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Honda BF45A Owner's Manual

Honda power equipment outboard motor owner's manual
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Engine Oil
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13. Specifications
Table of Contents
Includes 31ZV360S supplement
for the BF45A LHTA

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  Also See for Honda BF45A

Honda BF35A Service Manual
Honda BF35A Service Manual 431 pages

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  Summary of Contents for Honda BF45A

  • Page 1 Includes 31ZV360S supplement for the BF45A LHTA...
  • Page 3 Thank you for purchasing a Honda Outboard Motor. This manual describes the operation and maintenance of the Honda BF35A/45A Outboard Motors. All information in this publication is based on the latest product informa- tion available at the time of printing. Honda Motor Co., Ltd.
  • Page 4 TYPES OF HONDA BF3§A/45A OUTBOARD MOTORS It may be necessary to refer_tcthis chart for reference purposes when reading this manual Model BF35 BF45 S: Short Shaft L: Long Shaft X: Extra Long Shaft H: Tiller Handle R: Remote Control T: Power Trim/Tilt The gas assisted tilt type motors use a gas damper to assist when manually tilting the motor.
  • Page 5 PRODUCT IDENTIFICATION NUMBER Record the Product Identification Number (RLN.) and the Engine Serial Number for your reference. Refer to the Product Identification Number when ordering parts, and when mak- ing technical or warranty inquiries (see page 99). IDENTIFICATION STARTER MOTOR ENGINE~SERIAL NUMBER The Product Identification Number is.

  • Page 6: Table Of Contents

    CONTENTS 1. SAFKI-Y Safety labels ..6 Safety information ... 7 2. COMPONENT IDENTIFICATION 3. CONTROLS Tiller handle type Engine start button ... 11 Shift lever ... 11 Choke knob ... 11 Throttle grip ... 12 Throttle opening indicator ... 12 Throttle friction knob ...
  • Page 7 Tiller handle type Gearshifting ... 50 Steering ... 51 Cruising ... 5 1 Remote control type Gear shifting ... 52 Cruising ... 53 Tilting motor Gas assisted tilt type ... 54 Power trim/tilt type ... 57 Power trim/tilt type Trim meter ... 58 Power tilt switch (motor pan) ...

  • Page 8: Safety Labels

    1. SAFETY SAFETY LABELS These labels are in the locations shown. They warn you of potentia1 hazards that could seriously injure Frn~4.~~~~~MI-~ICan~INLWunr~ FLAMMABLE you. Read these labels carefully. EXTREMELY DANGER...

  • Page 9: Safety Information

    Stop the engine immediately if any one falls overboard. Do not run the motor while the boat is near anyone in the water. Attach the emergency stop switch lanyard securely to the operator. Before operating the outboard motor, familiarize yourself with all...
  • Page 10 2. COMPONENT IDENTIFICATION THROTTLE GRIP ldiir-7 HANDLE THdT LOCK STERN BRACKET ANTI-VENTILATION D, ATE- &l I Y...-.-..YL WASH PLUG PROPEL1 -- (Flush plug) GEAR OIL DRAIN PLUG (TILLER HANDLE TYPE) COOLING ACCESS COVER WATER INTAKE ‘RIM TAB LEVER on, PReS\SURE INDICATOR LIGHT THROTTLE _____- ~~~ FRICTION KNOB...
  • Page 11 2. COMPONENT ENGINE COVER FUEL LINE POWER TILT CONNECTOR SWI;rCH STEERING TRANSOM ANGLE MANUA< ACCESS COVER RELIEF VALVE GEAR OIL / LEVEL PLUG GEAR DRAIN PLUG PROPELLER IDENTIFICATION OIL FILLER CAP CHOKE KNOB COOLING /e-r INDICATOR ENGINE OIL ’ ETAL) HAUST PORT WA”“”...

  • Page 12: Component Identification

    2. COMPONENT IDENTIFICATION POWER TRIM/TILT TYPES VENT KNOB FUEL GAUGE FUEL CAP TACHOMETER TRIM METER FiJEL HOSE CONNECTOR (FEMALE) PRIMER BULB...

  • Page 13: Controls

    3. CONTROLS Shift Lever (reverse) SHIti LEVER There are three gearshift lever posi- tions. F (forward): The boat moves forward. N (neutral): The transmission gears are disengaged from the engine. R (reverse): The boat reverses. (TILLER HANDLE TYPE) Choke Knob...

  • Page 14: Throttle Grip

    3. CONTROLS (TILLER HANDLE TYPE) Throttle Grip THROTTLE GRIP Turn the grip clockwise or counter- clockwise to adjust the engine speed. Turning the grip in the direction shown by the arrow increases engine speed. Throttle opening indicator THROTTLE OIPENING INDICATOR The curve on the grip indicates throttle opening.

  • Page 15: Engine Stop Switch

    Engine Stop Switch ENGINE STOP StiTCH Push the engine stop switch to stop the engine. 3. CONTROLS Emergency Stop Switch Lanyard EMERGENCY STOP SWITCH CLIP The emergency stop switch lanyard is provided to stop the engine immedi- ately in the event the operator should fall overboard or away from the con- trols.

  • Page 16: Oil Pressure Indicator Light

    3. CONTROLS (TILLER SPARE EMERGENCY ,STOP SWITCH CLIP A spare emergency stop switch clip is provided near the engine stop switch. HANDLE TYPE) Oil Pressure I’ndicator Light I I- OIL PRESSURE INDICATOR LIGHT The green oil pressure indicator light is normally ON when the outboard motor is running.

  • Page 17: Remote Control Lever

    (approximately 30” from the N position) will engage the forward gear. Moving the lever further from the F position will increase the throttle opening and the boat for- ward speed. N (neutral): The engine idles and the transmis- sion gears are disengaged.

  • Page 18: Neutral Release Lever

    3. CONTROLS (REMOTE CONTROL TYPE) Neutral Release Lever The neutral release lever is on the remote control lever to prevent an accidental gear engagement. The remote control lever will not engage forward or reverse gear unless the neutral release lever is pulled up. Ignition Switch The remote control box is equipped with a key type ignition switch.

  • Page 19: Emergency Stop Switch Lanyard

    Emergency Stop Switch Lanyard The emergency stop switch lanyard is provided to stop the engine immedi- ately in the event the operator should fall overboard or away from the con- trols. The emergency stop switch clip must be engaged with the emergency engine stop switch or the engine will not start.

  • Page 20: Choke/Fast Idle Lever

    3. CONTROLS (REMOTE CCDNTROL TYPE) Choke/Fast Idle Lever The choke/fast idle lever provides two functions: 1. Electric choke solenoid activation for easy engine start up. 2. Engine fast idle. The choke/fast idle lever will not move unless the remote control lever is in the N (neutral) position.

  • Page 21: Oil Pressure Indicator Light/Buzzer

    03 Pressure Indicator Light/Buzzer The green oil pressure indicator light turns OFF and the buzzer sounds when the oil level is low and/or the engine lubrication system is faulty. The engine speed slows down gradual- 3. CONTROLS (REMOTE Overheat Indicator Light/Buzzer The red overheat indicator light turns ON and the buzzer sounds when the engine cooling system is faulty.

  • Page 22: Power Trim/Tilt Switch (Remote Control Lever)

    The power him/tilt switch located on the remote control lever can be operated while the boat is under way or while stopped. using the power trim/tilt switch the operator can change the trim angle of the motor to achieve maximum boat acceleration, speed, stability and maintain optimum fuel consumption.

  • Page 23: Power Tilt Switch (Motor Pan)

    The power tilt switch located on the motor pan is a conveyance switch for tilting the motor for trailering, or pre- forming outboard maintenance. This power tilt switch should only be oper- ated with the boat being stopped and motor off. (REMOTE CONTROL Trim Meter TRIM METER The trim meter has a range of 0’...

  • Page 24: Manual Relief Valve

    LOCK position locks the motor in the desired position. Use the tilt lever to temporarily tilt the motor when the boat is operating in shallow water, or mooring in shallow water. The tilt lever must be in the LOCK position...

  • Page 25: Tilt Lock Lever

    Tilt Lock Lever Use the tilt lock lever to hold the motor in the highest tilt position when the boat is moored for a long time. Tilt the motor up as far as it will go then move the tilt lock lever into the lock position and gently lower the motor.

  • Page 26: Anode Metal

    3. CONTROLS & INSTRUMENTS Anode Metal The anodes are made from a sacrificial material which helps to protect the outboard motor from corrosion. (common) ANODi (stem bracket) 1 NoTlCq Painting or coating the anodes will lead to rust and corro- sion damage to the outboard motor.

  • Page 27: Water Intakes

    3. CONTROLS & INSTRUMENTS (ctimmon) Water Intakes WATiR INTAKES The engine cooling water is drawn into the water pump through these water intakes.

  • Page 28: Transom Angle Adjusting Rod

    After installation pull the transom angle adjusting rod out- ward to be sure it is locked in place. Start with the transom angle adjusting rod in the hole closest to the boat tran- (common) ANGLE TRANSOM TO CHANGE...

  • Page 29: Fuel Cap/Gauge/Vent Knob

    Fuel Cap/Gauge/Vent Knob VENT KNOB GAUGE FUEL FILLER CAP The fuel gauge is part of the fuel cap. The fuel cap vent knob controls air entering and leaving the fuel tank. When refilling the fuel tank, turn the vent knob counterclockwise to the open position and remove the fuel cap.

  • Page 30: Pre-Operation Checks

    4. PRE-OPERATION Engine Cover Removal/Installation (FRONT) ENGINE COVER To remove, release the front and rear engine cover latches and remove the engine cover. To install, position the engine cover over the engine and hook and lpck the front and rear latches. CHECKS (REAR)

  • Page 31: Engine Oil

    Engine Oil Engine oil is a major factor affecting engine performance and service life. Running the engine with insufficient oil can cause serious engine damage. Recommended oil Use high-detergent, premium quality Cstroke engine oil, certified to meet or exceed U.S. automobile manufac- tures’...

  • Page 32: Fuel Level

    OUT OF REACH OF CHILDREN. VENT KNOB FUEL CAP Refilling Remove the fuel tank from the boat for refilling. Turn the vent knob coun- terclockwise to the open position and remove the fuel cap. Refuel in a well-ventilated area. Fill the fuel tank up to the SAFE FILL level mark only.

  • Page 33: Gasoline Containing Alcohol

    Recommended fuel Your engine is designed to use any gasoline that has a pump octane num- ber ( v) of 86 or higher, or that has a research octane number of 91 or higher. Gasoline pumps at service sta- tion normally display the pump octane number.

  • Page 34: Propeller And Cotter Pin

    4. PRE-OPERATION Propeller and Cotter pin COTTi3.a PIN (stainless steel) Propeller Check the propeller blades for damage, wear or deformation and replace if necessary. Never operate the outboard motor with a damaged pro- peller. Carrying a spare propeller, propeller nuts, and cotter pins are common prac- tice.

  • Page 35: Remote Control Friction Adjustment

    Painting or coating the anodes will lead to rust and corro- sion damage to the outboard motor. The following materials should be kept with the boat: 1. Owner’s Manual. 2. Tool Kit. 3. Spare engine oil, spark plugs, pro- peller and propeller cotter pins.

  • Page 36: Starting The Engine

    FUEL HOSE CONNECTOR (FUEL TANK END) \ The fuel tank must be properly secured in the boat. This will protect the fuel tank from mechanical damage caused by the fuel tank shifting. The fuel tank must be in a well venti- lated area to reduce the chance of a gasoline vapor explosion.
  • Page 37 VENT KNOB 2. Turn the fuel cap vent knob at least 2 or 3 turns counterclockwise, to open the fuel tank vent. OUTLET END 3. Hold the primer bulb so that the outlet end is higher than the inlet end. The arrow on the primer bulb points upward.

  • Page 38: Starting The Engine (Tiller Handle Type)

    motor.
  • Page 39 5. STARTING THROTIiE GRIP 3. Align the engine start symbol ” QI ” on the throttle grip with the pointer ” F ” on the tiller handle. THE ENGINE 4. When the engine is cold or ambient temperature is low pull the choke knob.
  • Page 40 5. STARTING THE ENGINE (TILLER HANDLE TYPE) CHOltE K\NOB 6. If it was necessary to use the choke knob to start the engine, slowly return it to its initial position. Turn the throttle grip in the SLOW direction to a position where the engine does not stall.
  • Page 41 5. STARTING OIL PRESSURE ~IyIcATORLIyHT Bjfl &, - NORMAL: GREEN LIGHT ON ABNORMAL: GREEN LIGHT BLINKING OR OFF 8. With the engine running, check to see if the green engine oil pressure indicator light turns Stop the engine if the oil pressure indicator light does not mm ON.

  • Page 42: Starting The Engine (Remote Control Type)

    If the operator does not attach the emergency stop switch lanyard, and is thrown from his seaQ or out of the boat, the out-of-control boat can seri- ously injure the operator, pas- sengers, or bystanders.
  • Page 43 5. STARTING XIMUM FAST 3. When the engine is cold or the ambient temperature is low, lift and hold the choke/fast idle lever up fully. This will provide a rich fuel mixture and the correct fast idle. When the engine is warm, raise the free acceleration lever to the MAXIMUM FAST IDLE position and hold it in the position.
  • Page 44 5. STARTING THE ENGINE (REMOTE CONTROL TYPE) COOLING SYSTEM INDICATOR WATER INTAKE (each side) 6. After the engine starts, verify water is flowing through the cooling system by monitoring the cooling system indica- tor. The amount of water coming out of the cooling sys-, tern indicator will vary due to thermostat operation.

  • Page 45: Emergencv Starting

    Emergency Starting (FRONT) FIXINCLEVER If the electric starting system will not start the engine the engine can be started by using the pull starter rope from the tool kit. 1. Release the front and rear engine cover latches then remove the engine cover.
  • Page 46 5. STARTING THE ENGINE SHIF? LEVER (TILLER HANDLE TYPE) 3. Depending on what type of out- board motor you have, move the shift lever or the control lever to the N (neutral) position. (REMOTE CONTROL TYPE) ENGINE STOP SWITCH EMERGENCY STOP SWITCH SPARE EMERGEN STOP SWITCH...
  • Page 47 EMERGENCY sTOPswITCH CLIP' 5. If your outboard motor is a remote control type, turn the ignition key to the ON position. Engage the emer- gency stop switch clip, located*at one end of the emergency stop switch .lanyard, with the emergency engine stop switch.
  • Page 48 5. STARTING THE ENGINE {REMOTE CONTROL TYPE) If the fuel system is working properly, it should only be necessary to pull the engine 1 or 2 times with the choke knob out. ENGINE START,SYMBOL POIN-TER THROTTLE GRIP (TILLER HANDLE TYPE) 7.
  • Page 49 Lock the engine cover latches. Attach the emergency stop switch lanyard securely to the operator and return to the closest boat landing. Contact your closest authorized Honda Marine dealer and have the out- board motor and the electrical sys-...

  • Page 50: Troubcieshooting &Rting Problems

    5. STARTING THE ENGINE ‘Ikoubleshooting Starting Problems SYMPTOM POSSIBLE CAUSE Starter motor 1. Shift lever not in doesn’t turn neutral position. over. 2. Blown fuse. 3. Weak battery. 1. Emergency stop switch clip is not engaged. 2. Out of fuel Starter motor turns over but engine will not...

  • Page 51: Operation

    5 minutes at a time. For boats that plane easily, bring the boat up on plane then reduce the throttle opening to the specified break-in settings called out above. 6. OPERATION...

  • Page 52: Tiller Handle Type Gearshifting

    6. OPERATION (TILLER HANI9LE’ TYPE) FAST POIN’j-ER Gearshift lever has 3 positions: FORWARD, NEUTRAL, and REVERSE. An indicator at the base of the gearshift lever aligns with the letters F, N, and R on the motor pan. 1. Align the pointer on the tiller han- dle with the SLOW position on the throttle grip to decrease engine speed.

  • Page 53: Steering

    Move the handle to the left. handle to the right. The tiller handle is moved in the oppo- site direction in which you want the boat to turn. 6. OPERATION Cruising THROTkLE GRIP With the gearshift lever in the F (for-...

  • Page 54: Remote Control Type

    30 toward F (forward) or 30” toward R (reverse) to engage the desired gear. Moving the control lever further from 30” will increase throttle opening and boat speed. (neutral) 30” (reverse) The control lever will not move unless...

  • Page 55: Cruising

    2. Move the control lever from N (neutral) 30” toward F (forward) to engage the F (forward) gear. Moving the control lever further from 30” will increase the throttle opening and boat speed. 3. For optimum fuel economy, limit throttle opening to 2/3.

  • Page 56: Gas Assisted Tilt Type

    6. OPERATION (GAS ASSISTED TILT TYPE) Tilt Lever Tilt the motor up to prevent the pro- peller and gear case from hitting the bottom when beaching or stopping in shallow water. 1. Move the gearshift lever to the N ( neutral) position and stop the engine.
  • Page 57 3. With the outboard motor tilted up to the desired position, move the tilt lever to the LOCK position to lock the motor. 6. OPERATION (GAS ASSISTED 4. To lower the motor back down, move the tilt lever to the FREE position, while holding the engine cover grip, then lower the motor gently.
  • Page 58 TILTLOCK Use the tilt lock lever to hold the motor in the highest tilt position when the boat is moored for a long time. 1. Move the tilt lever to the FREE position (refer to page 55), then pull the engine cover grip and tilt the motor all the way up.

  • Page 59: Power Trim/Tilt Type

    Motor trim angle adjustment is necessary to compensate for boat load or weight distribution, water conditions, pro- peller or engine condition. The motor trim angle can be adjusted while...

  • Page 60: Trim Meter

    The trim meter indicates the trim angle of the motor. Refer to the trim meter, and press the UP or DN portion of the power trim/tilt switch to adjust, the motor trim angle to achieve boat performance and stability. BOW TOO LOW DUE TO I.

  • Page 61: Power Tilt Switch (Motor Pan)

    This power tilt switch should only be operated when the boat is stopped and the motor is off. 6. OPERATION Manual Relief Valve Do not turn this screw.

  • Page 62: Tilt Lock Lever

    6. OPERATION (POWER TRIM/TILT LEVER Tilt Lock Lever Use the tilt lock lever when the boat is moored. 1. Tilt the motor up as far as it will go using the power trim/tilt switch. 2. Move the tihlock lever to the...

  • Page 63: Trim Tab Adjustment

    Distribute the load evenly in the boat and run the boat in a straight course at full throttle. Slightly turn the steering wheel or tiller handle for both right and left turns to determine the amount of effort required.

  • Page 64: Motor Protection System

    6. OPERATION (MOTOR PROTECTIONSYSTEM) Engine Oil Pressure and Overheat Warning System If the engine oil pressure drops and/or the engine overheats, either or both warning systems could be activated. When activated the engine speed will decrease gradually and the green oil pressure indicator light will turn and’the red overheat indicator light will turn ON.
  • Page 65 This could cause the oil pressure warning system to activate momentarily. 3. If the oil pressure warning system stays activated after 30 seconds, return to the closest boat landing and contact your closest authorized Honda Marine dealer. 6. OPERATION (MOTOR...

  • Page 66: Over-Rev Limiter

    6. OPERATION (MOTOR PROTECTION Over-Rev Limiter This outboard motor is equipped with an engine over-rev limiter which acti- vates when the engine speed increases excessively. The over-rev limiter can be activated while cruising, tilting up the motor, or when ventilation occurs during a sharp turn.

  • Page 67: Anodes

    When the power trim warning system is activated: 1. Immediately decrease the trim angle by pressing the DN portion of the power trim/tilt switch. 2. Immediately reduce the throttle opening to SLOW and operate the engine at low speed. 6. OPERATION (MOTOR Anodes The anodes are a sacrificial material...

  • Page 68: Shallow Water Operation

    6. OPERATION Shallow Water Operation [NOTICE1Excessive trim/tilt angle during operation can cause the pro- peller to raise out of the water and cause propeller ventilation and engine over-revving. Excessive trim/tilt angle can also damage the water pump and overheat the engine.

  • Page 69: High Altitude Operation

    High Altitude Operation At high altitude, the standard carbure- tor air-fuel mixture will be excessively rich. Performance will decrease, and fuel consumption will increase. High altitude performance can be improved by installing a smaller diam- eter main fuel jet in the carburetor and readjusting the pilot screw.

  • Page 70: Stopping The Engine Tiller Handle Type

    7. STOPPING THE ENGINE (TILLER HANDLE TYPE) Emergency Engine Stop ENGINE STOP SWITCH EMERGENCY STOP SWITCH LANYARD SWITCH CLIP Disengage the emergency stop switch clip from the engine stop switch by pulling the emergency stop switch lan- yard. It is a idea to good stop the engine with...
  • Page 71 7. STOPPING THE ENGINE (TILLER HANDLE TYPE) ENGINE STOP SWITCH 2. Push the engine stop switch until the engine stops.

  • Page 72: Remote Control Type

    Normal Engine Stop N (neutral) 1. Move the control lever to the N (neutral) position and turn the igni- tion key to the OFF position. IGNITION KE 2. When the boat is not in use, remove and store the ignition key.

  • Page 73: Transporting

    Tkailering STEERING FRICTION When trailering or transporting the boat with the motor attached, it is recom- mended that the motor remain in the normal run position. Tighten the steering friction adjuster securely to stop the motor’s side to side movement.
  • Page 74 9. CLEANING AND FLUSHING WASH PLUG (flush plug) Thoroughly clean and flush the out- board motor with fresh water after operating in dirty or salty water. Flush Kit (optional part) 1. Wash the outside of the outboard motor with clean, fresh water. 2.

  • Page 75: Cleaning And Flushing

    CdOLINi; SYSTEM INDICATOR 7. Start the engine. Monitor the cool- ing system indicator. Stop the engine if water does not come out of the cooling system indicator and check the fresh water supply. If the fresh water supply is insufficient it may be necessary to temporarily cover the three water intakes with duct tape.

  • Page 76: 10. Maintenance

    10. MAINTENANCE Periodic maintenance and adjustment are important to keep the motor in the best operating condition. Service and inspect according to the MAINTENA- NCE SCHEDULE. Stop the engine before performing any maintenance. If it is necessary to run the engine make sure the area is well ventilated.

  • Page 77: Tool Kit And Spare Parts

    Tool Kit and Spare Parts The following tools and spare parts are supplied with the outboard motor for maintenance, adjustment, and emergency repairs. TOOL KIT 10 x 12 mm WRENCH > 8 mm WRENCH FLAT SCREWDRIVER PHILLIPS SCREWDRIVER SCREWDRIVER HANDLE OIL CHECK SCREWDRIVER 10.

  • Page 78: Maintenance Schedule

    10. MAINTENANCE MAINTENANCE SCHEDULE Use only genuine HONDA parts or their equivalent for maintenance or repair. Replacement parts which are not of equivalent quality may damage the motor.
  • Page 79 REGULAR SERVICE PERIOD (3) Perform at every indicated month or op,erating hour 1 intervals, whichever comes first. ITEM’ Fuel tank and filter Clean filter (Replace if necessary) Fuel filter Check Change Thermostat Check Fuel line Check (Replace if necessary) Battery fluid Check-refilling (if necessary) Cable connection Check-tightness Bolts and Nuts...

  • Page 80: Engine Oil

    10. MAINTENANCE Engine Oil Engine oil is a major factor affecting engine performance and service life. Oil check interval: Each use. Oil change interval: After the first 20 hours, then every 200 hours. (Refer to the mainte- nance schedule page 76). OIL CAPACITY: 2.1 US qt (2.0 lit)...When oil filter is not replaced...
  • Page 81 DRAINPLUG 2. Loosen the drain plug cover screw using a flat blade screwdriver and remove the drain plug cover. 3. Place the drain plug cover as shown to use it as an oil drain guide. Place a suitable container under the guide. 10.

  • Page 82: Gear Oil

    10. MAINTENANCE 7. Refill to the-upper level mark on the oil level dipstick with the recom- mended oil. NOTE: To avoid incorrect gauging of the engine oil level, inspect the oil level when the engine has cooled.. 8. Reinstall the oil filler cap. Always wash your hands after handling used oil.
  • Page 83 LEVEL PLUG DRAIN Gear Oil Level/Check 1. Position the outboard motor verti- cally. plug and see if oil Remove the level flows out. If no oil flows out, fill through the drain plug hole until the oil starts to flow out through the level plug hole.

  • Page 84: Spark Plugs

    10. MAINTENANCE Spark Plugs To ensure proper engine operation, the spark plugs must be properly gapped and free of deposits. Check-replace interval: After the first 20 hours, then every 200 hours. (Refer to the mainte- nance schedule page 76). plug: Recommended spark DR7EA (NGK),...

  • Page 85: Battery (Not Included)

    Check the battery cables to be sure they are securely connected to the bat- tery terminals. Tighten if necessary. If the battery terminals are corroded or if recharging is necessary, remove the battery from the boat to clean or recharge.
  • Page 86 Removal: 1. Disconnect the negative ( - > battery cable first, then disconnect the posi- tive (+) battery cable. 2. Remove the battery from the boat. battery terminals with a Clean the wire brush or sand paper. Clean the battery with a solution of baking soda...

  • Page 87: Lubrication

    Installation: 1. Return the battery to the boat. Install the battery in the correct size corrosion-resistant battery box. 2. Connect the positive (+) battery cable first, then connect the nega- tive (-) battery cable. Tighten the cable nuts securely. 3. Coat the battery terminals and cable ends with marine grease.

  • Page 88: Engine Fuel Filter

    10. MAINTENANCE Engine Fuel Filter ARBURETOR FUEL FILTER The engine fuel filter is located under the engine cover between the fuel cou- pling and the fuel pump. Water or sediment accumulated in the fuel filter can cause loss of power or hard start- ing.
  • Page 89 FUEL FILTER 3. Pull the spring retainer toward you, and raise the fuel filter. 4. Check the fud filter for water accu- mulation or sediment. If no water or sediment are found, reinstall the fuel filter properly. Change 1. Remove the fuel filter. Before removing the fuel filter, to prevent fuel leakage, place fuel hose clamps on the fuel hoses at each side of...

  • Page 90: Fuel Tank And Filter

    10. MAINTENANCE 4. Securely connect the fuel hose con- nector to the outboard motor page 5. Prime the engine using the primer bulb page 35. Check for fuel leaks. &pair any fuel leaks if necessary. If loss of power or hard starting are found to be caused by excessive water or sediment accumulation in the fuel filter, inspect the fuel tank.

  • Page 91: Fuse Replacement

    FUEL TANK HOSE CONNECTOR FUEL TANK FILTER Fuel Tank Filter Cleaning/Replacement 1. Turn the fuel tank hose connector counterclockwise to remove the fuel tank filter. 2. Clean the fuel tank filter with non- flammable cleaner or solvent. Replace the fuel tank filter if neces- sary.

  • Page 92: Propeller

    10. MAINTENANCE Propeller MARINE GREASE -asiih If the propeller is damaged, replace it as follows: Mainless) COTTER PIN CASTLE NUT PLAIN WASHER SPECIAL SPLINE WASHER PROPELLER THRUST W’hER Removal: Remove the c:otter pin then remove the mm castle nut, 17 mm plain washer, 10 mm special spline washer, propeller and thrust washer.

  • Page 93: Submerged Motor

    Submerged Motor A submerged motor must be serviced immediately after it is recovered from the water in order to minimize corro- sion. Immediately take the outboard motor to the closest authorized Honda Marine dealer or if you are far from a dealership, proceed as follows: 1.
  • Page 94 10. MAINTENANCE 5. Change the engine oil (refer to page 78). 6. Put a teaspoon of engine oil into each spark plug hole, then rotate the engine using the pull starter rope several times to lubricate the inside of the cylinders. Reinstall the spark plugs.

  • Page 95: 11. Storage

    For longer service life of the outboard motor, have your outboard motor ser- viced by an authorized Honda Marine dealer before storage. If you are unable to take the motor to your dealer, proceed as follows: Draining the Carburetors Gasoline is extremely flammable, and gaso-...
  • Page 96 11. STORAGE Outboard Motor Position Transport and store the motor either vertically or horizontally, as shown above. Store the outboard motor in a well-ventilated area free from direct sunlight and humidity. Vertical transport or storage: Attach the stem bracket to stand. CASE PROTECTORS Horizontal transport or storage: Rest the motor on the case protectors.

  • Page 97: 12. Troubleshooting

    (1) Engine does not start. Fuel Fuel is not fed to carburetor. Electrical Insufficient - Sparks across sparks sparlcplug gap Normal - spark No sparks - There is no gasoline across spark in fuel tank. Vent knob is not open or plug gap vent clogged.
  • Page 98 12. TROUBLESHOOTING (2) Engine starts but immediately stops. Engine some times stops while cruising. Fuel . No gasoline in fuel tank. There is gasoline - in fuel tank. Engine overheats . Normal sparking Water is mixed with gasoline. Vent knob is not open or vent is clogged.

  • Page 99: 13. Specifications

    13. SPECIFICATIONS Electric starter Starter system Ignition system C.D.1 Lubrication system Trochoid pump pressure lubrication Specified oil Engine: API standard (SG SF/CC CD) SAE low-30 Gear case: API standard (GL-4/S) SAE 90 outboard motor gear oil Oil capacity Engine: 2.5 US qt (2.4 lit.) Gear case: 0.53 US qt (0.5 lit.) D.C.
  • Page 100 13. SPECIFICATIONS API standard SG SF/CC CD...

  • Page 101: Warranty Service

    Honda Power Equipment Customer Service Office, You can write to: American Honda Motor Co., Inc. Honda Power Equipment Division Customer Service Office 4475 River Green Parkway Duluth, GA 30136-2565 Or telephone: (404) 497-6400...
  • Page 102 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 103: 15. Wiring Diagram

    15. WIRING DIAGRAM TILLER HANDLE TYPE “-pW “ml - r*rra...
  • Page 104 15. WIRING DIAGRAM REMOTE CONTROL TYPE s- !-...
  • Page 105 15. WIRING DIAGRAM .-.. -- REMOTE CONTROL, POWER TRIM/TILT TYPE XRTA type outboard L------------A...

  • Page 106: 16. Index

    Anode metal ... 24 Pre-operation check ... 33 Motor protection system..65 Battery (not included) ... 83 Break-in procedure..49 Choke knob ... 11 Choke/fast idle lever ... 18 Cleaning and flushing ... 72 Component identification ... 8 Controls &...

  • Page 107: Tilting Motor Gas Assisted Tilt Type

    16. INDEX Oil pressure indicator light ... 14. Oil pressure indicator light/buzzer ... 19 Other checks ... 33 Over-rev limiter ... 64. Overheat indicator light ... 14. Overheat indicator light/buzzer ... 19 Power tilt switch (motor pan) Controls ... 21 Operation ...
  • Page 108 16. INDEX Trim tab adjustment ... 61 Troubleshooting ... 95 Starting problems ... 48 Warranty service ... 99 Water intakes ... 25 Wiring diagram ... 100...
  • Page 109 MEMO...
  • Page 110 MEMO...
  • Page 111 MEMO...
  • Page 113 HONDA mmwnr- @ 1993 American Honda Motor Co., inc. - All Rights I I I I I I I I I I <SUPPLEMENT>- Reeerved BF35A145A Owner's Manual 1 I 1 I I 1 1 I...
  • Page 115 Thank you for purchasing a Honda Outboard Motor. This owner’s manual supplement covers specific information about the Honda BF45AM LHTA type out- board motor. Refer to the BF35A/45A owner’s manual for all other information. The owner’s manual and this supple- ment contain information on how to operate your new outboard motor safely.
  • Page 116 TYPES OF HONDA BF35A/45A OUTBOARD MOTORS It may be necessary to refix to this chart for reference purposes when reading this manual. Model Shaft Length Short I-m2 BF35 BF45 S: Short Shaft L: Long Shaft The gas assisted tilt type motors use a gas damper to assist when manually tilting the motor. The power trim/tilt type motors use an electric/hydraulic power cylinder to trim or tilt the motor.
  • Page 117 2. COMPONENT IDENTIFICATION ... 3. CONTROLS Tiller handle 8z power trim/tilt type Ignition switch ... Emergency engine stop switch..Power trim/tilt switch (optional part)..Power tilt switch (motor pan)..Trimmeter ... Tachometer..Manual relief valve..4.

  • Page 118: Component Identification

    2. COMPONENT IDENTIFICATION (LHTA) POWER TILT SWITCH BUZZER...

  • Page 119: Controls

    Ignition Switch IGNITIO SWITCH The LHTA type is equipped with a key type ignition switch which can be mounted in the optional instru- ment housing. Key positions: START To activate the starter motor and start the engine the shift lever must he in the neutral position.

  • Page 120: Power Trim/Tilt Switch (Optional Part)

    0" to 20” to maintain proper boat trim. The power trim/tilt switch can be op- erated while the boat is under way or while stopped. By using the power trim/tilt switch the operator can change the trim angle of the mo-...

  • Page 121: Power Tilt Switch (Motor Pan)

    The power tilt switch located on the motor pan is a convenience switch for tilting the motor for trailering, or performing outboard maintenance. This power tilt switch should only be operated with the boat stopped and motor off. Trim Meter TRIMMETER TACHOMETER The trim meter has a range of 0”...

  • Page 122: Manual Relief Valve

    3. CONTROLS (LHTA) Manual Relief Valve If the power trim/tilt switch will not tilt the outboard motor, the motor can be manually tilted up or down by opening the manual relief valve. To tilt the outboard motor manually, turn the manual valve under the left stem bracket no more than 1 or 2 tums counterclockwise using a screw driver.

  • Page 123: Pre-Operation Checks

    Steering Friction Adjustment TO DECREASE STEERING Operate the tiller handle right and left and check for the amount of drag felt. Tighten the adjuster until the steer- ing operates comfortably and safely. Check the steering friction adjust- ment with the motor trimmed in all trim angle positions.

  • Page 124: Starting The Engine

    This can dam- age the starter motor and flywheel. Emergency Starting The steps for emergency starting the BF45A LHTA are also the same ex- cept step 5. 5. ‘lbm the ignition key to the ON position. Engage the emergency...

  • Page 125: Operation

    1. Reduce the trim angle to less than 20” if possible. 2. Reduce the throttle opening to SLOW and operate the boat at a slow speed. 6. OPERATION (LHTA) Shallow Water Operation When operating in shallow water,...

  • Page 126: Stopping The Engine

    7. STOPPING THE ENGINE (LHTA) Normal Engine Stop IGNRION KEY The steps for stopping the BF45A LHTA are the same except step 2. The new information for step 2 is ShOWn. 2. Turn the ignition key to the OFF position. When the ?&at is not in use, remove and store the ignition key.

  • Page 127: Maintenance

    Auxiliary Fuse Replacement I P4 1 BLOWN FUSE AUXILIARY FUSE RATING: 10A If the auxiliary fuse is blown, the electric starter will not work but the power trim will work. If the main fuse is blown, neither the starter or the power trim will work. ‘Ihe main fuse is located on the sole- noid bracket inside the engine cover.

  • Page 128: Wiring Diagram

    15. WIRING DIAGRAM (LHTA)

  • Page 129: Optionalparts

    17. OPTIONAL PARTS (LHTA) POWER TRIM/TILT SWITCHES Foot ‘Qpe Extended Tiller Handle ‘I)pe Foot Hamess Extended Tiller Handle Harness...
  • Page 130 17. OPTIONAL PARTS (LHTA) INSTRUMENT HOUSING There axe additional optional parts available. See your authorized Honda Marine dealer for a complete list.
  • Page 132 31 ZV36OS 00X31 -ZV3-6SO0 2509304 PRINTED IN U.S.A.

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