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Honda Outboard Motor BF20 Owner's Manual

Honda power equipment outboard motor owner's manual
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Summary of Contents for Honda Outboard Motor BF20

  • Page 3 Thank you for purchasing This manual covers operation Motor. All information formation available at the time of approval for printing. Honda Motor Co., Ltd. reserves the right to make changes at any time without notice and without No part of this publication This manual should be considered a permanent part of the Outboard Motor and should remain with the Outboard Motor when it is sold.

  • Page 5: Table Of Contents

    SAFETY INSTRUCTIONS ... WARNING LABELS ... COMPONENT IDENTIFICATION INSTALLATION ... PRE-OPERATION CHECK ... STARTING THE ENGINE ... OPERATION ... STOPPING THE ENGINE ... High altitude operation ... MAINTENANCE TRANSPORTING/STORAGE.. TROUBLESHOOTING SPECIFICATIONS.. OPTIONAL PARTS ... WARRANTY SERVICE ... CONTENTS...

  • Page 6: Safety Instructions

    THIS OWNER’S MANUAL power is properly mounted. to operate the outboard if any passenger while the boat is near any person poisonous carbon monoxide. garage or confined flammable and is explosive area with the engine flames or sparks where refueling.

  • Page 7: Warning Labels

    2. WARNING LABELS WARNING LABEL LOCATIONS WARNING WHEN CARRYING, SHUT BREATHER VALVE. HONDA MOTOR CO.,LTO. MADE IN JAPAN...

  • Page 8: Component Identification

    3. COMPONENT STERN BRACKET ADJUSTING ANTI-CAVITATION PLATE WATER INTAKE GEAR OIL LEVEL BOLT GEAR OIL DRAIN BOLT- PROPELLER IDENTIFICATION (BFZOS)
  • Page 9 FUEL FILLER CAP FUEL VALVE LEVER THROTTLE LEVER CHOKE KNOB WINDOW WATER CHECK HOLE (BF20S)

  • Page 10: Installation

    Incorrect installation height will reduce per- formance. The motor should be installed that the anti-cavitation cm (0.8-2.0 bottom of the boat. CAUTION: water be at least 4 inches cavitation plate, water pump may not receive...
  • Page 11 4. Motor Angle Adjust the motor so the axis of the propeller is parallel with the water surface. CAUSES BOAT TO “SQUAT” INCORRECT CAUSES BOAT TO “PLOW” 5. Motor Angle Adjustment If the propeller axis is not parallel with the water, adjust the angle of...

  • Page 12: Pre-Operation Check

    1. Check the engine oil level. CAUTION: 0 Engine oil is a major factor life. Non-detergent 0 Running the engine damage. Use Honda 4-stroke oil, or an equi- valent high detergent, quality motor oil certified to meet exceed U.S. manufacturer’s requirements Service Classification...
  • Page 13 2. Check the fuel level Use any regular grade automotive red) with a pump octane rating of 86 or higher. Never use an oil/gasoline mixture or dirty gasoline. Avoid getting dirt, dust or water in the fuel tank. CAUTION: Gasoline harmful to the fuel system Fuel tank capacity:...
  • Page 14 3. Check the following items. 0 Check the propeller, the shear pin, and the cotter pin to be sure they are secure and undamaged. 0 Check the stern bracket to be sure the motor is securely installed. 0 Check steering handle operation. 0 Make sure you have the tool kit and spare parts with you (p.

  • Page 15: Starting The Engine

    6. STARTING THE ENGJNE 1. Open the fuel cap vent knob 2 to 3 turns. FUEL CAP VENT KNOB 2. Turn the fuel valve lever ON. FUEL VALVE LEVER...
  • Page 16 START position. THROTTLE LEVER CAUTION: Do not start the engine with the throttle lever in the FAST position, or the boat may move suddenly when the engine starts. 4. In temperatures below 20,OC (68O F) use the choke knob. CHOKE KNOB...
  • Page 17 5. Pull the starter rope slowly until resistance is felt, then pull briskly. NOTE: Do not allow the starter grip to snap back. Return it slowly by hand. STARTER GRIP 6. After starting, be sure water is flowing out of the water check hole. CAUTION: If water does not flow...
  • Page 18 7. If the choke was used, push it in gradually as the engine warms up. CHOKE KNOB...
  • Page 19 Emergency Starting If the recoil starter is not working properly, the engine can be started with the spare starter rope in the tool kit. 1. Remove the engine cover. 2. Remove the recoil starter by removing the three 6 mm nuts. 3.

  • Page 20: Operation

    Turn the throttle lever toward FAST to increase speed. For normal cruis-, ing, open the throttle NOTE: For best performance, distributed to balance the boat evenly frorr) side to side and parallel to the water from front to back. about 3/4. passengers...
  • Page 21 2. Steering To turn to the right, swing the steering handle to the left. To turn to the left, swing the handle to the right. For smooth steering, adjust the steering friction bolt so that a slight drag is felt when turning. STEERING FRICTION BOLT...
  • Page 22 SLOW position. THROTTI LEVER 2. Turn the steering handle 1 80° to reverse the direction of the motor. CAUTION: Do not reverse the motor while the throttle lever is beyond the SLOW position, or the boat could overturn.
  • Page 23 Motor Tilt the motor to prevent the propeller and gear case from hitting bottom when the boat is beached or stopped in shallow water. 1. Stop the engine and turn the fuel valve lever off. 2. Close the fuel cap vent knob.
  • Page 24 Don’t allow the motor to strike against the pier or other boats. CAUTION: To avoid damaging the motor, never use it as a handle for lif- ting or moving the boat.

  • Page 25: Stopping The Engine

    8. STOPPING THE ENGINE 1. Move the throttle lever all the way to the left. THRbTTLE LEVER 2. Push the stop button until the engine stops running. ENGINE STOP BUTTON 3. Turn the fuel valve lever OFF. FUEL VALVE LEVER...

  • Page 26: High Altitude Operation

    4. Close the fuel cap vent knob. High altitude operation At high altitude, the standard cessively rich. Performance increase. High altitude performance diameter main fuel jet in the carburetor and readjusting the pilot screw. If you always operate the riding mower at altitudes higher than 6,000 feet above sea level, ask your authorized form these carburetor Even with suitable carburetor jetting, engine horsepower...

  • Page 27: Maintenance

    Periodic maintenance the best operating condition. Shut off the engine engine must be run, make sure the area is well ventilated. tains poisonous carbon CAUTION: 0 If the engine must above the anti-cavitation receive sufficient cooling 0 To maintain cooling fresh water after each use in salt water.
  • Page 28 Tool kit and Fpare parts The following tools and spare paits are supplied with the outboard motor for maintenance, adjustment, TOOL KIT 10 x 12 mm WRENCH SOCKET WRENCH SHEAR PINS and emergency FLAT SCREWDRIVER PHILLIPS SCREWDRIVER SCREWDRIVER HANDLE repairs. PLIERS TOOL BAG PLUG...
  • Page 29 Engine Oil Change Drain the oil while the engine is still warm to assure rapid and complete draining. 1. Turn the fuel valve lever OFF, and close the fuel cap vent knob. 2. Remove the oil filler cap, and turn the motor on its side to drain the oil. 3.
  • Page 30 Gear Oil Check/Change Oil Level Check Check the oil level when engine is in the vertical position. Remove the/level bolt and see if oil flows out. If no oil comes out, fill through the drain bolt hole until the oil starts to flow out through the level bolt hole. If there is water in the oil, the water will flow out first when the drain bolt is removed, or the oil will be a milky color.
  • Page 31 Spark Plug Service Recommended spark plug: BMR-4A (NGK) 1. Remove the engine cover. 2. Remove the spark plug cap. 3,Use the wrench supplied in the tool kit to remove the spark plug. 4.Visually inspect the spark plug. Discard it if the insulator is cracked or chipped.
  • Page 32 Cleaning and Flushing After each use in salt water or dirty water, thoroughly outboard motor. 1. Wash the outside of the outboard motor with clean, fresh water. 2. Remove the propeller. 3. Stand the motor in a suitable container of water. The water level must be at least 4 inches above the anti-cavitation 4.
  • Page 33 Lubrication Wipe the outside of the engine with a cloth dipped in oil. Apply marine anti- corrosion grease to the following THROTTLE LEVER TILT LEVER CLAMP SCREW STEERING FRICTION BOLT ADJUSTING GREASE NIPPLE parts: ’...
  • Page 34 Shear Pin Change A shear pin is used to protect the propeller and drive mechanism damage when the propeller strikes an obstruction. 1. Remove the cotter pin and the propeller. 2. Remove the broken shear pin and replace it with a new one. 3.
  • Page 35 Servicing a Submerged A submerged motor must be serviced immediately from the water in order to minimize corrosion. If there is a Honda outboard motor dealership nearby, take the motor im- mediately to the dealer. If you are far from a dealership, proceed as follows: 1.

  • Page 36: Transporting/Storage

    10. TRANSP6RTlNG 1. Drain the water from the extension While depressing the engine stop button to prevent starting, starter rdpe several times to expel the water from the extension CAUTION: 0 Do not rest the motor from the extension system. 0 In cold weather, to prevent ice from forming...
  • Page 37 3.To carry, hold the motor by the carrying handle. Do not carry by the engine cover. 4. Transport and store the motor either vertically or horizontally, here. Vertical transport or storage: Attach the stern bracket to a stand. Horizontal transport (the side opposite the.

  • Page 38: Troubleshooting

    11. TROUBLESHOOTING Engine Will Not Start: 1. Is there fuel in the fuel tank? 2. Is the fuel cap vent knob turned to 3. Is fuel reaching the carburetor? Loosen the carburetor drain screw to see if there is fuel in the carburetor float bowl.

  • Page 39: Specifications

    Item output Full throttle range Engine type Displacement Valve tappet clearance Spark plug gap Starter system Ignition system Lubrication system Specified Oil capacity Cooling system Exhaust system Spark plug Fuel Tank capacity Steering equipment Tilt angle Angle of rotation Overall length X height X width...

  • Page 40: Optional Parts

    PARTS 13. OPTIONAL GEAR OIL...

  • Page 41: Warranty Service

    Owner Satisfaction Your satisfaction and goodwill Honda warranty details are explained in the Distributor’s Normally, any problems concerning dealer’s service department. been handled to your satisfaction, action: Discuss your problem with a member of dealership management. complaints can be quickly already been reviewed the dealership or the General Manager.
  • Page 42 Current customer service contact information: Your owner's manual was written to cover most of the questions you might ask about your Honda. Any questions not answered in the owner's manual can be answered by your Honda dealer. If your dealer doesn't have an immediate answer, they should be able to get it for you.
  • Page 43 MEMO...

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