Yamaha F4B Owner's Manual
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Yamaha F4B Owner's Manual

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F4B
F5A
F6C
OWNER'S MANUAL
Read this manual carefully before operating this
outboard motor.
6BV-F8199-22-E0

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Summary of Contents for Yamaha F4B

  • Page 1 OWNER’S MANUAL Read this manual carefully before operating this outboard motor. 6BV-F8199-22-E0...
  • 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.

  • Page 3: Important Manual Information

    If there is any To the owner question concerning this manual, please con- Thank you for selecting a Yamaha outboard sult your Yamaha dealer. motor. This Owner’s Manual contains infor- To ensure long product life, Yamaha recom-...

  • Page 4: Table Of Contents

    Table of contents Safety information......1 Anti-fouling paint ......12 Outboard motor safety ....1 Motor disposal requirements..12 Emergency equipment ....12 Propeller ..........1 Rotating parts ........1 Emission control information..12 Hot parts..........1 U.S. insular areas......12 Electric shock ........
  • Page 5 Table of contents Installing top cowling ......27 Checking fuel filter ......54 Filling fuel ........27 Inspecting idle speed......55 Changing engine oil......55 Operating engine......29 Checking connector and lead ... 57 Sending fuel ........30 Checking propeller ......57 Starting engine .........

  • Page 6: Safety Information

    Safety information EMU33622 running away under power and leaving peo- Outboard motor safety ple stranded, or running over people or ob- Observe these precautions at all times. jects. EMU36501 Always attach the engine shut-off cord to a Propeller secure place on your clothing or your arm or People can be injured or killed if they come in leg while operating.

  • Page 7: Modifications

    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...

  • Page 8: Weather

    Safety information 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, and collision.

  • Page 9: General Information

    Outboard motors affixed with this “CE”mark- the spaces provided to assist you in ordering ing conform with the directives of; 98/37/EC, spare parts from your Yamaha dealer or for 94/25/EC - 2003/44/EC and 2004/108/EC. reference in case your outboard motor is sto- len.
  • Page 10 General information ZMU06712 1. C-Tick label location ZMU01697...

  • Page 11: Read Manuals And Labels

    Read all labels on the outboard motor and the boat. If you need any additional information, contact your Yamaha dealer. EMU33832 Warning labels If these labels are damaged or missing, contact your Yamaha dealer for replacements. F4B, F5A, F6C ZMU06795...
  • Page 12 General information ZMU05920 EMU35281 Contents of labels EWM01671 The above warning labels mean as follows. WARNING Read Owner’s Manuals and labels. EWM01691 Wear an approved personal flotation de- WARNING vice (PFD). Emergency starting does not have start- Attach engine shut-off cord (lanyard) to in-gear protection.
  • Page 13 General information Hazard caused by continuous rotation EWM01701 WARNING 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. ZMU05665 Notice/Warning Electrical hazard...

  • Page 14: Specifications And Requirements

    Specifications and requirements EMU38090 Idle speed (in neutral): Specifications 1500 ±50 r/min TIP: Engine: “(AL)” stated in the specification data below Type: represents the numerical value for the alumi- 4-stroke S num propeller installed. Displacement: 139.0 cm³ TIP: Bore × stroke: “*”...

  • Page 15: Installation Requirements

    F4BMH 5.5 m/s² (*EC1) where a different propeller would be more ap- F5AMH 5.5 m/s² (*EC1) propriate. F6CMH 5.5 m/s² (*EC1) Your Yamaha dealer can help you select the EMU33554 Installation requirements right propeller for your boating needs. Select EMU33564...

  • Page 16: Start-In-Gear Protection

    1. Propeller diameter in inches 2. Propeller pitch in inches 3. Type of propeller (propeller mark) EMU39190 Start-in-gear protection Yamaha outboard motors are equipped with start-in-gear protection device. This feature ZMU06855 permits the engine to be started only when it EMU36360 is in neutral.

  • Page 17: Anti-Fouling Paint

    Spare parts, such as an extra set of spark age. Use only fresh gasoline that has plugs. been stored in clean containers. Consult your Yamaha dealer for details. EMU25221 Emission control information Gasohol There are two types of gasohol: gasohol con- EMU25310 U.S.

  • Page 18: Components

    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 21 19 ZMU06715 1. Top cowling 16.Fuel joint 2. Cowling lock lever 17.Fuel joint cap...

  • Page 19: Fuel Tank (Portable Fuel Tank)

    Components 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. ZMU01992 1.

  • Page 20: Tiller Handle

    Components 3. Built-in fuel tank position 2. Built-in fuel tank position 4. Portable fuel tank position 3. Portable fuel tank position EMU39210 EMU25912 Close Tiller handle To stop the fuel flow from the fuel tank to the To change direction, move the tiller handle to carburetor, align the fuel cock with the closed the left or right as necessary.

  • Page 21: Throttle Indicator

    Components ZMU06808 ZMU06723 1. Throttle grip 1. Start mark “ ” 2. Notch EMU39711 Throttle indicator EMU39242 Throttle friction adjuster The throttle indicator shows the throttle posi- The throttle friction adjuster provides adjust- tion. When the 100% position of the throttle in- able resistance when the throttle grip is dicator is aligned with the notch in the tiller turned, and can be set according to operator...

  • Page 22: Engine Shut-Off Cord (Lanyard) And Clip

    Components 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 pull out the clip, stopping ignition to the engine.

  • Page 23: Manual Starter Handle

    Components ZMU06868 ZMU06729 1. Steering friction adjuster 1. Fuel joint cap To increase resistance, turn the steering fric- EMU26073 Manual starter handle tion adjuster clockwise. The manual starter handle is used to crank To decrease resistance, turn the steering fric- and start the engine.

  • Page 24: Tilt Support Bar

    Components ZMU06838 ZMU06731 1. Gear shift lever 1. Tilt support bar 2. Reverse position 2. Tilted up position 3. Shallow water cruising position EMU39261 Cowling lock lever The cowling lock lever is used to secure the top cowling. ZMU06839 1. Tilt lock When the gear shift lever is moved to the neu- tral position or forward position, the outboard motor can be tilted up.
  • Page 25 Components ZMU06787 1. Carrying handle...

  • Page 26: Installation

    If you are not able to mount the outboard motor properly, consult a Yamaha dealer. ZMU06836 EMU39562 Hold the carrying handle and the hand-...
  • Page 27 Installation ZMU06834 1. Steering friction adjuster EMU39740 Mounting height To run your boat at optimum efficiency, the ZMU06835 water resistance (drag) of the boat and out- board motor must be made as little as possi- Mount the outboard motor on the center ble.

  • Page 28: Clamping The Outboard Motor

    Test runs at different heights can help determine the optimum mounting height. Consult your Yamaha dealer or boat manufacturer for further information on determining the prop- er mounting height. For instructions on setting the trim angle of the outboard motor, see page 36.

  • Page 29: Operation

    Operation EMU36381 For the first hour of operation: First-time operation Run the engine at varying speeds up to EMU36391 2000 r/min or approximately half throttle. Fill engine oil For the second hour of operation: The engine is shipped from the factory without Run the engine at 3000 r/min or at ap- engine oil.

  • Page 30: Removing Top Cowling

    Operation EMU39840 EMU39851 Removing top cowling Controls For the following checks, remove the top Move the tiller handle fully to the left and cowling from the bottom cowling. right to check that operation is smooth. To remove the top cowling, pull the cowling Turn the throttle grip from the fully closed lock lever up and lift up the top cowling.

  • Page 31: Engine Shut-Off Cord (Lanyard)

    Operation ZMU06874 ZMU06769 1. Oil filler cap EMU36483 Engine shut-off cord (lanyard) 2. Oil lubrication check window Inspect the engine shut-off cord and clip for TIP: damage, such as cuts, breaks, and wear. The oil lubrication check window does not in- dicate the engine oil level.

  • Page 32: Engine

    EMU39861 Installing top cowling Check the rubber seal for damage. If the rubber seal is damaged, have it replaced by a Yamaha dealer. Align the fuel tank cap and manual starter handle with their respective holes in the top cowling.
  • Page 33 Operation EWM01830 WARNING 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.

  • Page 34: Operating Engine

    Operation to install the fuel joint cap. Otherwise, injury could result from striking the fuel joint accidentally. [EWM02411] ZMU06832 Tighten the fuel tank cap securely. Wipe up any spilled gasoline immediately ZMU06753 with dry rags. Dispose of rags properly 1. Fuel hose according to local laws or regulations.

  • Page 35: Sending Fuel

    Operation EMU39395 Sending fuel Sending fuel for built-in fuel tank Loosen the air vent screw by 1 or 2 turns. ZMU06826 1. Primer pump Install the top cowling. Sending fuel for portable fuel tank (optional) ZMU06740 Loosen the air vent screw on the portable 1.

  • Page 36: Starting Engine

    Operation 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.
  • Page 37 Operation EMU39403 Manual start EWM01840 WARNING 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 could ZMU06744 tear loose.

  • Page 38: Checks After Starting Engine

    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 the prob- lem cannot be located and corrected. ZMU06746 After the engine starts, slowly return the manual starter handle to its original posi- tion before releasing it.

  • Page 39: Warming Up Engine

    Operation Start the engine, and then check that the engine stops when the engine stop button is pushed. Restart the engine, and then check that the engine stops when the clip is pulled from the engine shut-off switch. Check that the engine cannot be started with the clip removed from the engine shut- off switch.

  • Page 40: Stopping Boat

    Operation To shift to neutral EMU39412 Procedure Close the throttle so that the engine Push and hold the engine stop button un- slows to idle speed. til the engine stops completely. The en- Move the gear shift lever to the neutral gine can also be stopped by pulling the position.

  • Page 41: Trimming Outboard Motor

    Operation install the fuel joint cap. Otherwise, in- jury could result from striking the fuel joint accidentally. [EWM02411] ZMU06751 1. Air vent screw ZMU06753 1. Fuel hose 2. Fuel joint cap EMU40110 Trimming outboard motor EWM00740 WARNING Excessive trim for the operating condi- tions (either trim up or trim down) can cause boat instability and can make steer- 1.

  • Page 42: Adjusting Trim Angle For Manual Tilt Models

    Operation ZMU06755 1. Trim rod Change the position of the trim rod in di- rection “A” to raise the bow (“trim-out”). Change the position of the trim rod in di- rection “B” to lower the bow (“trim-in”). TIP: The outboard motor trim angle changes ap- proximately 4 degrees when the trim rod posi- ZMU06754 tion is changed by 1 hole.

  • Page 43: Tilting Up And Down

    Operation Bow Up ler and lower case from damage due to colli- Too much trim-out puts the bow of the boat sions with obstructions, and also to reduce too high in the water. Excessive trim-out can salt corrosion. also cause the propeller to ventilate, which re- duces performance further, and the boat may “porpoise”...

  • Page 44: Procedure For Tilting Up

    Operation The outboard motor cannot be tilted when in reverse. EMU39552 Procedure for tilting up Align the fuel cock with the closed posi- tion. ZMU06827 1. Steering friction adjuster Tighten the air vent screw. ZMU06871 1. Closed position Move the gear shift lever to the neutral position.

  • Page 45: Procedure For Tilting Down

    Operation tance it could be difficult to steer, 2. Fuel joint cap which could result in an accident. Hold the rear of the top cowling and fully [EWM00721] 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.
  • Page 46 Operation ZMU06760 ZMU06819 1. Shallow water cruising position 1. Cooling water inlet 2. Tilt support bar EMU39583 Procedure for shallow water cruising EMU40041 Procedure for returning to normal cruising Move the gear shift lever to the neutral To tilt the outboard motor down to the position.

  • Page 47: Cruising In Other Conditions

    Operation 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.

  • Page 48: Maintenance

    Never get under the outboard motor a transom saver bar. Consult your Yamaha while it is tilted. Severe injury could oc- dealer for further details. cur if the outboard motor accidentally...
  • Page 49 Maintenance Align the fuel cock with the closed posi- tion. ZMU06827 1. Steering friction adjuster ZMU06871 Turn the tiller handle 180° so that it is 1. Closed position pointing rearward. When using a portable fuel tank, discon- nect the fuel hose from the fuel joint, and then install the fuel joint cap.

  • Page 50: Storing Outboard Motor

    90° so that it does not con- It is advisable to have your outboard motor tact the ground, and then turn the steer- serviced by an authorized Yamaha dealer pri- ing friction adjuster clockwise to secure or to storage. However, the following proce- the bracket.

  • Page 51: Procedure

    When using the built-in fuel tank, com- pletely drain the fuel from the tank, and then align the fuel cock with the closed position and tighten the air vent screw. For draining of the built-in fuel tank, con- sult a Yamaha dealer.
  • Page 52 Maintenance ZMU06862 ZMU06823 1. Water surface 11. If “Fogging Oil” is not available, run the 2. Lowest water level engine at engine idle speed until the fuel 3. Cooling water inlet system empties and the engine stops. Fill the test tank with fresh water to above Check that the engine has stopped, and the level of the anti-cavitation plate.

  • Page 53: Lubrication

    Seal mation, see page 57. replacement should be performed by an Remove the screw located beside the authorized Yamaha dealer prior to use. “ ” (wash) mark on the lower case. Grease all grease fittings. For further de- Install the water flush plug and connect it tails, see page 53.

  • Page 54: Checking Painted Surface Of Outboard Motor

    EMU28511 Replacement parts If replacement parts are necessary, use only genuine Yamaha parts or parts of equivalent design and quality. Any part of inferior quality may malfunction, and the resulting loss of control could endanger the operator and pas- sengers.

  • Page 55: Maintenance Chart 1

    When operating in salt water, muddy, other turbid (cloudy), acidic 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...
  • Page 56 Inspection or replace- Stop switch ment as necessary Connector connec- Inspection or replace- tions/lead connections ment as necessary Fuel tank (optional Inspection and clean- Yamaha portable fuel ing as necessary tank) Inspection and clean- Fuel tank (built-in tank) ing as necessary...

  • Page 57: Maintenance Chart 2

    Maintenance EMU34451 Maintenance chart 2 Every Item Actions 1000 hours Exhaust guide/exhaust Inspection or replace- manifold ment as necessary...

  • Page 58: Greasing

    Maintenance EMU28943 Greasing Yamaha grease A (water resistant grease) Yamaha grease D (corrosion resistant grease; for propeller shaft) F4B, F5A, F6C ZMU06764...

  • Page 59: Cleaning And Adjusting Spark Plug

    Do not attempt to diagnose any problems yourself. Instead, take the outboard motor to a Yamaha dealer. You should peri- odically remove and inspect the spark plug because heat and deposits will cause the spark plug to slowly break down and erode.

  • Page 60: Inspecting Idle Speed

    Maintenance material is found in the filters, clean or replace them. For cleaning or replacement of the fuel filters, consult a Yamaha dealer. ZMU06766 Start the engine. Warm it up and keep the idle speed for 5-10 minutes. ZMU06765 Stop the engine and leave it for 5-10 min- 1.
  • Page 61 NOTICE: If there are oil leaks, stop the engine and find the Add the correct amount of oil through the cause. Consult your Yamaha dealer if filler hole. NOTICE: Overfilling the oil the problem cannot be located and tank could cause leakage or damage.

  • Page 62: Checking Connector And Lead

    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.

  • Page 63: Installing Propeller

    You could be severely injured if the out- board motor falls on you. Apply Yamaha grease D (corrosion resis- tant grease) into the propeller shaft. Put the outboard motor in an upright po- Install the thrust washer and propeller sition (not tilted).

  • Page 64: Inspecting And Replacing Anode (External)

    [ECM00713] Tightening torque: TIP: 9.0 Nm (0.92 kgf-m, 6.6 ft-lb) For disposal of used oil, consult your Yamaha dealer. EMU39331 Inspecting and replacing anode (ex- Using a flexible or pressurized filling de- ternal) vice, inject the gear oil into the gear oil Yamaha outboard motors are protected from drain screw hole.
  • Page 65 Maintenance ZMU06781 1. Anode...

  • Page 66: Trouble Recovery

    This section describes the likely causes and Q. Are engine inner parts damaged? remedies for problems, such as those in the A. Have serviced by a Yamaha dealer. fuel, compression, and ignition systems, poor starting, and loss of power. Please note that Engine idles irregularly or stalls.
  • Page 67 A. Check for pinched or kinked fuel line or oth- Q. Is carburetor clogged? er obstructions in fuel system. A. Have serviced by a Yamaha dealer. Q. Is fuel filter clogged? Q. Is fuel joint connection incorrect? A. Clean or replace filter.

  • Page 68: Temporary Action In Emergency

    Whether damage is found or not, return to the nearest harbor slowly and careful- Engine vibrates excessively. Q. Is propeller damaged? Have a Yamaha dealer check the out- A. Have propeller repaired or replaced. board motor before operating it again. EMU39791 Starter will not operate Q.

  • Page 69: Emergency Engine Starting

    Trouble Recovery 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.
  • Page 70 Trouble Recovery Align the engine start mark “ ” on the throttle grip with the notch in the tiller han- dle. ZMU06783 Insert the knotted end of the emergency starter rope into the notch in the flywheel ZMU06808 magnet and wind the rope several turns 1.

  • Page 71: Treatment Of Submerged Motor

    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.
  • Page 72 YAMAHA MOTOR CO., LTD. Printed in France April 2010–0.3 × 1 CR...

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