation 42 emu35391 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. Also rinse the outside of the outboard motor with fresh wa- ter. Cruising in muddy, turbid, or acidic wate...
Page 48: Maintenance
Maintenance 43 emu39904 transporting and storing out- board motor warning ewm02630 ● use care when transporting fuel tank, whether in a boat or car. ● do not fill fuel container to maximum capacity. Gasoline will expand consider- ably as it warms up and can build up pressure in the fuel container. T...
Page 49: Maintenance
Maintenance 44 3. Align the fuel cock with the closed posi- tion. 4. When using a portable fuel tank, discon- nect the fuel hose from the fuel joint, and then install the fuel joint cap. Warning! When not using a portable fuel tank, make sure to install the fuel joint cap. Otherwise, injury could re...
Page 50: Maintenance
Maintenance 45 9. When transporting or storing the out- board motor while removed from a boat, use an outboard motor stand. 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- boa...
Page 51: Maintenance
Maintenance 46 notice ecm02212 ● do not place the outboard motor on its side before the cooling water has drained from it completely. Otherwise, water may enter the cylinder through the exhaust valve and cause engine trouble. ● transport and store the outboard motor as specified in “dismounting the ...
Page 52: Maintenance
Maintenance 47 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. Move the gear shift lever to th...
Page 53: Maintenance
Maintenance 48 ing of the engine is mandatory to prevent ex- cessive engine damage due to rust. Perform the flushing and fogging at the same time. 1. Wash the outboard motor body using fresh water. Notice: do not spray wa- ter into the air intake. [ecm01840] for further information, see page 48. 2. ...
Page 54: Maintenance
Maintenance 49 emu28461 checking painted surface of outboard motor check the outboard motor for scratches, nicks, or flaking paint. Areas with damaged paint are more likely to corrode. If necessary, clean and paint the areas. A touch-up paint is available from your yamaha dealer. Emu37074 periodic m...
Page 55: Maintenance
Maintenance 50 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 56: Maintenance
Maintenance 51 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 57: Maintenance
Maintenance 52 emu34451 maintenance chart 2 item actions every 1000 hours exhaust guide/exhaust manifold inspection or replace- ment as necessary u6bv22e0.Book page 52 tuesday, april 27, 2010 4:04 pm.
Page 58: Maintenance
Maintenance 53 emu28943 greasing yamaha grease a (water resistant grease) yamaha grease d (corrosion resistant grease; for propeller shaft) f4b, f5a, f6c zmu06764 u6bv22e0.Book page 53 tuesday, april 27, 2010 4:04 pm.
Page 59: Maintenance
Maintenance 54 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 60: Maintenance
Maintenance 55 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 61: Maintenance
Maintenance 56 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 62: Maintenance
Maintenance 57 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 63: Maintenance
Maintenance 58 3. Remove the propeller and thrust washer. Emu30672 installing propeller emu39323 spline models notice ecm00501 make sure to use a new cotter pin and bend the ends over securely. Otherwise, the propeller could come off during opera- tion and be lost. 1. Apply yamaha grease d (corrosio...
Page 64: Maintenance
Maintenance 59 4. Remove the oil level plug and gasket to allow the oil to drain completely. Notice: check the used gear oil after it has been drained. If the gear oil is milky or contains water or a large amount of metal particles, the gear case may be damaged. Have a yamaha dealer check and repair...
Page 65: Maintenance
Maintenance 60 1. Anode zmu06781 1 u6bv22e0.Book page 60 tuesday, april 27, 2010 4:04 pm.
Page 66: Trouble Recovery
Trouble recovery 61 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 67: Trouble Recovery
Trouble recovery 62 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 68: Trouble Recovery
Trouble recovery 63 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 69: Trouble Recovery
Trouble recovery 64 ● 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 70: Trouble Recovery
Trouble recovery 65 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 71: Trouble Recovery
Trouble recovery 66 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] u6bv2...
Page 72
Yamaha motor co., ltd. Printed in france april 2010–0.3 × 1 cr u6bv22e0.Book page 1 tuesday, april 27, 2010 4:04 pm.