Honda Outboard Motor BF75A Owner's Manual
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Honda Outboard Motor BF75A Owner's Manual

Honda Outboard Motor BF75A Owner's Manual

Honda power equipment outboard motors owner's manual
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Summary of Contents for Honda Outboard Motor BF75A

  • Page 2 The engine exhaust from this product contains chemicals known to the State of California to cause cancer, birth defects or other reproductive harm.
  • Page 3 Thank you for purchasing a Honda Outboard Motor. This manual describes the operation and maintenance of the Honda BF 75A and BF 90A 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 BF75A/90A OUTBOARD MOTORS It may bc necessary to refer to this chart for reference TYPE CODE (example) T=Power Trim /Tilt purposes when reading this manual. Remote Control R=Remote Control H=Tiller Handle Power Trim/ Tachometer Trimmeter Tilt X=Extra Long Shaft L=Long Shaft...
  • Page 5 LEFT STERN BRACKET PRODUdT IDENTIFICATION NUMBER The Product Identification Number is. stamped on a plate and attached to the left stern bracket. Product identification number: IDENTIFICATION ENGINE SERIAL NUMBER The Engine Serial Number is stamped on the cylinder block in the front of the engine.

  • Page 6: Table Of Contents

    CONTENTS I. SAFETY SAFETY LABELS SAFETY INFORMATION.. 2. COMPONENT IDENTIFICATION ... 3. CONTROLS & INSTRUMENTS TILLER HANDLE TYPE Ignition Switch ... Gear Shift Lever ... Choke Knob..Throttle Grip..Throttle Opening Indicator..15 Throttle Friction Knob ... Engine Stop Switch ...
  • Page 7 STARTING THE ENGINE (TILLER HANDLE TYPE) ..STARTING THE ENGINE (REMOTE CONTROL TYPE) .a. (SIDE-MOUNT TYPE) ..(PANEL-MOUNT TYPE) ..(TOP-MOUNT TYPE) ... . STARTING THE ENGINE (EMERGENCY STARTING).

  • Page 8: Safety

    1. SAFETY SAFETY LABELS These labels are in the locations shown. They warn you of potential hazards that could seriously injure you. Read these labels carefully.

  • Page 9: Safety Information

    Stop the engine immediately if any one falls overboard. Do not run the engine while the boat is near anyone in the water. Attach the emergency stop switch lanyard securely to the operator. Do not remove the engine cover while the engine is running.
  • Page 10 2. COMPONENT IDENTIFICATION THROTTLE GRIP ANGLE ADJUSTING ANODE METAL (TILLER IHANDLE TYPE) OIL LEVEL ENGINE COVER DIPSTICK ENGINE DRAIN BOLT ANTI-VENTILATION ACCESS COV REAR VENT PLUG LNODE METAL ODE METAL EXHAUST PORT FILLER CHOKE CONNECTOR IGNITION INSPECTION C‘EAR OIL DRAIN KNOB THROTTLE FRICTION...
  • Page 11 2. COMPONENT OIL PRESSURE INDICATOR SPARE EMERGENCY STOP SWITCH CLIP OVERHEAT ;mIDI$TOR IGNIiION SWITCH IDENTIFICATION LIGHT EMERGENCY STOP SWITCH EMERGENCY ;a?; SWITCH (TILLER HANDLE TYPE) THROTTLE FRICTION GEAIi SHIFT ;gyT%RHTRIMfTILT LEVER KNOB...
  • Page 12 2. COMPONENT IDENTIFICATION POWER TILT SWITCH (REMOTE CONTROL TYPE) ENGINE COVER COOLING ENGINE ENGINE DRAIN BOLT ACCESS COVER ANODE METAL ANODE METAL EEUST TRIM TA/B OIL LEVEL DIPSTICK GEAR OIL DRAIN CHOKE KNOB FUEL HOSE CONNECTOR EAR VENT PLUG LEVEL INSPECTION PLUG BOLT...

  • Page 13: Component Identification

    2. COMPONENT (SIDE-MOUNT REMOTE CONTROL) ;$yT:RHTRIM/TILT SPARE EMERGENCY STOP SWITCH CLIP BUZZER (INSIDE) REMOTE CONTROL ’ FRICTION ADJUSTER EMERGENCY STOP SWITCH LANYARD EMERGENCY SWITCH IDENTIFICATION NEUTRAL RELEAE LEVER OIL PRESSURE INDICATOR LIGHT OVERHEAT INDICATOR LIGHT IDLE EMERGENCY STOP SWITCH / STOP SWITCH STOP CLIP (REMOTE CONTROL TYPE)
  • Page 14 2. COMPONENT IDENTIFICATION (SINGLE TOP-MOUNI REMOTE CONTROL) ~~~T~HTRIM/TILT \/-----l THRO’Ill BU’ITON CONTROL (for PANEL/TOP- MOUNT SWITCH (REMOTE CONTROL TYPE) (DUAL REMOTE POWER TRIM/TILT SWITCH (SIMULTANEOUS PANEL type) TOP-MOUNT CONTROL) CONTROL POWER TRIM/TILT SWITCH (RIGHT ADJUSTMENT) ’ POWER TRIMmILT SWITCH OIL PRESSURE INDICATOR LIGHT OVERHEAT...
  • Page 15 FUEL TANK (optional equipment) FUEL (option FUEL PRIMER PRIMER BULB BULB 2. COMPONENT VENT KNOB FUEL G>AUGE F&L L HOSE HOSE CONNECTOR CONNECTOR (female) IDENTIFICATION (COMMON) METER TRIM METER TACHOMETER (optional equipment)

  • Page 16: Controls & Instruments Tiller Handle Type

    N (neutral) position. Gear Shift Lever GEAR SHIFT 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. Choke Knob CHOKE...

  • Page 17: Throttle Grip

    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. 3. CONTROLS Throttle Opening Indicator THROTTLE OPENING INDICATOR The curve on the grip label indicates throttle opening.

  • Page 18: Engine Stop Switch

    3. CONTROLS (TILLER HANDLE TYPE) 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. Emergency Stop Switch Lanyard STOF EMERGENCY STOP SWITCH...

  • Page 19: Oil Pressure Indicator Light

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

  • Page 20: Power Trim/Tilt Switch

    0” to 20” to maintain proper boat trim. The power trim/tilt switch located on the tiller handle can be operated while the boat is under way or while stopped. By using the power trim/tilt switch...

  • Page 21: (Side-Mount Type) Remote Control Lever

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

  • Page 22: 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. remote control lever will not engage forward or reverse gear, unless the neutral release lever is pulled up. Switch Ignition START...

  • Page 23: 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 falls overboard or away from the controls. The emergency stop switch clip must be engaged with the emergency stop switch, or the engine will not start.

  • Page 24: Choke/Fast Idele Lever

    3. CONTROLS (REMOTE CONTROL TYPE) Choke/Fast Idle Lever (neutral) f-’ /((=j 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 25: Oil Prcssurc Indicator Light/Buzzer

    Oil 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 CONTROL TYPE) Overheat Indicator Light/Buzzer The red overheat indicator light turns ON and the buzzer sounds when there...

  • Page 26: Power Trim/Tilt Switch

    The power trim/tilt switch located on the remote control lever can be operated 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 motor to achieve maximum boat acceleration, speed, stability and maintain optimum fuel consumption.

  • Page 27: (Panel-Mount Type)

    35” from the N position) will engage the forward gear. Moving the lever farther into the F position will increse the throttle opening and the boat’s for- ward speed. N (neutral): The engine idles and the transmis- sion gears are disengaged.

  • Page 28: Ncrtral 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 START...

  • Page 29: Emergency Stop Switch Lnayard

    Emergency Stop Switch Lanyard EMERGENCY STOP SWITCH The emergency stop switch lanyard is provided to stop the engine immedi- ately in the event the operetor falls overboard or away from the controls. The emergency stop switch clip must be engaged with the emergency stop switch, or the engine will not start.

  • Page 30: Throttle Button

    3. CONTROLS (REMOTE CONTROL TYPE) Throttle Button l ..*q;,:ckword (NC&l) ,’ NEUTRAL RELEASE LEVER THROTTLE BUTTON By moving the control lever forward or backward when the throttle button is pushed in, the throttle opening will be increased without engaging the gears. It is necessary to position the control lever in N (neutral) to push in the throttle button.

  • Page 31: Oil Pressure Indicator Light/Buzzer

    Oil 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 CONTROL TYPE) Overheat Indicator Light/Buzzer The red overheat indicator light turns ON and the buzzer sounds’when there...

  • Page 32: Power Trim/Tilt Switch

    The power trim/tilt switch located on the remote control lever can be operated while the boat is under way or while stopped. By using the power trim/tilt switch, the operator can change the trim angle of...

  • Page 33: (Top-Mount Type)

    OPENING CONTROL LEVER R (reverse): Moving the lever to the position (approximately 35” from the N position) will engage the reverse gear. Moving the lever farther into the R position will increase the throttle opening and the boat’s reverse speed.

  • Page 34: Ignition Switch

    3. CONTROLS (REMOTE CONTROL TYPE) Ignition Switch The switch panel is equipped with a key-type ignition switch. Key positions: START activate the starter motor and start the engine (the remote control lever must be in neutral position). To run the engine after starting (the battery will discharge if the key is left in this position with the engine not running).

  • Page 35: Emergency Stop Switch Lanyard

    Emergency Stop Switch Lanyard EMERGENCY STOP SWITCH EMERGENCY STOP /----- SWITCH CLIP The emergency stop switch lanyard is provided to stop the engine knnedi- ately in the event the operator falls overboard or away from the controls. The emergency stop switch clip must be engaged with the emergency stop switch, or the engine will not start.

  • Page 36: Throttle Button

    3. CONTROLS (REMOTE CONTROL TYPE) Throttle Button N (neutral) Backward BUTTON By moving the control lever forward or backward when the throttle button is pushed in, the throttle opening will be increased without engaging the gears. It is necessary to position the control lever in N (neutral) to push in the throttle button.

  • Page 37: Oil Pressure Indicator Light/Buzzer

    Oil 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 CONTROL TYPE) Overheat Indicator Light/Buzzer The red overheat indicator light turns ON and the buzzer sounds when there...

  • Page 38: Power Trim/Tilt Switch

    0” to 20” to main- tain proper boat trim. The power trim/tilt switch located on the remote control lever can be operated while the boat is under way or while stopped. using the power tri&tilt switch, the operator can change the trim angle of...

  • Page 39: Power Tilt Switch (Engine Pan)

    The power tilt switch located on the engine pan is for tilting the motor for trailering, or performing outboard maintenance. This power tilt switch should only be operated.with the boat stopped and engine off. This switch can operate even when the ignition switch is OFF.

  • Page 40: Manual Relief Valve

    3. CONTROLS (COMMON) 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 turns counterclockwise using a screw driver.

  • Page 41: 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 42: Anode Metal

    3. CONTROLS (COMMON) Anode Metal (steren bracket) The anodes are made from a sacrificial material which helps to protect the outboard motor from corrosion. Painting or coating the anodes will lead to rust and corrosion damage to the outboard motor. Cooling System Indicator...

  • Page 43: Transom Angle Adjusting Rod

    LOCKED $0 LOCK Start with the transom angle adjusting rod in the hole closest to the boat tran- som, lower the motor and operate the boat at full speed. If the bow is exces- sively low stop the boat. Tilt the motor...

  • Page 44: Fuel Cap/Gauge/Vent Knob (Optional Fuel Tank)

    Anytime the fuel tank is in the boat with the vent knob closed, discon- nect the fuel hose connector from the outboard motor(refer to page 53).

  • Page 45: Engine Cover Lock Lever

    Engine Cover Lock Levers FRONT FREE LOCK LEVER The engine cover look levers are used to fasten the engine cover. To open and remove the engine cover, turn the front and rear lock levers counterclockwise to the FREE position. To fasten the engine cover, set the engine cover in position and turn the lock levers to the LOCK position.

  • Page 46: Engine Cover Rcmovavinstallation

    4. PRE-OPERATION CHECK§ Engine Cover Removal/Installation (FRONT) FREE ENGINE To remove, turn the front and rear engine cover lock levers to the FREE position and remove the engine cover. (REAR) COVER LOCK LEVER To install, position the engine cover over the engine and turn the front and rear lock levers to the LOCK position.

  • Page 47: Pre-Operation Checks

    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:SAE low-30 or low-40 Use 4-stroke motor oil that meets or exceeds the requirements for API service classification SG or SH.

  • Page 48: Fuel Level (Optional Fuel Tank)

    Wipe up spills immediately. VENT KNOB Refilling is highly Remove the fuel tank from the boat for refilling. Turn the vent knob coun- terclockwise to the open position and fuel. remove the fuel cap. Refuel in a well-ventilated area. Fill the fuel tank up to the SAFE FILL level mark only.

  • Page 49: Fuel Recommendations

    Fuel Recommendations Use unleaded gasoline with a pump octane rating of 86 or higher. This engine is designed to operate on unleaded gasoline. Unleaded gasoline produces fewer engine and spark plug deposits and extends exhaust system life. Never use stale or contaminated gasoline or an oil/gaso- line mixture.

  • Page 50: Oxygenated Fuels

    4. PRE-OPERATION CHECIKS Oxygenated Fuels Some conventional gasolines are being blended with alco- hol or an ether compound. These gasolines are collec- tively referred to as oxygenated fuels. To meet clean air standards, some areas of the United States and Canada use oxygenated fuels to help reduce emissions.

  • Page 51: Propeller And Tab Washer

    The propeller must be selected properly in order that the maximum engine speed can be adjusted in the recommended range between 5,000 rpm and 6,000 rpm for your boat. Using the improper propeller might cause outboard motor damage. The proper propeller will assure powerful...

  • Page 52: Steering Friction Adjustment (Tiller Handle Type)

    4. PRE-OPERATION Steering Friction Adjustment (Tiller handle Type) STEERING _. _..~ ~~ FRICTION INCREASE ADJUSTER FRICTION Operate the tiller handle right and left to check the tightness. Adjust the steering friction ajduster so that a slight amount of drag is felt. The steering sholud move smoothly and freely.

  • Page 53: Engine Cover Lock Lever Adjustment

    Engine Cover Lock Lever Adjustment If the engine cover becomes loose, it will shake and become noisy, and it may allow water to enter. Inspect the engine cover fastening condition and adjust if necessary. Inspection 1. Install the engine cover and fasten with the front and rear lock levers turned to LOCK position.

  • Page 54: Other Checks

    Painting or coating the anodes will lead to rust and corro- sion damage to the outboard The following materials should be kept with the boat: I. Owner’s Manual. 2. Tool Kit. 3. Spare emergency stop switch clip, engine oil, spark plugs, pro- peller, propeller nut and tab washer.

  • Page 55: Starting The Engine

    Optional Fuel Tank VENT KNOB The fuel tank must be properly se- cured in the boat. This-wiil protect the fuel tank from mechanical dam- age 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 56 5. STARTING THE ENGINE FUEL HOSE CONNECTOR 2. Connect the fuel hose connector to the outboard motor. Install the outboard end fuel hose connector with the clip toward the outside. Be sure the fuel hose connector is securely snapped in place. If the outboard end fuel hose connec- tor is forcibly installed in the rever-...

  • Page 57: Starting The Engine (Tiller Handle Type)

    5. STARTING THE ENGINE (TILLER HANDLE TYPE) Shift Lever GEAR SHIFT 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.
  • Page 58 If the operator does not attach the emergency stop switch lanyard, and is thrown from his seat or out of the boat, boat can seri- the out-of-control ously injure the operator, pas- sengers, or bystanders. Always properly...
  • Page 59 ENGINE POiNTER THROTTLE GRIP 3. Align the engine start symbol ” 01 ” on the throttle grip with the pointer ” ) ” on the tiller handle. 5. STARTING THE ENGINE (TILLER HANDLE TYPE) CH’OKE KNOB 4. When the engine is cold or ambient temperature is low pull the choke knob.

  • Page 60: Starting The Engine

    5. STARTING THE ENGINE (TILLER HANDLE TYPE) CHOKb KNOB 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 61 OIL PRESSURE INDICATOR LIGHT NORMAL: GREEN LIGHT ABNORMAL: GREEN LIGHT BLINKING OR OFF 8. With the engine running, check to see if the green engine oil pressure indicator light turns ON. Stop the engine if the oil pressure indicator light does not turn ON. the engine oil level (see page Check 45).
  • Page 62 IF the oDerator does not attach tha emeigency stop- switch lanyard, and is thrown from his seat or out of the boat, the out-of-control boat can seri- ously injure the operator, pas- sengers, or bystanders. Always...
  • Page 63 5. STARTING THE ENGINE (REMOTE CONTROL TYPE) FAST CHOKdFAST IDLE LEVER 3. When the engine is cold or the ambient temperature is low, lift the choke/fast idle lever up fully. This will provide a rich fuel mixture. When the engine is warm, it may be necessary to raise the choke/fast idle lever slightly.
  • Page 64 5. STARTING THE ENGINE WATER INTAKE 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- tem indicator will vary due to thermostat operation. Stop the engine if water does not come out of the cooling sys- tem indicator or if you see steam.

  • Page 65: (Panel-Mount Type)

    If the oDerator does not attach the emeigency stop switch lanyard, and is thrown from his seat or out of the boat, the out-of-control boat can seri- ously injure the operator, pas- sengers, or bystanders. Always...
  • Page 66 5. STARTING THE ENGINE (REMOTE CONTIROL TYPE) (neutral) CONTROL LEVER 3. Move the control lever forward or backward pushing the throttle button to open the throttle slightly. 4. When the engine is cold or the ambient temperature is low, put on the choke switch.
  • Page 67 5. STARTING THE ENGINE (REMOTE CONTROL TYPE) COOLING SYSTEM INDICATOR WATER INTAKE (each side) 7. 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- tem indicator will vary due to thermostat operation.

  • Page 68: (Top-Mount Type)

    EmmEl If the oDerator does not attach the emeigency stop switch lanyard, and is thrown from his seat out of the boat, the out-of-control boat can seri- ously injure the operator, pas- sengers, or bystanders. Always propely...
  • Page 69 5. STARTING THE ENGINE (REMOTE CONTROL TYPE) (neutral) THROTTLE BUTTON 3. Move the control lever(s) forward or backward pushing the throttle button to open the throttle slightly. 4. When the engine is cold or the ambient temperature is low, use the choke switch to provide a rich fuel mixture.
  • Page 70 5. STARTING THE ENGINE (REMOTE CONTROL TYPE) COOLING SYSTEM rNDICAToR WATER INTAKE (each side) 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- tem indicator will vary due to thermostat operation.

  • Page 71: Emergency Starting

    Emergency Starting ENGINE COVER LOCK LEVER If the electric starting system will not start the engine the engine can be started by using the emergency starter rope from the tool kit. engine cover 1. Turn the front and rear lock levers to the FREE position, then remove the engine cover.
  • Page 72 5. STARTING THE ENGINE (EMERGENCY (TILLER HANDLE TYPE) (neutral) (REMOTE CONTROL TYPE) SIDE-MOUNT (neutral) 3. Depending on what type of out- board motor you have, move the shift lever or the control lever to the N (neutral) position. STARTING) PANEL-MOUNT (neutral) TOP-MOUN’I (neutral)
  • Page 73 SIDE-MOUNT TYPE ‘\ IGNITIOEKEY >c CLIP EMERGENCY STOP SWITCH LANYARD If your outboard motor is a remote control type, engage the emergency stop switch clip (located at one end of the emergency stop switch lanyard) with the emergency stop switch. Turn the ignition switch key to the ON position.
  • Page 74 5. STARTING THE ENGINE (EMERGENCY (TILLER HANDLE TYPE) SYMBOL ENGINE Sl’ART POIN-TER THROTTLE GRIP 7. On the tiller handle type, align the engine start symbol “ QI” on the throttle grip with the pointer “b” on the tiller handle. On the side-mount remote control type, life the choke/fast idle lever.
  • Page 75 Lock the engine cover latches. Attach the emergency stop switch lan- yard securely to the operator, and return to the closest boat landing. Contact your closest authorized Honda Marine dealer, and have the outboard motor and the electrical system checked.

  • Page 76: Troubleshooting Starting Problems

    5. STARTING THE ENGINIE ‘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. Starter motor Out of fuel turns over but engine will not start.

  • Page 77: Operation

    Run the engine at trolling speed. Use the minimum amount of throttle opening necessary to operate the boat at a safe trolling speed. Next 45 minutes: Run the engine up to a maximum of 2,000 to 3,000 rpm or 10% to 30% throttle opening.

  • Page 78: Tiller Handle Type

    Steering LEFT TURN RIGHT TURN Move the tiller Move the tiller handle to the right. handle to the left. The tiller handle is moved in the oppo- site direction in which you want the boat to turn.

  • Page 79: Cruising

    Slow down to keep the propeller in the water. (TILLER HANDLE TYPE) FRICTION boat by returning the throttle to the slow speed side. 3. To set the throttle at a steady speed, turn the throttle friction knob clock- wise. To decrease friction for manual speed control, turn the friction knob counterclockwise.

  • Page 80: Remote Control Type

    30” toward F (forward) or toward R (reverse) to engage the desired gear. (nektral) OPENING Moving the control lever farther forward or backward than 30” will increase throttle opening and boat speed. (neritr al) (reverse) The control lever will not move unless...

  • Page 81: Cruising

    (forward) PXIMUM OPENING Moving the control lever father than 30” will increase the throttle opening and boat speed. 3. For optimum fuel economy, limit throttle opening to 80%. When cruising at high throttle under rough water condition or large waves,...

  • Page 82: (Panel-Mount Type)

    R (reverse) to engage the desired gear. (neutral) MAXIMUM OPENING Moving the control lever farther forward or backward than 35” will increase throttle opening and boat speed. (neutral) The control lever will not move unless the neutral release lever is pulled up.

  • Page 83: Cruising

    (forward) MAXIMUM OPENING Moving the control lever farther than 35” will increase the throttle opening and boat speed. 3. For optimum fuel economy, limit throttle opening to 80%. When cruising at high throttle under rough water condition or large waves,...

  • Page 84: (Top-Mount Type)

    35” toward F (forward) or toward R (reverse) to engage the desired gear. (neutral) MQving the control lever farther forward or backward than 35” will increase throttle opening and boat speed. (nertral) The control lever will not move unless the neutral release lever is pulled up.

  • Page 85: Cruising

    SWITCH TRIM/TILT SWITCH LOWEST POSITION If your boat is dual outboard motor type, adjust the trim angle of the right and left motors to be equal using the switches on the control box, as necessary. 2. Move the control lever approximately 35”...

  • Page 86: Power Trim/Tilt

    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...

  • Page 87: Power Trim/Tilt

    Excessive trim/tilt angle during operation can cause the propeller 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. To trim motor up slightly, press the UP portion momentarily.

  • Page 88: 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 good boat performance and stability. BOW TOO LOW DUE TO 1.

  • Page 89: Power Tilt Switch (Engine Pan)

    This power tilt switch should only be operated when the boat is stopped and the engine is off. 6. OPERATION (POWER TRIM/TILT) Manual...

  • Page 90: Tilt Lock Lever

    6. OPERATION (POWER TRIM/TILT) 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 tilt lock lever to the...

  • Page 91: 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 92: Engine Oil Pressure And Overheat Warning System

    6. OPERATION (MOTOR PROTECTION Engine Oil Pressure and Overheat If the engine oil pressure drops and/or the engine overheats, either both warning systems could be activated. When activated, the engine speed will decrease gradually, the green oil pressure indicator light will turn OFF, and the red overheat indicator light will turn continuous buzzer...
  • Page 93 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 PROTECTION SYSTEM)

  • Page 94: 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 95: Shallow Water Operation

    Water Operation Shallow piEiiq Excessive trim/tilt angle during operation can cause the propeller 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. When operating in shallow water, tilt the motor up to prevent the propeller and gear case from hitting the bottom With the motor tilted up, operate the...

  • Page 96: High Altitude Operation

    6. OPERATION High Altitude Operation At high altitude, the standard carburetor air-fuel mixture will be IOO rich. Performance will decrease, and fuel con- sumption will increase. A very rich mixture will also foul the spark plugs and cause hard starting. High altitude performance can be improved by specific modifications to the Farburetors.

  • Page 97: Stopping The Engine Tiller Handle Type

    1. Turn the throttle grip to SLOW position, and move the gearshift lever to N (neutral). IGNITION SWITCH 2. Turn the ignition switch to the OFF position. 3. When the boat is not in use, remove and store the ignition switch key.

  • Page 98: (Side-Mount Type)

    Engine Stop Normal IY heutral) 1 .‘Move the control lever to the N (neutral) position, and turn the ignition key the OFF position. IGNITION 2. When the boat is not in use, remove and store the ignition keys.

  • Page 99: (Panel-Mount Type)

    7. STOPPING THE ENGINE (REMOTE CONTROL TYPE) Normal Engine Stop N(neutra1) STOP 1. Move the control lever to the N (neutral) position, and turn the ignition key to the OFF position 2. When the boat is not in use, remove and store the ignition key.

  • Page 100: Top-Mount Type)

    TOP-MOUNT Move both control levers simulteneously to the N (neutral) position, and turn each ignition key to the OFF position one by one. 2. When the boat is not in use, remove TYPE) and store the ignition switch key(s). TYPE)

  • Page 101: Transporting

    If there is insufficient road clearance with the motor in the normal run position, then trailer the motor in the tilted position using a motor support bar (refer to your motor support bar manufacrurer’s instructions) or remove the motor from the boat.
  • Page 102 8. TRANSPORTING Transporting on a vehicle When transporting the outboard motor on a vehicle, perform following. I. Remove the engine cover(see page 69) BOLTS HOOKS TIMING BELT COVER 2. Remove the four tightening bolts and the three hooks, then remove the timing belt cover.
  • Page 103 HOIST HOOK LIFTING 4. Hook the hoist hook to the lifting- eye, and lift the motor from the boat. MOTOR STAND 5. Place the motor on an outboard motor stand and secure with bolts and nuts. 6. Remove the lifting eye, and reinstall the timing belt cover and engine cover.

  • Page 104: Cleaning And Flushing

    9. CLEANING AND FLUSHING Thoroughly clean and flush the out- board motor with fresh water after operation in dirty or salty water. Flushing with the Water Hose Joint Do not run the engine dunng this flushing procedure. For safety,remove the emergency stop switch clip, so the engine cannot be started while you are standing near the propeller.
  • Page 105 4. Make sure that the water comes out from the exhaust port. 5. After flushing, remove the water hose joint and re-install the hose joint cap. 9. CLEANING If using a headphone-type flush kit, temporarily cover the water intakes with duct tape. AND FLUSHING...

  • Page 106: 10. Maintenance

    10. MAINTENANCE IMPORTANCE MAINTENANCE Good maintenance is essential for safe, economical, and trouble-free operation. It will also help reduce polution. To help you properly care for your outboard motor, the following pages include a maintenance schedule, routine inspection procedures, and simple maintenance procedures using basic hand tools.

  • Page 107: Tool Kit And Spare Parts

    * To reduce the possibility of fire or explosion, be careful when working around gasoline. Use only a nonflammable solvent, not clean parts. Keep cigarettes, sparks, and flames away from all fuel-related parts. Remember that an authorized Honda Marine dealer knows you outboard motor best and is fully equipped to maintain and repair it.

  • Page 108: Maintenance Schedule

    10. MAINTENANCE MAINTENANCE SCHEDULE REGULAR SERVICE PERIOD (3) ITEM Perform at every indicated month or poerating hour intervals, whichever comes first. Engine oil Check level Change Check level and Check Gear case oil for water contamination Change Engine oil filter Change Check-readjust Engine timing bell...
  • Page 109 Fuel line Check (Replace if necessary) Battery fluid Check level Cable connections Check-tightness Bolts and Nuts Check-tightness NOTE : (1) Lubricate more frequently when used in salt water. (2) These items be serviced by an authorized Honda Marine dealer, should the owner has the proper tools and is mechanically profocient.

  • Page 110: Engine Oil

    10. MAINTENANCE Engine Engine oil is a major factor affecting engine performance, service life, and emission. check interval: Each use. Oil change interval: After the first 20 hours or 1 month, then every 100 hours or 6 months. (Refer to the maintenance schedule page 106).
  • Page 111 Engine Oil Replacement Drain the oil while the engine is still warm to assure rapid and complete draining. 1. Position the outboard motor verti- cally, and remove the engine cover. Remove the oil filler cap. COVER 2. Loosen the drain plug cover screw using a flat blade screwdriver and remove the drain plug cover.

  • Page 112: Gear Oil

    10. MAINTENANCE 7. Inspect the engine oil level and refill to the upper limit mark on the oil level dipstick if necessary. Fill with the recommended oil. NOTE: To avoid incorrect gauging of the engine oil level, inspect the oil level when the engine has cooled.
  • Page 113 LEVEL PLUG VENT PLUG Gear Oil Level Check 1. Position the outboard motor vertically. 2. Remove the level plug and see if oil flows out. If no oil flows out, remove the vent plug. 3. Remove the drain plug and connect the gear oil pump hose to the drain hole.

  • Page 114: 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 or I month then every 200 hours or 6 months (Refer to the maintenance schedule page 106). Recommended spark plug: DR7EA (NGK), X22ESR-U (NIPPON DENSO)

  • Page 115: 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 116 Removal: 1. Disconnect the negative ( - ) battery cable first, then disconnect the posi- tive (+) battery cable. 2. Remove the battery from th,e boat. away. and a...
  • Page 117 Secured away from the fuel tank to avoid potential sparks near the fuel tank. 1. Return the battery to the boat and install it in the battery box. 2. Connect the positive (+) battery cable first, then connect the nega- tive (-) battery cable.

  • Page 118: Lubrication

    10. MAINTENANCE Lubrication Lubrication interval: After the first 20 hours or 1 month, then every 100 hours or 6 months. (Refer to the maintenance schedule page 106.) Apply marine anticorrosion grease to the following parts: TILLER TlLLEH HANDLE PIVOT HANDLE BRACKET - THROTTLE FRICTION-...
  • Page 119 10. MAINTENANCE SHIFT ARM THROTTLE REEL- TILT SHAFT - PROPELLR SHAFT -TILT BRACKET...
  • Page 120 10. MAINTENANCE THROTTLE ARM/ SHIR SHAFT -CHOKE CHOKE KNOB - -ADJUSTING ROD - -SWIVEL CASE -...

  • Page 121: Engine Fuel Filter

    Engine Fuel Filter FUEL PUMP FUEi 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 122 10. MAINTENANCE FUEL FILTER smNc RETAINER 2. Pull the spring retainer toward you, and raise the fuel filter. 3. Check the fuel filter for water accu- mulation or sediment. If no water or seciment are found, reinstall the fuel filter properly. FUEL HOSES FUEL HOSE CLIPS Change...

  • Page 123: Fuel Tank And Filter

    4. Securely connect the fuel hose con- nector to the outboard motor page 5. Prime the engine using the primer bulb page 54. Check for fuel leaks. Repair 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 124: Fuse Replacement

    10. MAINTENANCE FUEL TANK HOSE CONNECTOR ------i FUEL TANK FILTER Fuel Tank Filter Cleaning/Replacem&t 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 125: Propeller

    Replacement 1. Stop the engine. 2. Remove the engine cover. 3. Pull the blown fuse out of the clip. 4. Push a new fuse into the clip. Spare fuses are located in each fuse holder. If the spare fuse is not available, the motor will need to be started with the pull starter rope (refer to the emergency start procedure...

  • Page 126: Submerged Motor

    10. MAINTENANCE 4. Bend 3 tabs of the tab washer into the corresponding grooves of the propeller hub. If 3 washer tabs do not align with the grooves, tighten the nut a little more to obtain alignment. Submerged Motor A submerged motor must be serv- iced immediateI!/ after it is recov- ered from the water in order to minimize corrosion.
  • Page 127 6. Change the engine oil (refer to page 108). 7. Put a teaspoon of engine oil into each spark plug hole to lubricate the inside of the cylinders. Then rotate the engine several times, us- ing the emergency starter rope. Reinstall the spark plugs.

  • Page 128: 11. Storage

    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 highly flammable...
  • Page 129 Fuel Tank (optional equipment) VENT KNOB FUEL CAP 1. Close the fuel cap vent knob. 2. Disconnect the fuel coupling from the outboard motor (refer to page 53). Outboard Motor Position Store the motor vertically, as shown above. Store the outboard motor in a well-ventilated area free from direct sunlight and humidity.
  • Page 130 4. Hook the hoist hook to the lifting eye, and lift the motor from the boat. STAND 5. Place the motor on an outboard motor stand and secure with bolts and nuts. 6. Remove the lifting eye and install the timing belt cover and engine cover.
  • Page 131 Horizontal &rage Before removing the motor from the boat, drain the carburetors and engine oil. Follow the carburetor drain procedure on page 126. PROTECTOR Always rest the motor on protectors, and be sure to protect it from impact and damage.

  • Page 132: 12. Troubleshooting

    12. TROUBLESHOOTING (1) Engine does not start. Fuel Fuel is not fed to carburetor. Fuel is fed to carburetor. Electrical Insufficient - Sparks across sparks spark plug gap Nomal - sparks There is no gasoline No sparks in fuel tank. across spark Vent knob is not open or plug gap...
  • Page 133 (2) Engine starts but immediately times stops while cruising. Fuel No gasoline in fuel tank. Water is mixed with There is gasoline - gasoline. in fuel tank. Vent knob is not open or vent is clogged. Fuel tank filter is clogged.

  • Page 134: 13. Specifications

    13. SPECIFICATIONS MODEL BBAL Description Code Type Overall length 910 mm (35.8 in) Overall width 590 mm (23.2 in) t-J-T&- Transom height 537 mm (21.1 in) Weight 179 kg (394 lb) 33.2 kW (75 H& Rated power Full throttle 5,000 - 6,000 rpri ranee 4-stroke OHC, in-line, 4-cylinder Engine type...
  • Page 135 MODEL BF90A Description Code BBBL Type Overall length 910mm (35.8 in) Overall width 590 mm Transom height 537 mm (21.1 in) Full throttle 5,000 - 6,000 rpm range Engine type 4-stroke OHC, in-line 4-cylinder Displacement 1,590 cc (97.0 cuin) Swk plug gap 0.6 - 0.7 mm (0.024 - 0.028 in) Starter system BBBU...

  • Page 136: Warranty Service

    14. WARRANTY SERVICE CUSTOMER SERVICE INFORMATION Honda Marine dealership personnel are trained professionals. They should be able to answer any question you may have. If you encounter a problem that your dealer does not solve to your satisfaction, please discuss it with the dealership’s management.
  • Page 137 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 138: 15. Index

    Anode Metal ... PRE-OPERATION CHECK ... 44 MOTOR PROTECTION SYSTEM ... 90 Battery (not included) ... 113 Break-in Procedure ... 7.5 Choke Knob ... Choke Switch ..28, 34 Choke/Fast idle Lever ... 22 CLEANING AND FLUSHING ... 102 COMPONENT IDENTIFICATION (common) ...
  • Page 139 15. INDEX Oil Pressure Indicator Light ... 17 Oil Pressure Indicator Light/Buzzer Other Checks ... Over-Rev Limiter ... Overheat Indicator Light ... Overheat Indicator Light/Buzzer ..23, 29, 35 Oxygenated Fuels ... Power Tilt Switch (Motor Pan) CONTROLS ... OPERATION ... Power Trim Tilt Switch ...
  • Page 140 15. INDEX Operation ..............86 Trim Tab Controls .
  • Page 142 TILLER HANDLE TYPE TACHOMETER TRIM METER EMERGENCY STOP SWTCH POWERTRlMmCT SWITCH IGNITION SWITCH COVPLER BRACKET TRIM ANGLE SENSOR ---------em. 16. WIRING DIAGRAM IIlllllI...

This manual is also suitable for:

Outboard motor bf90aMarine bf75aMarine bf90a

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