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Thank you for purchasing a Honda
Outboard Motor.
This manual covers operation and
maintenance of the Honda BF4A/
BF5D/BF6A Outboard Motors.
All information in this publication is
based on the latest product
information 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 incurring
any obligation.
No part of this publication may be
reproduced without written
permission.
This manual should be considered a
permanent part of the Outboard
Motor and should remain with it if it
is resold.
Throughout this manual, you will see
safety messages proceeded by the
following words and symbols. Here's
what they mean:
Indicates serious injury or death
WILL result if instructions are not
followed.
Indicates a strong possibility that
serious personal injury or death
may result if instructions are not
followed.
Indicates a possibility that personal
injury or equipment damage could
result if instructions are not
followed.
Indicates that equipment or
property damage could result if
instructions are not followed.
Gives helpful information.
If a problem should arise, or if you
have any questions about the
Outboard Motor, consult an
authorized Honda Outboard Motor
dealer.
Honda Outboard Motors are
designed to give safe and
dependable service if operated
according to instructions. Read and
understand the Owner's Manual
before operating the Outboard
Motor. Failure to do so could result
in personal injury or equipment
damage.
• The illustration may vary
according to the type.
Honda Motor Co., Ltd. 2016, All
Rights Reserved
1

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Table of Contents

   Also See for Honda BF4A

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   Summary of Contents for Honda BF4A

  • Page 1 Thank you for purchasing a Honda Throughout this manual, you will see If a problem should arise, or if you Outboard Motor. safety messages proceeded by the have any questions about the following words and symbols. Here’s Outboard Motor, consult an...
  • Page 2 ● *: Optional equipment Note that the types of the outboard motor differ according to the countries where they are sold. BF4A/BF5D/BF6A are provided with the • According to Shaft Length TYPE CODE (Example) following types according to the shaft length, S: Short Shaft control system, and charging system.
  • Page 3 Check the type of your outboard The frame serial number is stamped ENGINE SERIAL NUMBER motor and read this Owner’s Manual on a plate attached on the left side of thoroughly before operation. the stern bracket. Texts with no type indication are the The engine serial number is located information and/or procedures on the cylinder block.
  • Page 4: Table Of Contents

    CONTENTS 1. SAFETY ..............6 Fuel Inlet Cap and Fuel Inlet (BF5D and BF6A) ..23 SAFETY INFORMATION ........6 Fuel Line Connector ..........24 2. SAFETY LABEL LOCATIONS ........ 9 5. INSTALLATION ............25 CE mark location ............. 11 Transom Height ............25 3.
  • Page 5 15. TROUBLESHOOTING ...........96 Transporting ............64 16. SPECIFICATIONS ..........98 Trailering ..............67 17. MAJOR Honda DISTRIBUTOR ADDRESSES ...102 11. CLEANING AND FLUSHING ......68 18. ‘‘EC DECLARATION OF CONFORMITY’’ With Water Hose Joint (Optional equipment) ..68 CONTENT OUTLINE ...........105 Without Water Hose Joint ........
  • Page 6: Safety

    If any fuel is spilled make sure that the area is dry before starting the engine. • Honda outboard motor is designed to give safe and dependable service if • Gasoline is harmful or fatal if operated according to swallowed.
  • Page 7 SAFETY • Know how to stop the engine • Do not attempt to modify the quickly in case of emergency. outboard motor. Understand the use of all controls. • Always wear a life-jacket when on • Do not exceed the boat board.
  • Page 8 SAFETY • Refuel carefully to avoid spilling Carbon Monoxide Poisoning fuel. Avoid overfilling the fuel tank Hazard (there should be no fuel in the filler Exhaust contains poisonous carbon neck). After refueling, tighten the monoxide, a colorless and odorless fuel filler cap securely. gas.
  • Page 9: Safety Label Locations

    These labels and indications warn you of potential hazards that can cause serious injury. Read the labels, indications and safety notes and precautions described in this manual carefully. If a label comes off or becomes hard to read, contact your Honda outboard motor dealer for a replacement. READ OWNER’S MANUAL GEAR SHIFTING READ OWNER’S MANUAL...
  • Page 10 SAFETY LABEL LOCATIONS (Optional equipment for BF5D and BF6A) GASOLINE FLAMMABLE DANGER FUEL CAUTION GAZOLINE INFLAMMABLE DANGEREUX GASOLINA PELIGRO FLAMABLE DANGER HARMFUL OR FATAL IF SWALLOWED. KEEP OUT OF REACH OF CHILDREN. IF SWALLOWED, DO NOT INDUCE VOMITING. CALL A PHYSICIAN IMMEDIATELY.
  • Page 11: Ce Mark Location

    SAFETY LABEL LOCATIONS CE mark location [U type] CE MARK (1) Model Name (2) Engine family name (3) Year code (10) (4) Rated power (5) Dry mass (weight) (with propeller) (6) Country of manufacture (7) Frame number (8) Manufacture and address (9) Name and address of authorized representative and importer (10)The identification number of the...
  • Page 12: Component Identification

    3. COMPONENT IDENTIFICATION OIL FILLER CAP/ SHIFT LEVER DIPSTICK FUEL FILLER CAP FUEL FILLER CAP ENGINE COVER VENT KNOB STARTER GRIP SPARK PLUG FUEL VALVE LEVER THROTTLE GRIP TILLER ENGINE COVER COOLING HANDLE LATCH THROTTLE WATER CHECK FRICTION KNOB HOLE HANDLE STOPPER TILT LEVER...
  • Page 13 COMPONENT IDENTIFICATION (Optional equipment for BF5D and BF6A) FUEL INLET CAP (BF5D and BF6A only) FUEL INLET (BF5D and BF6A only) FUEL GAUGE OIL PRESSURE PORTABLE FUEL TANK INDICATOR LIGHT EMERGENCY STOP SWITCH FUEL LINE CONNECTOR FUEL FILLER FUEL FILLER CAP CHOKE VENT KNOB KNOB...
  • Page 14: Controls

    4. CONTROLS Starter Grip Shift Lever NEUTRAL STARTER GRIP NEUTRAL REVERSE FORWARD SHIFT LEVER REVERSE FORWARD Pulling the starter grip operates the recoil starter to crank the engine for starting. Set the shift lever in the NEUTRAL position before starting. Use the shift lever to run the boat in FORWARD: The boat moves ahead.
  • Page 15: Fuel Valve Lever

    When the engine is not in use, leave the fuel valve lever in the OFF position to prevent carburetor flooding and to FUEL reduce the possibility of fuel leakage. VALVE OFF (BF4A) or PORTABLE (BF5D and BF6A) LEVER FUEL TANK POSITION (BF5D and BF6A) (BF5D and BF6A) The fuel valve lever has internal fuel tank position and portable fuel tank position.
  • Page 16: Handle Stopper

    CONTROLS (BF4A): Handle Stopper LEVER POSITION FUNCTION Fuel from the internal fuel tank is supplied. Fuel supply is shut off. Set the fuel valve lever to the “OFF” position during transporting or storing the outboard motor. (BF5D and BF6A): HANDLE...
  • Page 17: Choke Knob

    CONTROLS Choke Knob Throttle Grip Throttle Friction Knob THROTTLE FRICTION KNOB CHOKE KNOB THROTTLE GRIP RELEASE FAST THROTTLE GRIP When the engine is cold, pull the The throttle friction knob adjusts choke knob to start easily. Rich fuel resistance to throttle grip rotation. FAST mixture is provided to the engine by Turn the throttle friction knob...
  • Page 18: Fuel Primer Bulb

    CONTROLS Fuel Primer Bulb Emergency Stop Switch Emergency Stop Switch Lanyard/ (Optional equipment for BF5D and Clip EMERGENCY BF6A) EMERGENCY STOP STOP SWITCH SWITCH LANYARD ARROW OUTLET END PRESS PRIMER BULB EMERGENCY STOP SWITCH CLIP The emergency stop switch lanyard is provided to stop the engine INLET END immediately when the operator falls...
  • Page 19: Oil Pressure Indicator Light

    CONTROLS Oil Pressure Indicator Light EMERGENCY STOP SWITCH EMERGENCY STOP SWITCH STOP CLIP EMERGENCY STOP SWITCH LANYARD SPARE EMERGENCY STOP SWITCH CLIP OIL PRESSURE INDICATOR LIGHT emergency stop switch lanyard securely to the operator. If the emergency stop switch lanyard is not set, the boat might The engine does not start unless the run out of control when the operator, for example, falls...
  • Page 20: Tilt Lever

    CONTROLS Tilt Lever Anode Metal Cooling Water Check Hole ANODE METAL TILT LEVER Use the tilt lever to temporarily raise COOLING WATER CHECK HOLE The anode metal is a sacrificed metal the outboard motor when the boat is which protects the outboard motor running in the shallows, or mooring from corrosion.
  • Page 21: Cooling Water Intake Port

    CONTROLS Cooling Water Intake Port Engine Cover Latch Steering Friction Bolt STEERING FRICTION BOLT TO DECREASE FRICTION TO INCREASE FRICTION COOLING WATER ENGINE COVER LATCH INTAKE PORT The engine cooling water is drawn Latch/unlatch the engine cover latch The steering friction bolt adjusts into the engine through this port.
  • Page 22: Transom Angle Adjusting Rod

    CONTROLS Transom Angle Adjusting Rod Fuel Filler Cap Vent Knob/Fuel Gauge (Portable Fuel Tank) (Optional equipment for BF5D and BF6A) FUEL FILLER CAP FUEL GAUGE VENT KNOB OPEN CLOSE TRANSOM ANGLE ADJUSTING ROD Use the transom angle adjusting rod The fuel gauge indicates the fuel level The fuel filler cap vent knob shuts off to adjust the outboard motor angle in the tank.
  • Page 23: Fuel Filler Cap Vent Knob

    CONTROLS Fuel Filler Cap Vent Knob Clamp Screws Fuel Inlet Cap and Fuel Inlet (Internal Fuel Tank) (BF5D and BF6A) CLAMP SCREWS FUEL INLET OPEN CLOSE FUEL FILLER CAP FUEL FILLER CAP VENT KNOB FUEL INLET CAP The fuel filler cap vent knob shuts off Use the clamp screws to secure the Remove the fuel inlet cap and stern brackets to the transom.
  • Page 24: Fuel Line Connector

    CONTROLS Fuel Line Connector FUEL LINE CONNECTOR (Portable Fuel Tank) (Optional equipment for BF5D and BF6A) FUEL LINE CONNECTOR (OUTBOARD MOTOR SIDE) (FUEL TANK SIDE) The fuel line connector is used to connect the fuel line between the separate fuel tank and the outboard motor.
  • Page 25: Installation

    Transom Height We recommend that the outboard motor be installed by an authorized Honda outboard motor dealer. Consult the authorized Honda dealer in your area for the Y-OP (User Optional Parts)/equipments Install the outboard motor at the installation and operation.
  • Page 26: Installation Height

    INSTALLATION Installation Height The correct dimensions differ according to the type of the boats and With the boat in the water, properly the configuration of the bottom of the loaded, and the engine stopped, check boats. Follow the manufacture’s the installed depth of the outboard recommended installation height.
  • Page 27: Outboard Motor Attachment

    INSTALLATION Outboard Motor Attachment Outboard Motor Angle (Cruising) INCORRECT INCORRECT CAUSES BOAT TO ‘‘SQUAT’’ CAUSES BOAT TO ‘‘PLOW’’ STERN BRACKET O.K. SAFETY ROPE CLAMP SCREWS Attach the stern bracket to the transom and tighten the clamp CORRECT screws. GIVES MAXIMUM PERFORMANCE Install the outboard motor at the best The trim angle differs according to trim angle for stable cruising and...
  • Page 28 INSTALLATION <Outboard Motor Angle TO CHANGE UNLOCKED Adjustment> POSITION Adjust the outboard motor so that it is perpendicular to the water surface (i.e. axis of the propeller is parallel with the water surface). TRANSOM ANGLE ADJUSTING ROD TO LOCK TRANSOM ANGLE LOCKED POSITION ADJUSTING ROD 2.
  • Page 29: Battery Connections

    INSTALLATION Battery Connections • POISON: Electrolyte is poison. (+) TERMINAL (–) TERMINAL Use a battery which has 12V-28 Ah ANTIDOTE: or more specifications. ─ External: Flush thoroughly The battery is an optional part (i.e. with water. part to be purchased separately from ─...
  • Page 30: Battery Charge Cable

    INSTALLATION Battery Charge Cable (Equipped type) • Be sure to connect the (+) side BATTERY battery cable first. When disconnecting the cables, disconnect the (–) side first then the (+) side. • Unless the cables are properly connected to the terminals, the BATTERY CHARGE battery is not charged.
  • Page 31: Pre-operation Checks

    6. PRE-OPERATION CHECKS The BF4A/BF5D/BF6A are the Installing Engine Cover STARTER GRIP 4-stroke, water cooled outboard STARTER GRIP motor which uses unleaded regular gasoline for fuel. It also requires the engine oil. Check the following before operating the outboard motor.
  • Page 32: Engine Oil Level

    PRE-OPERATION CHECKS Engine Oil Level <Recommended oil> <Inspection and Refilling> Use Honda 4-stroke oil or an • Engine oil is a major factor equivalent high detergent, premium quality outboard motor oil certified to affecting engine performance and service life. Nondetergent meet or exceed U.S.
  • Page 33 PRE-OPERATION CHECKS When the engine oil is contaminated When you check the oil level with the dipstick, you might notice the engine oil or discolored, replace with the fresh appears milky or the oil level has increased. If you notice either condition, engine oil (see pages 72 and 74 for change the engine oil.
  • Page 34: Fuel Level

    PRE-OPERATION CHECKS Fuel Level (Internal Fuel Tank) UPPER LEVEL FUEL FILLER CAP UPPER LEVEL • Gasoline is extremely flammable and is explosive under certain conditions. • Refuel in a well-ventilated area with the engine stopped. • Do not smoke or allow flames or sparks in the area where the engine is refueled or where gasoline is stored.
  • Page 35 PRE-OPERATION CHECKS (Portable Fuel Tank) Fuel Level (Optional equipment for BF5D and BF6A) • Gasoline is extremely flammable FUEL FILLER CAP FUEL GAUGE and is explosive under certain VENT KNOB conditions. OPEN • Refuel in a well-ventilated area with the engine stopped. •...
  • Page 36: Gasoline Containing Alcohol

    (gasohol), be sure from the use of gasoline that its octane rating is at least as high as contains more alcohol than that recommended by Honda. There recommended is not covered under are two types of “gasohol”: one the warranty.
  • Page 37: Battery Electrolyte Level

    PRE-OPERATION CHECKS Battery Electrolyte Level ─ Internal: Drink large quantities of water or milk. UPPER LEVEL Batteries produce explosive gases: Follow with milk of magnesia If ignited, an explosion can cause or vegetable oil, and call a serious injury or blindness. Provide physician immediately.
  • Page 38: Other Checks

    PRE-OPERATION CHECKS Other Checks (5) TOOL KIT (page 71) (2) (Optional equipment for BF5D and BF6A) Check the following items: Parts/materials which should be The anode metal helps to protect the (1) The propeller and cotter pin for installed on board: outboard motor from corrosion damage or looseness.
  • Page 39: Starting The Engine

    1. Fill fuel to upper level of the TANK POSITION internal fuel tank. 3. Turn the fuel valve lever to the ON 2. Open the internal fuel filler cap vent position (BF4A) or internal fuel knob 2 to 3 turns counterclockwise. tank position (BF5D and BF6A).
  • Page 40: Fuel Tank And Vent Knob

    STARTING THE ENGINE Fuel Tank and Vent Knob (Optional equipment for BF5D and BF6A) [When using the portable fuel tank] Direction to pull FUEL FILLER CAP OPEN VENT KNOB CLOSE STARTER GRIP 5. Pull the starter grip about 10 times. The fuel tank must be properly line connector.
  • Page 41: Fuel Line Connection

    STARTING THE ENGINE Fuel Line Connection (Optional equipment for BF5D and BF6A) [When using the portable fuel tank] FUEL LINE CONNECTOR (FUEL TANK SIDE) Inspect the fuel line, and the O-ring 1. Connect the fuel line connector to seals in the fuel line connectors. the fuel tank.
  • Page 42 STARTING THE ENGINE FUEL LINE ARROW CONNECTOR OUTLET END (TO OUTBOARD MOTOR) FUEL PRIMER BULB INLET CLIP (OUTBOARD MOTOR SIDE) INLET END (TO FUEL TANK) 2. Remove the fuel inlet cap. 4. Turn the fuel valve lever to the 3. Connect the fuel line connector to portable fuel tank position (see 5.
  • Page 43: Starting The Engine

    STARTING THE ENGINE Starting the Engine EMERGENCY EMERGENCY STOP SWITCH STOP SWITCH If the operator does not attach the CLIP emergency stop switch lanyard, Exhaust contains poisonous carbon and is thrown from his seat or out monoxide which can cause of the boat, the out-of-control boat unconsciousness and may lead to can seriously injure the operator,...
  • Page 44 INTERNAL FUEL TANK POSITION 2. (When using the internal fuel tank) Turn the fuel valve lever to the ON CLOSE FUEL position (BF4A) or internal fuel VALVE OFF (BF4A) or PORTABLE LEVER tank position (BF5D and BF6A). FUEL TANK POSITION...
  • Page 45 STARTING THE ENGINE CHOKE KNOB MARK NEUTRAL SHIFT LEVER THROTTLE GRIP NEUTRAL 5. When the engine is cold or ambient temperature is low, pull the choke knob to the ON position. (It provides rich fuel mixture to the engine.) START 3.
  • Page 46 STARTING THE ENGINE Direction to pull OIL PRESSURE INDICATOR LIGHT STARTER GRIP 6. Pull the starter grip lightly until you feel resistance, then pull OIL PRESSURE • The “Neutral Starting System” INDICATOR briskly in the direction of the arrow prevents the starter rope from being LIGHT as shown above.
  • Page 47 If water still does not flow of water flowing out of the check out, have your outboard motor hole might vary due to the checked by an authorized Honda thermostat operation, but this is outboard motor dealer. Do not normal.
  • Page 48: Emergency Starting

    STARTING THE ENGINE Emergency Starting COVER HOOKS The ‘‘Neutral Starting System’’ will If the recoil starter does not operate not work in emergency starting. Be properly for some reasons, the engine sure to set the shift lever into can be started using the emergency NEUTRAL position to prevent starter rope that came with your start-in-gear when starting the...
  • Page 49 STARTING THE ENGINE THOROTTLE CABLES 6 mm FLANGE BOLT (Tighten by hand) 6 mm FLANGE BOLT NEUTRAL START CABLE CABLE HOOK (Tighten by hand) 9. Hook the neutral start cable to the 7. Install and tighten the 6 mm flange under case.
  • Page 50 STARTING THE ENGINE EMERGENCY STOP SWITCH NEUTRAL SHIFT LEVER STOP NEUTRAL EMERGENCY STOP EMERGENCY STOP SWITCH CLIP SWITCH LANYARD The propeller and cooling water intake port must be lowered into the 10.Make sure the shift lever in the water, running the outboard motor out of the water will damage the water NEUTRAL position.
  • Page 51 STARTING THE ENGINE NOTCH CHOKE KNOB STARTER PULLEY MARK STARTER ROPE 12.When the engine is cold or ambient temperature is low, pull THROTTLE GRIP the choke knob to the ON position. KNOTTED END (It provides rich fuel mixture to the engine.) 14.Set the knotted end of the emergency starter rope in the notch in the starter pulley, and...
  • Page 52 19.After returning to the closest boat stall. landing, contact your closest authorized Honda outboard motor dealer and perform the following. Keep clear of moving parts. • Have the starting system and 17.Reinstall the engine cover (see electrical system checked.
  • Page 53: Troubleshooting Starting Problems

    STARTING THE ENGINE Troubleshooting Starting Problems SYMPTOM POSSIBLE CAUSE REMEDY The engine doesn’t start. Starter grip cannot be pulled out for starting the Set shift lever in NEUTRAL position. engine. (page 45) Emergency stop switch clip is not engaged. Engage the emergency stop switch clip. (page 43) Fuel filler cap vent knob not open.
  • Page 54: Operation

    8. OPERATION Break-in Procedure Gear Shifting Break-in operation allows the mating NEUTRAL surfaces of the moving parts to wear NEUTRAL evenly and thus ensures proper performance and longer outboard motor life. Break-in your new outboard motor as follows. REVERSE FORWARD •...
  • Page 55: Steering

    OPERATION Steering SLOW TO INCREASE TO DECREASE FRICTION FRICTION The boat swings its stern in the opposite direction in which it is to THROTTLE GRIP turn. To turn to the right, swing the STEERING FRICTION BOLT tiller handle to the left. To turn to the For smooth steering, adjust the left, swing the tiller handle to the steering friction bolt so that a slight...
  • Page 56: Cruising

    OPERATION 1. With the shift lever in the Cruising FORWARD position, turn the SHIFT LEVER FORWARD throttle grip in the FAST direction FORWARD to increase the speed. 2. For normal cruising, open the throttle about 3/4 turn. To hold the throttle grip at a steady setting, turn the throttle friction knob clockwise.
  • Page 57: Tilting The Outboard Motor

    NEUTRAL position and stop the engine. (see page 14). SHIFT LEVER 2. Turn the fuel valve lever to the OFF position (BF4A) or portable 5. Move the tilt lever to the “TILT” fuel tank position (BF5D and position. Hold the engine cover NEUTRAL BF6A) (see page 15).
  • Page 58 OPERATION TILT LEVER 18° (when cruising in 58° (when mooring) 34° shallow water) 6. Set the tilt lever in the “TILT” 7. To return the outboard motor to the position, and raise the outboard normal “RUN” position, move the • Make sure water comes out from motor to any of the 18°, 34°...
  • Page 59 Correct or service as necessary, by contacting your authorized Honda outboard motor dealer. To avoid damaging the outboard motor, use the utmost care when mooring a boat, especially when its outboard motor is tilted up.
  • Page 60: Cruising In Shallows

    Honda outboard motor dealer than 1,500 m (5,000 feet) above sea • When the outboard motor is return the carburetor to original level, have your authorized Honda tilted up, cruise at low speed. factory specifications. dealer perform these carburetor modifications.
  • Page 61: Stopping The Engine

    9. STOPPING THE ENGINE Stopping the Engine SLOW EMERGENCY STOP SWITCH CLIP SLOW EMERGENCY STOP SWITCH THROTTLE GRIP PULL NEUTRAL EMERGENCY STOP NEUTRAL SWITCH LANYARD • In an emergency; Disengage the emergency stop switch clip from the emergency stop switch by pulling the emergency stop switch lanyard.
  • Page 62 4. If you are using the internal fuel tank, turn the fuel valve lever to the STOP OFF position (BF4A) or portable fuel tank position (BF5D and BF6A) (see page 15) and close the internal fuel tank vent by turning 2.
  • Page 63: Transporting

    OFF causing serious injury or death. position (BF4A) or portable fuel tank • Be careful not to spill fuel. position (BF5D and BF6A) (see page Spilled fuel or fuel vapor may 15) and close the internal fuel tank ignite.
  • Page 64: Transporting

    TRANSPORTING Transporting CARRYING HANDLE Carry the outboard motor with more than two people. To carry, hold the To avoid damaging the outboard Do not carry the outboard motor outboard motor by the carrying motor, never use it as a handle for by the engine cover.
  • Page 65 TRANSPORTING Transport the outboard motor either Vertical transport STERN BRACKET vertically or horizontally as follows with the tiller handle raised. MOTOR STAND 2. Move the shift lever to the 1. Attach the stern brackets to a motor REVERSE position and lock the stand and mount the outboard tilt lever.
  • Page 66 TRANSPORTING Horizontal transport INCORRECT CASE PROTECTORS PROTECTOR Rest the outboard motor on the case protectors. (With tiller handle side of Any other transport or storage the outboard motor upward) position may cause damage or oil leakage. Always rest the outboard motor on a protector and be sure to protect it from impact and damage.
  • Page 67: Trailering

    TRANSPORTING Trailering Close the internal fuel tank vent by turning the vent knob clockwise all the way or drain the gasoline. If you will be transporting the outboard TO INCREASE TO DECREASE motor. FRICTION FRICTION STEERING FRICTION BOLT damaged if the outboard motor When trailering or transporting the drops.
  • Page 68: Cleaning And Flushing

    11. CLEANING AND FLUSHING After each use in salt water or dirty With Water Hose Joint water, thoroughly clean and flush the (Optional equipment) NEUTRAL outboard motor with fresh water. WATER HOSE JOINT • For safety, the propeller must be removed.
  • Page 69: Without Water Hose Joint

    6. After flushing, stop the engine. tank, turn the fuel valve lever to the If you are using the internal fuel OFF position (BF4A) or portable tank, turn the fuel valve lever to the fuel tank position (BF5D and OFF position (BF4A) or portable...
  • Page 70: Maintenance

    Shut off the engine before engine will overheat. performing any maintenance. If • Use only Honda Genuine parts or the engine must be run, make their equivalents for sure the area is well ventilated. maintenance or repair. The use of...
  • Page 71: Tool Kit And Spare Parts

    MAINTENANCE Tool Kit and Spare Parts TOOL KIT The following tools and spare parts are supplied with the outboard motor 10 × 12 mm for maintenance, adjustment, and WRENCH EMERGENCY STARTER ROPE emergency repairs. Spare shear pin and cotter pin are located inside the engine FLAT PLIERS...
  • Page 72: Maintenance Schedule

    (1) Lubricate more frequently when used in salt water. (2) These items should be serviced by an authorized Honda Marine dealer, unless you have the proper tools and are mechanically proficient. Refer to the Honda Shop Manual for service procedures.
  • Page 73 Engine condition (7) Check (2) These items should be serviced by an authorized Honda Marine dealer, unless you have the proper tools and are mechanically proficient. Refer to the Honda Shop Manual for service procedures. (3) For professional commercial use, log hours of operation to determine proper maintenance intervals.
  • Page 74: Engine Oil Change

    MAINTENANCE Engine Oil Change Oil change interval: <Engine Oil Replacement> Insufficient or contaminated engine 20 operating hours after the date of oil adversely affects the service life of purchase or first month for initial the sliding and moving parts. replacement, then every 100 operating hours or 6 months.
  • Page 75 MAINTENANCE UPPER LEVEL 0.55 L (0.58 US qt, 0.48 Imp qt) DIPSTICK LOWER LEVEL 0.45 L (0.48 US qt, 0.40 Imp qt) DRAIN BOLT 2. Remove the engine oil drain bolt 3. Refill to the upper level mark on 4. Reinstall the oil filler cap securely. and sealing washer, and drain the the dipstick with the recommended 5.
  • Page 76: Gear Oil Change

    Honda OIL DRAIN PLUG TORQUE: drain plug and washers. Marine dealer. 3.5 N·m (0.36 kgf·m , 2.6 lbf·ft) 3.
  • Page 77: Starter Rope Check

    MAINTENANCE Starter Rope Check STARTER ROPE Check the starter rope every 6 months or after every 100 operating hours. Replace the rope if it is frayed.
  • Page 78: Spark Plug Service

    MAINTENANCE Spark Plug Service SPARK PLUG WRENCH New plug Plug needing To ensure proper engine operation, replacement the spark plug must be properly gapped and free of deposits. The spark plug becomes very hot during operation and will remain hot to awhile after stopping the engine.
  • Page 79 MAINTENANCE 6. Check the spark plug washer is in SIDE ELECTRODE good condition, and thread the plug in by hand to prevent cross 0.6 – 0.7 mm (0.024 – 0.028 in) threading. 7. After the spark plug is seated, SEALING WASHER tighten with a spark plug wrench to compress the washer.
  • Page 80: Battery Service

    MAINTENANCE Battery Service • CHEMICAL HAZARD: Battery electrolyte contains sulfuric acid. Contact with eyes or skin, even Battery handling differs according through clothing, may cause to the type of the battery and the severe burns. Wear a faceshield instructions described below might and protective clothing.
  • Page 81 MAINTENANCE <Battery Cleaning> 3. Connect the battery positive (+) cable (red terminal cover) to the POSITIVE (+) battery positive (+) terminal, then NEGATIVE (–) TERMINAL TERMINAL the battery negative (–) cable (black terminal cover) to the battery negative (–) terminal. Tighten the bolts and nuts securely.
  • Page 82: Lubrication

    MAINTENANCE Lubrication Wipe the outside of the engine with a cloth dipped in clean oil. Apply marine anticorrosion grease to the following parts: Lubrication interval: 20 operating hours or a month after the date of purchase SHIFT SHAFT for initial lubrication, then every 100 operating hours or 6 months.
  • Page 83: Fuel Filter Check/replacement

    MAINTENANCE Fuel Filter Check/Replacement <Inspection> The fuel filter is located between the 1. Remove the engine cover (see page • Gasoline is extremely fuel valve and the fuel pump. 31). flammable, and gasoline vapor Water or sediment accumulated in the 2.
  • Page 84 1. Turn the fuel valve lever to the and install the fuel inlet cap (see sediment accumulated in the fuel OFF position (BF4A) or portable page 23). filter, inspect the fuel tank. Clean fuel tank position (BF5D and 4.
  • Page 85: Fuel Tank Cleaning And Tank Filter Cleaning

    MAINTENANCE Fuel Tank Cleaning and Tank Filter Cleaning (Portable Fuel Tank) Clean the fuel tank and tank filter (Optional equipment for BF5D and BF6A) every year or after every 200 operating hours. <Fuel Tank Cleaning> 1. Disconnect the fuel line connector from fuel tank.
  • Page 86: Replacing The Fuse

    MAINTENANCE <Tank Filter Cleaning> Replacing the Fuse (Equipped type) 5 mm SCREWS The fuse is attached to the battery charge cable. CONNECTOR GASKET SPARE FUSE FUSE BLOWN FUSE FUSE CASE LID FUEL TANK FILTER If the fuse blows, running the engine <Designated fuse>...
  • Page 87: Propeller And Shear Pin Change

    4. Install a new cotter pin, and spread To protect your hands, wear the the ends of it as shown. heavy gloves during replacement. Replacement Use a Honda Genuine shear pin and 1. Remove the cotter pin, the cotter pin. propeller cap and the propeller.
  • Page 88: Servicing A Submerged Outboard Motor

    If the engine binds when minimize corrosion. cranked, do not attempt to run If there is a Honda outboard motor the outboard motor until it has dealership nearby, take the outboard been repaired.
  • Page 89 8. As soon as possible, take the then pull the starter grip several times outboard motor to a Honda to lubricate the inside of the cylinder. outboard motor dealer for Reinstall the spark plug and engage...
  • Page 90: Storage

    • To slow deterioration, keep motor, have your outboard motor gasoline in a certified fuel Close the internal fuel tank vent by serviced by an authorized Honda container. turning the vent knob clockwise all outboard motor dealer before storage. • If long storage (more than 30 days) the way.
  • Page 91: Outboard Motor Storage

    3. Turn the fuel valve lever to the ON 7. After draining thoroughly, tighten Outboard Motor Storage the drain screws securely. Be sure position (BF4A) or internal fuel 1. Tilt the outboard motor, remove the to drain thoroughly as the gasoline tank position (BF5D and BF6A), engine cover and plug cap, pull the deteriorates as time goes by.
  • Page 92: Battery Storage

    STORAGE 2. Change the engine oil. Battery Storage • Keep flames and sparks away, 3. Remove the spark plug, and pour and do not smoke in the area. ANTIDOTE: If electrolyte gets about a tablespoon (5 - 10 cm ) of Battery handling differs according into your eyes, flush thoroughly clean engine oil into the cylinder.
  • Page 93 STORAGE (+) TERMINAL (–) TERMINAL TERMINAL COVER BLACK TERMINAL COVER 1. Disconnect the battery cable at the battery negative (–) terminal, then 3. Fill the battery with distilled water at the battery positive (+) terminal. to the upper level line. Never 2.
  • Page 94: Storage Position Of The Outboard Motor

    STORAGE Storage Position of the Outboard Horizontal storage Motor INCORRECT Store the outboard motor either vertically or horizontally as follows with the tiller handle raised. Vertical storage CASE PROTECTORS Rest the outboard motor on the case protectors. Any other transport or storage (With tiller handle side of the position may cause damage or oil outboard motor upward)
  • Page 95: Disposal

    14. DISPOSAL To protect the environment, do not dispose of this product, battery, engine oil, etc. carelessly by leaving them in the waste. Observe the local laws and regulations or consult your dealer for disposal.
  • Page 96: Troubleshooting

    15. TROUBLESHOOTING <Engine fails to start> 9. Engine is flooded. Clean and dry the spark plug. (page 78) 1. Emergency stop switch Engage the emergency 10. Plug cap is not installed Install plug cap securely. clip is not engaged. stop switch clip in place. properly.
  • Page 97 (page 32) 3. Thermostat is faulty. Consult with an 4. Unmatched propeller is Consult with an authorized Honda selected. authorized Honda outboard motor dealer. outboard motor dealer. 4. Cavitation. Install the outboard 5. Passengers are not...
  • Page 98: Specifications

    3 – 200 × 170 mm (3 – 7-7/8 × 6-3/4 in)*3 (No. of blades – *4 For D types 3 – 200 × 190 mm (3 – 7-7/8 × 7-1/2 in)*4 diameter × pitch) Honda outboards are power rated in accordance with ISO8665 (propeller shaft output).
  • Page 99 3 – 200 × 170 mm (3 – 7-7/8 × 6-3/4 in)*3 (No. of blades – *3 For U types 3 – 200 × 190 mm (3 – 7-7/8 × 7-1/2 in)*4 diameter × *4 For D types pitch) Honda outboards are power rated in accordance with ISO8665 (propeller shaft output).
  • Page 100 3 – 200 × 170 mm (3 – 7-7/8 × 6-3/4 in)*3 (No. of blades – 3 – 200 × 190 mm (3 – 7-7/8 × 7-1/2 in)*4 *4 For D types diameter × pitch) Honda outboards are power rated in accordance with ISO8665 (propeller shaft output).
  • Page 101 SPECIFICATIONS Noise and Vibration [U type] MODEL BF4A BF5D BF6A CONTROL SYSTEM T (Tiller handle) T (Tiller handle) T (Tiller handle) Sound Pressure level at operator’s ears 75 dB (A) 77 dB (A) 79 dB (A) (2006/42/EC, ICOMIA 39-94) Uncertainty...
  • Page 102: Major Honda Distributor Addresses

    17. MAJOR Honda DISTRIBUTOR ADDRESSES For further information, please contact Honda Customer Information Centre at the following address or telephone number: For European AUSTRIA BULGARIA CZECH REPUBLIC FRANCE Honda Austria GmbH Kirov Ltd. BG Technik cs, a.s. Honda Motor Europe Ltd...
  • Page 103 MAJOR Honda DISTRIBUTOR ADDRESSES For further information, please contact Honda Customer Information Centre at the following address or telephone number: For European (continued) HUNGARY ITALY NORWAY REPUBLIC OF BELARUS Motor Pedo Co., Ltd. Honda Italia Industriale S.p.A. AS Kellox Kamaraerdei ut 3.
  • Page 104 MAJOR Honda DISTRIBUTOR ADDRESSES For further information, please contact Honda Customer Information Centre at the following address or telephone number: For European (continued) SERBIA & SPAIN & SWITZERLAND UNITED KINGDOM MONTENEGRO Las Palmas province Honda Motor Europe Ltd Honda Motor Europe Ltd 10 Route des Moulières...
  • Page 105: Ec Declaration Of Conformity'' Content Outline

    18. ‘‘EC DECLARATION OF CONFORMITY’’ CONTENT OUTLINE...
  • Page 106 ‘‘EC DECLARATION OF CONFORMITY’’ CONTENT OUTLINE...
  • Page 107 ‘‘EC DECLARATION OF CONFORMITY’’ CONTENT OUTLINE...
  • Page 108 ‘‘EC DECLARATION OF CONFORMITY’’ CONTENT OUTLINE...
  • Page 109 ‘‘EC DECLARATION OF CONFORMITY’’ CONTENT OUTLINE...
  • Page 110: Index

    19. INDEX ............22 Adjusting Rod ‘‘EC DECLARATION OF CONFORMITY’’ CONTENT ............20 ............105 Anode Metal OUTLINE Emergency ............... 48 Starting ............18 Stop Switch ........30 Battery Charging DC Cable ........18 ..........29 Stop Switch Lanyard/Clip Battery Connections ..........
  • Page 111 INDEX ..............90 ............38 Storage Other Checks ......85 Tank and Tank Filter Cleaning Outboard Motor ........22 ..............27 Angle Tank and Vent Knob ............27 Attachment ..............91 Storage ............59 Over-rev Limiter ........36 Gasoline Containing Alcohol ............
  • Page 112 INDEX ..........61 Stopping the Engine ..............90 Storage ......94 Position of the Outboard Motor Throttle ............17 Friction Knob ..............17 Grip ..............20 Tilt Lever ........57 Tilting the Outboard Motor ........... 71 Tool Kit and Spare Parts ..............

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