02/03/25 21:14:16 31ZW0601_001 The engine exhaust from this product contains chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm. Keep this owner’s manual handy, so you can refer to it at any time. This owner’s manual is considered a permanent part of the outboard motor and should remain with the outboard motor if resold. The information and specifications included in this publication were in effect at the time of approval for printing. Honda Motor Co.
02/03/25 21:14:22 31ZW0601_002 INTRODUCTION Congratulations on your selection of a Honda outboard motor. We are certain you will be pleased with your purchase of one of the finest outboard motors on the market. We want to help you get the best results from your new outboard motor and to operate it safely. This manual contains the information on how to do that; please read it carefully. As you read this manual you will find information preceded by a symbol.
02/03/25 21:14:37 31ZW0601_003 INTRODUCTION A FEW WORDS ABOUT SAFETY You will find important safety information in a variety of forms, including: Safety Labels − on the outboard motor. Your safety and the safety of others are very important. And using this outboard motor safely is an important responsibility. Safety Messages − preceded by a safety alert symbol and one of three signal words, DANGER, WARNING, or CAUTION.
02/03/25 21:14:41 31ZW0601_004 CONTENTS OUTBOARD MOTOR SAFETY .................................... 7 IMPORTANT SAFETY INFORMATION ................. 7 SAFETY LABEL LOCATIONS ................................. 9 CONTROLS AND FEATURES ................................... 10 CONTROLS AND FEATURE IDENTIFICATION CODES ................................. 10 COMPONENT AND CONTROL LOCATIONS ..... 11 CONTROLS ............................................................... 17 LHT Type (tiller handle) Ignition Switch ....
02/03/25 21:14:44 31ZW0601_005 CONTENTS INSTRUMENTS ........................................................ 34 Trim Meter (optional equipment) .......................... 34 Tachometer (optional equipment) .......................... 34 Fuel Gauge (optional equipment) .......................... 34 INDICATORS............................................................ 35 Oil Pressure Indicator ............................................. 35 Overheating Indicator ............................................
02/03/25 21:14:48 31ZW0601_006 CONTENTS CRUISING ................................................................. 64 SHALLOW WATER OPERATIONS....................... 66 MOORING, BEACHING, LAUNCHING ................ 66 SERVICING YOUR OUTBOARD MOTOR ............... 68 THE IMPORTANCE OF MAINTENANCE ............ 68 MAINTENANCE SAFETY ...................................... 69 TOLL KIT AND EMERGENCY STARTER ROPE (optional equipment)................................... 70 MAINTENANCE SCHEDULE .....................
02/03/25 21:14:52 31ZW0601_007 CONTENTS TAKING CARE OF UNEXPECTED PROBLEMS......................................................... 100 BATTERY WILL NOT CHARGE AND ELECTRIC STARTER WILL NOT OPERATE........................................................ 106 OIL PRESSURE INDICATOR LIGHT GOES OFF AND ENGINE SPEED IS LIMITED ................. 107 OVERHEATING INDICATOR LIGHT COMES ON AND ENGINE SPEED IS LIMITED........... 108 SUBMERGED MOTOR .........................................
02/03/25 21:15:04 31ZW0601_008 OUTBOARD MOTOR SAFETY IMPORTANT SAFETY INFORMATION Honda BF75A/BF90A outboard motors are designed for use with boats that have a suitable manufacturer’s power recommendation. Other uses can result in injury to the operator or damage to the outboard motor and other property. Most accidents can be prevented if you follow all instructions in this manual and on the outboard motor. The most common hazards are discussed below, along with the best way to protect yourself and others.
02/03/25 21:15:11 31ZW0601_009 OUTBOARD MOTOR SAFETY Refuel With Care Gasoline is extremely flammable, and gasoline vapor can explode. Refuel outdoors, in a wellventilated area, with the engine stopped. Never smoke near gasoline, and keep other flames and sparks away. Remove any portable fuel tank from the boat for refueling. Keep the portable fuel tank away from the battery or other potential spark sources. Refuel carefully to avoid spilling fuel. Avoid overfilling the fuel tank.
02/03/25 21:15:32 31ZW0601_010 OUTBOARD MOTOR SAFETY SAFETY LABEL LOCATIONS OPTIONAL FUEL TANK The labels shown here contain important safety information. Please read them carefully. These labels are considered permanent parts of your outboard motor. If a label comes off or becomes hard to read, contact an authorized Honda Marine servicing dealer for a replacement.
02/03/25 21:15:48 31ZW0601_011 CONTROLS AND FEATURES CONTROL AND FEATURE IDENTIFICATION CODES Model BF75A LHT Type LRT BF90A XRT LHT LRT L Shaft Length X Tiller Handle Remote Control Power Trim/Tilt Trim Meter (optional equipment) Refer to this chart for an explanation of the Type Codes used in this manual to identify control and feature applications.
02/03/25 21:15:55 31ZW0601_012 CONTROLS AND FEATURES COMPONENT AND CONTROL LOCATIONS LHT Type (tiller handle) THROTTLE GRIP TILLER HANDLE COOLING SYSTEM INDICATOR ENGINE COVER FUEL HOSE CONNECTOR ENGINE OIL DRAIN BOLT TRANSOM ANGLE ADJUSTING ROD THROTTLE FRICTION KNOB WASH PLUG (Flush Plug) SHIFT LEVER ANTIVENTILATION PLATE ANODE OIL FILLER CAP CHOKE KNOB ENGINE COVER LOCK LEVER POWER TILT SWITCH MANUAL RELIEF VALVE OIL LEVEL DIPSTICK ENGINE OIL DRAIN BOLT ACCESS COVER IGNITION SWITCH ANODE
02/03/25 21:16:03 31ZW0601_013 CONTROLS AND FEATURES OIL PRESSURE INDICATOR LIGHT SPARE SWITCH CLIP (optional equipment) EMERGENCY STOP SWITCH THROTTLE FRICTION KNOB LANYARD OVERHEAT INDICATOR LIGHT IGNITION SWITCH GEARSHIFT LEVER SWITCH CLIP POWER TRIM/TILT SWITCH 12
02/03/25 21:16:11 31ZW0601_014 CONTROLS AND FEATURES LRT and XRT Types (remote control) ENGINE COVER POWER TILT SWITCH OIL LEVEL DIPSTICK OIL FILLER CAP COOLING SYSTEM INDICATOR CHOKE KNOB ENGINE COVER LOCK LEVER MANUAL RELIEF VALVE WASH PLUG (Flush Plug) ANODE ANODE ENGINE OIL DRAIN BOLT FUEL HOSE CONNECTOR ENGINE OIL DRAIN BOLT ACCESS COVER ANODE TRANSOM ANGLE ADJUSTING ROD ANTIVENTILATION PLATE EXHAUST PORT TRIM TAB OIL LEVEL CHECK PLUG WATER INTAKE GEAR OIL DRAIN PLUG REAR VENT PLUG 13
02/03/25 21:16:19 31ZW0601_015 CONTROLS AND FEATURES Remote Controls (optional equipment) (SIDE-MOUNT REMOTE CONTROL) POWER TRIM/TILT SWITCH (PANEL-MOUNT REMOTE CONTROL) GEARSHIFT/THROTTLE CONTROL LEVER NEUTRAL RELEASE LEVER NEUTRAL RELEASE LEVER OIL PRESSURE INDICATOR LIGHT OVERHEAT INDICATOR LIGHT GEARSHIFT/THROTTLE CONTROL LEVER CHOKE/FAST IDLE LEVER POWER TRIM/TILT SWITCH SPARE SWITCH CLIP IGNITION SWITCH BUZZER (inside) CONTROL LEVER FRICTION ADJUSTER FAST IDLE BUTTON LANYARD EMERGENCY STOP
02/03/25 21:16:25 31ZW0601_016 CONTROLS AND FEATURES (SINGLE TOP-MOUNT REMOTE CONTROL) (DUAL TOP-MOUNT REMOTE CONTROL) CONTROL LEVER CONTROL LEVERS POWER TRIM/TILT SWITCH (RIGHT) POWER TRIM/TILT SWITCH POWER TRIM/TILT SWITCH (LEFT) CONTROL PANEL (for PANEL/TOP-MOUNT type) FAST IDLE BUTTON OIL PRESSURE INDICATOR LIGHT FAST IDLE BUTTON BUZZER IGNITION SWITCH OVERHEAT INDICATOR LIGHT SWITCH CLIP CHOKE SWITCH LANYARD EMERGENCY STOP SWITCH 15
02/03/25 21:16:32 31ZW0601_017 CONTROLS AND FEATURES Fuel Tank (optional equipment) Trim Meter (optional equipment) FUEL GAUGE VENT KNOB FUEL TANK (optional equipment) FUEL CAP FUEL HOSE (standard equipment) PRIMING BULB 16 FUEL HOSE CONNECTOR (female)
02/03/25 21:16:52 31ZW0601_018 CONTROLS AND FEATURES CONTROLS LHT Type (tiller handle) Ignition Switch IGNITION SWITCH The engine will not start unless the gearshift lever (p. 19 ) is in the N (neutral) position, and the emergency stop switch clip is in the emergency stop switch. Turning the ignition switch to the OFF position stops the engine.
02/03/25 21:17:07 31ZW0601_019 CONTROLS AND FEATURES Choke Knob Throttle Grip OPEN CLOSE The throttle grip can be turned to the FAST position only when the gearshift lever is in the F (forward) position. THROTTLE GRIP CHOKE KNOB The choke knob opens and closes the choke valves in the carburetors. The throttle grip controls engine speed. The CLOSED position enriches the fuel mixture for starting a cold engine.
02/03/25 21:17:26 31ZW0601_020 CONTROLS AND FEATURES Throttle Friction Knob SET Gearshif t Lever N (neutral) RELEASE R (reverse) THROTTLE FRICTION KNOB The throttle friction knob adjusts resistance to throttle grip rotation. Less friction allows easier throttle grip rotation. More friction helps to hold a steady throttle setting while cruising. Power Trim/Tilt Switch F (forward) GEARSHIFT LEVER The gearshift lever is used to select F (forward), N (neutral), or R (reverse) gears.
02/03/25 21:17:40 31ZW0601_021 CONTROLS AND FEATURES Steering Friction Knob LRT and XRT Types (remote control) Ignition Switch (side-mount type) OFF ON START DECREASE FRICTION POWER TRIM/TILT SWITCH Trim the outboard motor to obtain the best performance and stability (p. 64 ). Tilt the outboard motor for shallow water operation, beaching, launching, or mooring. 20 STEERING FRICTION ADJUSTER INCREASE FRICTION The steering friction knob adjusts steering resistance.
02/03/25 21:17:53 31ZW0601_022 CONTROLS AND FEATURES Turning the ignition switch key to the START position operates the starter motor. The key automatically returns to the ON position when released from the START position. Switch Clip and Emergency Stop Switch (side-mount type) EMERGENCY STOP SWITCH The ignition switch can be used to operate the starter motor only when the gearshift lever (p. 19 ) is in the N (neutral) position, and the switch clip is in the emergency stop switch.
02/03/25 21:18:03 31ZW0601_023 CONTROLS AND FEATURES Choke/Fast Idle Lever Gearshif t/Throttle Control Lever (side-mount type) (side-mount type) N (neutral) CHOKE MAXIMUM FAST IDLE GEARSHIFT/THROTTLE CONTROL LEVER OPEN CHOKE/FAST IDLE LEVER NEUTRAL RELEASE LEVER The gearshift/throttle control lever controls engine speed and selects F (forward), N (neutral), or R (reverse) gears. The choke/fast idle lever opens and closes the choke valves in the carburetors.
02/03/25 21:18:10 31ZW0601_024 CONTROLS AND FEATURES Moving the control lever 30° from N (neutral) selects the gear, and further movement increases engine speed. The control lever automatically locks itself in the N (neutral) position. To move the lever out of the N (neutral) position, you must squeeze the neutral release lever on the underside of the lever handle. A friction adjuster near the base of the control lever adjusts the operating resistance of the control lever (p. 62 ).
02/03/25 21:18:21 31ZW0601_025 CONTROLS AND FEATURES Ignition Switch (panel-mount type) ON START OFF IGNITION SWITCH KEY Turning the ignition switch key to the START position operates the starter motor. The key automatically returns to the ON position when released from the START position. The ignition switch can be used to operate the starter motor only when the control lever (p. 26 ) is in the N (neutral) position, and the switch clip is in the emergency stop switch.
02/03/25 21:18:33 31ZW0601_026 CONTROLS AND FEATURES The switch clip must be inserted in the emergency stop switch in order for the engine to start and run. The lanyard must be attached to the operator’s PFD (Personal Flotation Device) or worn around the wrist as shown. When used as described, the emergency stop switch and lanyard system stops the engine if the operator falls away from the controls. A spare switch clip is stored in the tool bag (optional equipment).
02/03/25 21:18:41 31ZW0601_027 CONTROLS AND FEATURES Moving the control lever 35° from N (neutral) selects the gear, and further movement increases engine speed. The control lever automatically locks itself in the N (neutral) position. To move the lever out of the N (neutral) position, you must squeeze the neutral release lever on the underside of the lever handle.
02/03/25 21:18:52 31ZW0601_028 CONTROLS AND FEATURES Ignition Switch (top-mount type) ON START OFF IGNITION SWITCH KEY Turning the ignition switch key to the START position operates the starter motor. The key automatically returns to the ON position when released from the START position. The ignition switch can be used to operate the starter motor only when the control lever (p. 29 ) is in the N (neutral) position, and the switch clip is in the emergency stop switch.
02/03/25 21:19:07 31ZW0601_029 CONTROLS AND FEATURES The switch clip must be inserted in the emergency stop switch in order for the engine to start and run. The lanyard must be attached to the operator’s PFD (Personal Flotation Device) or worn around the wrist as shown.
02/03/25 21:19:14 31ZW0601_030 CONTROLS AND FEATURES Moving the control lever 35° from N (neutral) selects the gear, and further movement increases engine speed. A friction adjuster inside the control box adjusts the operating resistance of the control lever(s). Less friction allows easier control lever movement. More friction helps to hold a steady throttle setting while cruising.
02/03/25 21:19:24 31ZW0601_031 CONTROLS AND FEATURES Common Controls The power trim/tilt switch is located on the control lever. It is a rocker switch with UP and DN (down) positions for changing the angle of the outboard motor.
02/03/25 21:19:37 31ZW0601_032 CONTROLS AND FEATURES Choke Switch (panel-mount and top-mount types) Manual Choke Knob OPEN CHOKE SWITCH When the engine is cold, put the choke switch ON. A rich fuel mixture will be provided to the engine. Power Tilt Switch CLOSE CHOKE KNOB A manual choke knob is located on the right side of the motor, which can be used in the event the battery is discharged. Pull the manuel choke knob, and a rich fuel mixture will be provided to the engine.
02/03/25 21:19:56 31ZW0601_033 CONTROLS AND FEATURES Manual Relief Valve Tilt Lock Lever MANUAL RELIEF VALVE FREE MANUAL (To release) Engine Cover Lock Levers TILT LOCK LEVER LOCK LOCK POWER (To f ix) The outboard motor can be tilted manually after opening the manual relief valve. This allows the outboard motor to be tilted when no battery is connected. FREE FRONT ENGINE COVER LOCK LEVER The tilt lock lever is used to support the outboard motor in the fully-raised position.
02/03/25 21:20:11 31ZW0601_034 CONTROLS AND FEATURES Transom Angle Adjusting Rod STERN BRACKET The transom angle adjusting rod limits the tilt angle of the outboard motor when fully lowered. Trim Tab Proper adjustment prevents the outboard motor from being trimmed too low (p. 64 ).
02/03/25 21:20:24 31ZW0601_035 CONTROLS AND FEATURES INSTRUMENTS Tachometer (optional equipment) Fuel Gauge (optional equipment) Trim Meter (optional equipment) FUEL GAUGE TRIM METER The trim meter has a range of 0° to 20° and indicates the trim angle of the outboard motor. Refer to the trim meter when using the power trim/tilt switch to achieve the best performance from the boat. 34 TACHOMETER The tachometer shows engine speed in revolutions per minute.
02/03/25 21:20:38 31ZW0601_036 CONTROLS AND FEATURES INDICATORS LRT and XRT Types Oil Pressure Indicator (side-mount type) When the green light is lit, oil pressure is OK. If oil pressure becomes low, the green light will go off, and the engine protection system will limit engine speed. LHT Type (GREEN) (GREEN) (panel-mount and top-mount types) Remote controls are also equipped with a buzzer that sounds when the green light goes off.
02/03/25 21:20:51 31ZW0601_037 CONTROLS AND FEATURES Overheating Indicator LRT and XRT Types LHT Type (side-mount type) If the engine overheats, the red light will come on, and the engine protection system will limit engine speed. (RED) (RED) Remote controls are also equipped with a buzzer that sounds when the red light comes on. Engine overheating may be the result of clogged water intakes.
02/03/25 21:21:06 31ZW0601_038 CONTROLS AND FEATURES Cooling System Indicator OTHER FEATURES Anodes Overrev Limiter The engine is equipped with an overrev limiter to prevent the possibility of mechanical damage from excessive engine speed. COOLING SYSTEM INDICATOR Water should flow from the cooling system indicator while the engine is running. This shows that water is circulating through the cooling system.
02/03/25 21:21:19 31ZW0601_039 CONTROLS AND FEATURES Portable Fuel Tank (optional equipment) Fuel Cap Vent Knob (optional equipment) VENT KNOB Fuel Priming Bulb UP OUTLET END (MOTOR) CLOSE OPEN PRIMING BULB FUEL CAP The portable fuel tank has a capacity of 6.6 US gal ( 25 ) and has a fuel gauge built into the cap. 38 The cap is provided with a vent knob to seal the portable fuel tank for carrying it to and from the boat. Open the vent knob 2 or 3 turns before starting the engine (p. 44 ).
02/03/25 21:21:31 31ZW0601_040 BEFORE OPERATION ARE YOU READY TO GET UNDER WAY? Your safety is your responsibility. A little time spent in preparation will significantly reduce your risk of injury. Safety Always wear a PFD (Personal Flotation Device) while on the boat. Attach the emergency stop switch lanyard securely to your PFD or to your wrist. Knowledge Read and understand this manual. Know what the controls do and how to operate them.
02/03/25 21:21:45 31ZW0601_041 BEFORE OPERATION Safety Inspection Look around the outboard motor for signs of oil or gasoline leaks. Check that all fasteners are in place and securely tightened. Maintenance Inspection Check the engine oil level (p. 76 ). Running the engine with a low oil level can cause engine damage. If you are using the portable fuel tank (optional equipment), make sure it is in good condition and properly secured in the boat (p. 43 ).
02/03/25 21:21:58 31ZW0601_042 OPERATION SAFE OPERATING PRECAUTIONS BREAK-IN PROCEDURE Break-in period: 10 hours To safely realize the full potential of this outboard motor, you need a complete understanding of its operation and a certain amount of practice with its controls. Proper break-in operation allows the moving parts to wear in smoothly for best performance and long service life.
02/03/25 21:22:13 31ZW0601_043 OPERATION TRANSOM ANGLE ADJUSTMENT STERN BRACKET The transom angle adjusting rod limits the tilt angle of the outboard motor when fully lowered. Proper adjustment prevents the outboard motor from being trimmed too low (p. 65 ). TURN UP To adjust, first tilt the outboard motor so it is not resting on the rod. PUSH Push the rod in and turn the end of the rod up, so the latch will fall into line with the rod.
02/03/25 21:22:28 31ZW0601_044 OPERATION PORTABLE FUEL TANK (optional equipment) Secure the portable fuel tank in the boat, so it won’t move around and become damaged. FUEL HOSE CONNECTIONS FUEL HOSE CONNECTOR Before use, open the fuel tank vent by turning the vent knob at least 2 or 3 turns counterclockwise. Gasoline is highly flammable and explosive.
02/03/25 21:22:43 31ZW0601_045 OPERATION FUEL PRIMING STARTING THE ENGINE The engine will not start or run, unless the clip is in the switch. LHT Type (tiller handle) OUTLET END (MOTOR) EMERGENCY STOP SWITCH PRIMING BULB Always attach the lanyard to your PFD, or to your wrist, before starting the engine. INLET END (TANK) Hold the priming bulb with the outlet end higher than the inlet end. Squeeze the priming bulb several times, until it feels firm, indicating that fuel has reached the carburetor.
02/03/25 21:22:55 31ZW0601_046 OPERATION ENGINE START SYMBOL N (neutral) CLOSED CHOKE KNOB GEARSHIFT LEVER 2. Check the position of the gearshift lever. It must be in the N (neutral) position for starting. The engine will not start if the gearshift lever is in the F (forward) or R (reverse) position. POINTER THROTTLE GRIP 3. To start a cold engine, pull the choke knob to the CLOSED position. To restart a warm engine, leave the choke knob in the OPEN position. 4.
02/03/25 21:23:10 31ZW0601_047 OPERATION Using the electric starter f or more than 5 seconds at a time will overheat the starter motor and can damage it. IGNITION SWITCH KEY START OFF Turning the ignition switch key to the START position while the engine is running can damage the starter motor and f lywheel. ON 5. Turn the ignition switch key to the START position, and hold it there until the engine starts. 6.
02/03/25 21:23:20 31ZW0601_048 OPERATION LRT and XRT Types (remote control) The engine will not start or run, unless the clip is in the switch. Side-Mount Type The emergency stop switch clip and lanyard system is a safety device that will stop the engine if you fall away from the controls while operating the boat. EMERGENCY STOP SWITCH N (neutral) CONTROL LEVER Always attach the lanyard to your PFD, or to your wrist, before starting the engine. SWITCH CLIP LANYARD 1.
02/03/25 21:23:31 31ZW0601_049 OPERATION CHOKE MAXIMUM FAST IDLE FAST IDLE RANGE ON OFF START Using the electric starter f or more than 5 seconds at a time will overheat the starter motor and can damage it. Turning the ignition switch key to the START position while the engine is running can damage the starter motor and f lywheel. CHOKE/FAST IDLE LEVER 3. To start a cold engine, fully raise the choke and fast idle lever.
02/03/25 21:23:41 31ZW0601_050 OPERATION FAST IDLE LEVER 6. Before getting under way, allow the engine to warm up sufficiently to ensure good performance. Above 41°F (5°C), warm up the engine for 2 or 3 minutes. Below 41°F (5°C), warm up the engine for at least 10 minutes at 2,000 rpm. 5. If the choke and fast idle lever was used to start the engine, gradually lower the lever as the engine warms up.
02/03/25 21:23:51 31ZW0601_051 OPERATION Panel-Mount Type The engine will not start or run, unless the clip is in the switch. EMERGENCY STOP SWITCH The emergency stop switch clip and lanyard system is a safety device that will stop the engine if you fall away from the controls while operating the boat. Always attach the lanyard to your PFD, or to your wrist, before starting the engine. SWITCH CLIP CONTROL LEVER LANYARD 1.
02/03/25 21:24:02 31ZW0601_052 OPERATION N (neutral) If the engine fails to start within 5 seconds, release the key and wait at least 10 seconds before operating the starter again. START ON OFF ON CONTROL LEVER FAST IDLE BUTTON 3. Press the fast idle button and move the control lever to open the throttle 30−50%. This ensure easy starting. 4. To start a cold engine, put on the choke switch. This will provide a rich fuel mixture. IGNITION SWITCH KEY CHOKE SWITCH 5.
02/03/25 21:24:11 31ZW0601_053 OPERATION N (neutral) 7. Before getting under way, allow the engine to warm up sufficiently to ensure good performance. Above 41°F (5°C), warm up the engine for 2 or 3 minutes. CONTROL LEVER 6. If the fast idle control was used to start the engine, gradually return the lever as the engine warms up. The control lever will not shift the gears unless it is returned to the N (neutral) position. 52 Below 41°F (5°C), warm up the engine for at least 10 minutes at 2,000 rpm.
02/03/25 21:24:20 31ZW0601_054 OPERATION Top-Mount Type The engine will not start or run, unless the clip is in the switch. EMERGENCY STOP SWITCH The emergency stop switch clip and lanyard system is a safety device that will stop the engine if you fall away from the controls while operating the boat. Always attach the lanyard to your PFD, or to your wrist, before starting the engine. SWITCH CLIP N (neutral) CONTROL LEVER LANYARD 1.
02/03/25 21:24:33 31ZW0601_055 OPERATION N (neutral) If the engine fails to start within 5 seconds, release the key and wait at least 10 seconds before operating the starter again. START ON CONTROL LEVER OFF ON FAST IDLE BUTTON 3. Move the control lever forward or backward pushing the fast idle button to open the throttle slightly. 4. To start a cold engine, put on the choke switch. This will provide a rich fuel mixture. 54 IGNITION SWITCH KEY CHOKE SWITCH 5.
02/03/25 21:24:42 31ZW0601_056 OPERATION N (neutral) 7. Before getting under way, allow the engine to warm up sufficiently to ensure good performance. Above 41°F (5°C), warm up the engine for 2 or 3 minutes. Below 41°F (5°C), warm up the engine for at least 10 minutes at 2,000 rpm. CONTROL LEVER During the warm-up period, check the oil pressure indicator (p. 35 ), overheating indicator (p. 36 ), and cooling system indicator (p. 37 ).
02/03/25 21:24:54 31ZW0601_057 OPERATION EMERGENCY STARTING FREE If the battery is discharged, or the starter motor is inoperative, you can start the engine manually using the emergency starter rope supplied with the tool kit. (FRONT) BOLTS CLIPS BOLTS (REAR) FREE ENGINE COVER LOCK LEVER 1. Unlock and remove the engine cover. ENGINE COVER LOCK LEVER TIMING BELT COVER 2. Remove the timing belt cover by unscrewing the four cover bolts and unlatching the three clips. 3.
02/03/25 21:25:08 31ZW0601_058 OPERATION KNOT If necessary, rewind the rope and pull again. If the engine does not start after several attempts, refer to TAKING CARE OF UNEXPECTED PROBLEMS, p. 100. EMERGENCY STARTER ROPE STARTER PULLEY 4. Set the knotted end of the emergency starter rope in the notch in the starter pulley. Wind the rope clockwise around the starter pulley, as shown. 5. Pull the emergency starter rope slowly until resistance is felt, then pull briskly.
02/03/25 21:25:22 31ZW0601_059 OPERATION 6. If the choke and fast idle control(s) was used to start the engine, return the control(s) to the normal operating position as the engine warms up. During the warm-up period, check the oil pressure indicator (p. 35 ), overheating indicator (p. 36 ), and cooling system indicator (p. 37 ). 7. Leave the recoil starter assembly off, but install the engine cover (p. 32 ), and lock it in place by latching the engine cover latch. Exposed moving parts can cause injury.
02/03/25 21:25:35 31ZW0601_060 OPERATION Panel-Mount/Top-Mount Types Normal Engine Stopping Side-Mount Type Tiller-Handle Type EMERGENCY STOP SWITCH N (neutral) CONTROL PANEL LANYARD PULL SLOW CONTROL LEVER SWITCH CLIP THROTTLE GRIP To stop the engine in an emergency, pull the clip out of the engine or emergency stop switch by pulling the lanyard.
02/03/25 21:25:48 31ZW0601_061 OPERATION Top-Mount Type Tiller-Handle Type Panel-Mount/Top-Mount Types N (neutral) OFF OFF CONTROL LEVER IGNITION SWITCH IGNITION SWITCH KEY 1. Move the throttle grip to the slowest speed and control gears to N (neutral) position. Side-Mount Type 2. Turn the ignition switch key to the OFF position. 3. When the boat is not in use, remove and store the ignition key and the emergency stop switch clip and lanyard.
02/03/25 21:26:05 31ZW0601_062 OPERATION GEARSHIFTING AND THROTTLE OPERATION LHT Type (tiller handle) THROTTLE GRIP POINTER SLOW FAST N (neutral) F (forward) To shift gears, turn the throttle grip to the SLOW position, then move the gearshift lever to select F (forward), N (neutral) or R (reverse) gears. FIX RELEASE The engine can be started with the gearshift lever in the N (neutral) position only.
02/03/25 21:26:19 31ZW0601_063 OPERATION LRT and XRT Types (remote control) Panel-Mount Type Side-Mount Type F (forward) To shift gears, move the control lever to select F (forward), N (neutral) and R (reverse) gears. N (neutral) R (reverse) CONTROL LEVER Moving the control lever beyond the gear selection range increases engine speed.
02/03/25 21:26:36 31ZW0601_064 OPERATION Panel-Mount Type STEERING CONTROL LEVER FRICTION ADJUSTER LHT Type (tiller handle) RIGHT TURN LEFT TURN TO INCREASE FRICTION STEERING FRICTION INCREASE KNOB FRICTION TO DECREASE FRICTION Top-Mount Type Use the steering friction knob to help hold a steady course while cruising. Move the tiller handle to the left. TO INCREASE FRICTION TO DECREASE FRICTION Move the tiller handle to the right.
02/03/25 21:26:50 31ZW0601_065 OPERATION CRUISING motor. Engine Speed Trim For best fuel economy, limit the throttle opening to 80%. Use the throttle friction control (p. 61 − 63 ) to help you hold a steady speed. Use the power trim/tilt switch to trim the outboard motor for the best performance and stability. For rough water conditions or large waves, slow down to prevent the propeller from rising out of the water.
02/03/25 21:27:05 31ZW0601_066 OPERATION Tiller-Handle Type Panel-Mount Type POWER TRIM/TILT SWITCH Top-Mount Type MOTOR TRIMMED TOO LOW ROUGH WAVES MOTOR TRIMMED TOO HIGH MOTOR TRIMMED CORRECTLY (single type) POWER TRIM/TILT SWITCH POWER TRIM/TILT SWITCH BOW TOO LOW DUE TO 1. LOAD IN THE FRONT 2. MOTOR TRIMMED TOO LOW Side-Mount Type POWER TRIM/TILT SWITCH (dual type) POWER TRIM/TILT SWITCH (LEFT) (RIGHT) BOW TOO HIGH DUE TO 1. LOAD IN THE REAR 2.
02/03/25 21:27:20 31ZW0601_067 OPERATION If steering effort is not equal in both directions, adjust the trim tab to compensate for ‘‘torque steer,’’ which is the reaction of the outboard motor to propeller rotation. TRIM TAB TIGHTENING BOLT Adjust the trim tab with the engine stopped. Loosen the bolt above the trim tab, turn the trim tab, then tighten the bolt securely. When the trim tab is correctly adjusted, steering effort will be equal in both directions.
02/03/25 21:27:33 31ZW0601_068 OPERATION Do not attempt to use the power tilt switch to tilt the outboard motor down while the tilt lock lever is in the lock position. Damage to the power tilt system may occur. MANUAL RELIEF VALVE For manual tilting, use a screwdriver to turn the valve counterclockwise 1 or 2 turns. Close the valve firmly after positioning the engine. Be sure the valve is closed before operating the outboard motor.
02/03/25 21:27:43 31ZW0601_069 SERVICING YOUR OUTBOARD MOTOR THE IMPORTANCE OF MAINTENANCE Good maintenance is essential for safe, economical, and trouble-free operation. It will also help reduce air pollution. Improperly maintaining this outboard motor, or failure to correct a problem before operation, can cause a malfunction in which you could be seriously hurt or killed. Always follow the inspection and maintenance recommendations and schedules in this owner’s manual.
02/03/25 21:27:55 31ZW0601_070 SERVICING YOUR OUTBOARD MOTOR MAINTENANCE SAFETY Some of the most important safety precautions follow. However, we cannot warn you of every conceivable hazard that can arise in performing maintenance. Only you can decide whether or not you should perform a given task. Failure to properly follow maintenance instructions and precautions can cause you to be seriously hurt or killed. Always follow the procedures and precautions in the owner’s manual.
02/03/25 21:28:02 31ZW0601_071 SERVICING YOUR OUTBOARD MOTOR TOOL KIT AND EMERGENCY STARTER ROPE 14 × 17 mm WRENCH 10 × 12 mm WRENCH 8 mm WRENCH PLIERS SCREWDRIVER HANDLE EMERGENCY STARTER ROPE The following tools are supplied by your dealer for simple maintenance procedures and emergency repairs. Keep these items on the boat, so they will always be available if you need them.
02/03/25 21:28:13 31ZW0601_072 SERVICING YOUR OUTBOARD MOTOR MAINTENANCE SCHEDULE REGULAR SERVICE PERIOD (3) Perform at every indicated month or operating hour interval, whichever comes first.
02/03/25 21:28:27 31ZW0601_073 SERVICING YOUR OUTBOARD MOTOR REGULAR SERVICE PERIOD (3) Perform at every indicated month or operating hour interval, whichever comes first. ITEM Fuel tank and tank filter Thermostat Fuel filter Fuel line Battery and cable connection Bolts and nuts Crankcase breather tube Cooling water passages Each use Clean Check Check Change Check Replace Check level-tightness Check-tightness Check Clean After use First month or 20 hrs. Every 6 months or 100 hrs.
02/03/25 21:28:44 31ZW0601_074 SERVICING YOUR OUTBOARD MOTOR TRIM TAB ADJUSTMENT The trim tab compensates for ‘‘torque steer’’ which is a reaction of the outboard motor to propeller rotation. If uncompensated, torque steer would make the outboard motor tend to turn to one side. When the trim tab is correctly adjusted, steering effort is equal in either direction. If steering effort is unequal, loosen the trim tab bolt and adjust the angle of the trim tab. Retighten the trim tab bolt securely.
02/03/25 21:28:59 31ZW0601_075 SERVICING YOUR OUTBOARD MOTOR MANUAL RELIEF VALVE MANUAL RELIEF VALVE ENGINE COVER REMOVAL AND INSTALLATION FRONT POWER (To f ix) MANUAL (To release) The outboard motor can be tilted manually after opening the manual relief valve. This feature enables the outboard motor to be tilted when no battery is connected. For manual tilting, use a screwdriver to turn the valve counterclockwise 1 or 2 turns. Close the valve firmly after positioning the outboard motor.
02/03/25 21:29:08 31ZW0601_076 SERVICING YOUR OUTBOARD MOTOR Lock Lever Adjustment REAR A loose engine cover may rattle or allow water to enter. Check whether the engine cover fits properly and adjust if necessary. 0.19 − 0.23 in (4.8 − 5.8 mm) Lock Lever Bracket Adjustment 1. Remove the engine cover. HOOK BRACKET Engine Cover Clearance Inspection FRONT 0.19 − 0.23 in (4.8 − 5.
02/03/25 21:29:29 31ZW0601_077 SERVICING YOUR OUTBOARD MOTOR Engine Oil Level Check Engine Oil Change OIL FILLER CAP Check the engine oil level with the engine stopped and the outboard motor in the vertical position. An engine oil evacuation/filling device may be used to remove/add the engine oil. 1. Unlock and remove the engine cover (p. 74 ). Drain the used oil while the engine is warm. Warm oil drains quickly and completely. 2. Remove the dipstick and wipe it clean. 1.
02/03/25 21:29:47 31ZW0601_078 SERVICING YOUR OUTBOARD MOTOR WASHER Oil Filter Change DRAIN PLUG GUIDE Improper disposal of engine oil can be harmf ul to the environment. If you change your own oil, please dispose of the used oil properly. Put it in a sealed container, and take it to a recycling center. Do not discard it in a trash bin or dump it on the ground. 5. Install the oil drain cover and secure it with the screw. 3.
02/03/25 21:30:02 31ZW0601_079 SERVICING YOUR OUTBOARD MOTOR 4. Clean the oil filter mounting base, and coat the gasket of the new oil filter with clean engine oil. OIL FILTER Use only a genuine Honda oil f ilter or a f ilter of equivalent quality specif ied f or your model. Using the wrong f ilter, or a nonHonda f ilter which is not of equivalent quality, may cause engine damage. OIL DRAIN GUIDE USE A SUITABLE TOOL 5.
02/03/25 21:30:08 31ZW0601_080 SERVICING YOUR OUTBOARD MOTOR Engine Oil Recommendations Oil is a major factor affecting performance and service life. Use 4-stroke automotive detergent oil. SAE Viscosity Grades The SAE oil viscosity and service classification are in the API label on the oil container. Honda recommends that you use API SERVICE category SG, or SH oil with the ‘‘starburst’’ certification mark displayed on the container. AMBIENT TEMPERATURE SAE 10W-30 is recommended for general use.
02/03/25 21:30:25 31ZW0601_081 SERVICING YOUR OUTBOARD MOTOR Lubrication Points Wipe the outside of the engine with a cloth dipped in oil. Apply marine anticorrosion grease to the following parts: Lubrication interval: After the first 20 hours or 1 month, then every 100 hours or 6 months. (Refer to the maintenance schedule page 71 ). TILLER HANDLE PIVOT THROTTLE FRICTION KNOB Apply anticorrosion oil to pivot surf aces where grease cannot penetrate.
02/03/25 21:30:39 31ZW0601_082 SERVICING YOUR OUTBOARD MOTOR SHIFT ARM THROTTLE REEL TILT SHAFT PROPELLER SHAFT TILT BRACKET 81
02/03/25 21:30:53 31ZW0601_083 SERVICING YOUR OUTBOARD MOTOR THROTTLE ARM/ SHIFT SHAFT CHOKE ARM CHOKE KNOB ADJUSTING ROD SWIVEL CASE 82
02/03/25 21:31:09 31ZW0601_084 SERVICING YOUR OUTBOARD MOTOR Spark Plug Service 0.024 − 0.028 in (0.60 − 0.70 mm) RECOMMENDED SPARK PLUGS: DR7EA (NGK) X22ESR-U (DENSO) SEALING WASHER Incorrect spark plugs can cause engine damage. 1. Unlock and remove the engine cover (p. 74 ). 2. Disconnect the spark plug caps from the spark plugs. 3. Remove the spark plugs with a spark plug wrench and 17mm wrench. SPARK PLUG WRENCH 17mm WRENCH 4. Inspect the spark plugs.
02/03/25 21:31:23 31ZW0601_085 SERVICING YOUR OUTBOARD MOTOR 7. After each spark plug seats, tighten with a spark plug wrench supplied in the tool kit to compress the sealing washer. If reinstalling used spark plugs, tighten 1/8 - 1/4 turn after the spark plugs seat. CORD 1 PLUG 1 PLUG 2 CORD 2 PLUG 3 CORD 3 6. Install the spark plugs carefully, by hand, to avoid cross-threading. If installing new spark plugs, tighten 1/2 turn after the spark plugs seat.
02/03/25 21:31:40 31ZW0601_086 SERVICING YOUR OUTBOARD MOTOR REFUELING Portable Fuel Tank (optional equipment) Gasoline is highly flammable and explosive. FUEL TANK CAPACITY: 6.61 US gal (25.0 , 5.50 Imp gal) You can be burned or seriously injured when handling fuel. Check the fuel gauge and refill the tank when necessary. FUEL GAUGE SAFE FILL LEVEL Remove the fuel tank from the boat for refueling. VENT KNOB OPEN Stop the engine and keep heat, sparks, and flame away. Handle fuel only outdoors.
02/03/25 21:31:48 31ZW0601_087 SERVICING YOUR OUTBOARD MOTOR FUEL RECOMMENDATIONS Use unleaded gasoline with a pump octane rating of 86 or higher. Your outboard motor is certified 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/gasoline mixture. Avoid getting dirt or water in the fuel tank.
02/03/25 21:31:58 31ZW0601_088 SERVICING YOUR OUTBOARD MOTOR Fuel Pump Filter Inspection and Replacement The fuel pump filter is located under the engine cover between the fuel coupling and the fuel pump. Water or sediment accumulated in the filter can cause loss of power or hard starting. To prevent engine malfunction, inspect the filter and replace when necessary. CONNECTOR FUEL HOSE Gasoline is highly flammable and explosive. You can be burned or seriously injured when handling fuel.
02/03/25 21:32:11 31ZW0601_089 SERVICING YOUR OUTBOARD MOTOR FUEL FILTER SPRING RETAINR 2. Pull the spring retainer toward you, and raise the fuel filter. 3. Check the fuel filter for water accumulation or sediment. If no water or sediment are found, reinstall the fuel filter properly. FUEL HOSES FUEL HOSE CLIPS 4. Remove the fuel filter. Before removing the fuel filter, to prevent fuel leakage, place fuel hose clamps on the fuel hoses at the each side of the fuel filter.
02/03/25 21:32:22 31ZW0601_090 SERVICING YOUR OUTBOARD MOTOR 7. Securely connect the fuel hose connector to the outboard motor (refer to page 38 ). Portable Fuel Tank and Filter Cleaning (optional equipment) 8. Prime the engine using the primer bulb (refer to page 44 ). Check for fuel leaks. Repair any fuel leaks if necessary.
02/03/25 21:32:30 31ZW0601_091 SERVICING YOUR OUTBOARD MOTOR Anode Replacement ANODE (stern bracket) ANODE (each side) The anodes are located on each side of the gearcase. They are made of a sacrificial material that helps to protect the outboard motor from corrosion. Replace the anodes when they have been reduced to about half their original size, or if they are crumbling. 90 Painting or coating the anodes will def eat their purpose and will lead to rust and corrosion damage to the outboard motor.
02/03/25 21:32:42 31ZW0601_092 SERVICING YOUR OUTBOARD MOTOR Propeller Replacement Removal Installation Before replacing the propeller, remove the clip from the engine stop switch to prevent any possibility of the engine being started while you are working with the propeller. Remove the cotter pin, unscrew the castle nut, remove the washer, then remove the propeller and thrust washer. 1. Install the propeller in the reverse order of removal.
02/03/25 21:32:54 31ZW0601_093 STORAGE STORAGE PREPARATION Cleaning Proper storage preparation is essential for keeping your outboard motor troublefree and looking good. The following steps will help to keep rust and corrosion from impairing your outboard motor’s function and appearance, and will make the engine easier to start when you use the outboard motor again. Wash the outside of the outboard motor with clean, fresh water, and flush the cooling system as follows.
02/03/25 21:33:06 31ZW0601_094 STORAGE GARDEN HOSE ADAPTER (optional equipment) FLUSHING CONNECTOR EXHAUST PORT 2. Screw the garden hose adapter into the flushing connector. 3. Attach a garden hose from a fresh water faucet to the garden hose adapter. 4. Turn on the fresh water supply and flush the outboard motor for at least 10 minutes. 5. After flushing, remove the garden hose adapter, and install the flush port cap.
02/03/25 21:33:18 31ZW0601_095 STORAGE Fuel Gasoline will oxidize and deteriorate in storage. Old gasoline will cause hard starting, and it leaves gum deposits that clog the fuel system. If the gasoline in your fuel tank and carburetor deteriorates during storage, you may need to have the carburetor and other fuel system components serviced or replaced.
02/03/25 21:33:33 31ZW0601_096 STORAGE #1 CARBURETOR DRAIN SCREW #2 CARBURETOR DRAIN SCREW 5. Repeat this procedure to drain #2 and #1 carburetors. 6. After all four carburetors are drained, reinstall the drain tube on #4 carburetor. DRAIN HOSE #3 CARBURETOR DRAIN SCREW #4 CARBURETOR DRAIN SCREW 3. Loosen the drain screw on #4 carburetor, allow the carburetor to drain completery, then tighten the drain screw securely. 7.
02/03/25 21:33:45 31ZW0601_097 STORAGE HOISTING THE OUTBOARD MOTOR If the outboard motor is to be removed from the boat for storage, the lifting eye (contact your authorized Honda Marine dealer to purchase) must be installed in the flywheel to attach a hoist hook. FRONT FREE BOLTS CLIPS BOLTS LOCK ENGINE COVER LOCK LEVER REAR FREE TIMING BELT COVER 2. Remove the timing belt cover by unscrewing the four cover bolts and unlatching the three clips. LOCK ENGINE COVER LOCK LEVER 1.
02/03/25 21:33:59 31ZW0601_098 STORAGE 3. Install the lifting eye in the center of the starter pulley, and tighten it securely. LIFTING EYE STARTER PULLEY HOIST HOOK LIFTING EYE 5. Disconnect the outboard motor from the boat, hoist the outboard motor, and move it to the storage area. 6. After the outboard motor is placed in storage and disconnected from the hoist, remove the lifting eye, and install the timing belt cover and engine cover. 4. Attach the hoist hook to the lifting eye.
02/03/25 21:34:17 31ZW0601_099 STORAGE STORAGE PRECAUTIONS Select a well-ventilated storage area. If possible, avoid storage areas with high humidity. If the outboard motor will be removed from the boat for storage, we recommend storing it vertically by mounting it on a stand. REMOVAL FROM STORAGE If storing a container of gasoline, such as the portable fuel tank (optional equipment), store it away from any appliance that operates with a flame, such as a furnace, water heater, or clothes dryer.
02/03/25 21:34:32 31ZW0601_100 TRANSPORTING WITH OUTBOARD MOTOR INSTALLED ON BOAT LRT and XRT Types (remote control) WITH OUTBOARD MOTOR REMOVED FROM BOAT When trailering a boat with the outboard motor attached, leave the engine in the normal running position, if possible. Use a motor support bar to prevent the outboard motor from moving while trailering the boat. Refer to the manufacturer’s instructions for using a motor support bar.
02/03/25 21:34:47 31ZW0601_101 TAKING CARE OF UNEXPECTED PROBLEMS ELECTRIC STARTER WILL NOT OPERATE 1. Check battery. Possible Cause Correction Battery connections loose or corroded. Clean and tighten battery connections. Battery discharged. Recharge battery. 2. Check fuses. Fuse(s) burnt out. Replace fuse(s) (p. 106 ). 3. Use emergency starting procedure (p. 40 ), then take outboard motor to an authorized Honda Marine dealer, or refer to the shop manual.
02/03/25 21:34:59 31ZW0601_102 TAKING CARE OF UNEXPECTED PROBLEMS ENGINE WILL NOT START Possible Cause Correction 1. Check emergency stop switch clip. Clip not inserted in stop switch. Insert clip in stop switch. 2. Check control positions. Gearshift lever or control lever not in neutral position. Shift to neutral (p. 19, 23, 26 and 29 ). Choke OPEN (tiller-handle type). Pull choke knob to CLOSED position, unless engine is warm (p. 18 ). Throttle grip not in START position (tiller-handle type).
02/03/25 21:35:18 31ZW0601_103 TAKING CARE OF UNEXPECTED PROBLEMS ENGINE WILL NOT START (continued) 3. Check fuel. 4. Remove and inspect spark plugs. 5. Take outboard motor to an authorized Honda Marine dealer, or refer to the shop manual. 102 Possible Cause Correction Out of fuel. Refuel (p. 85 ). Fuel vent closed (portable fuel tank optional equipment). Open fuel tank vent (p. 38 ). Fuel hose not primed. Squeeze priming bulb (p. 44 ). Fuel pump filter or fuel tank filter clogged.
02/03/25 21:35:29 31ZW0601_104 TAKING CARE OF UNEXPECTED PROBLEMS HARD STARTING OR STALLS AFTER STARTING 1. Check control positions. Possible Cause Correction Choke OPEN (tiller-handle type). Pull choke knob to CLOSED position, unless engine is warm (p. 18 ). Throttle grip not in START position (tiller-handle type). Turn throttle grip to START (p. 45 ). Choke and fast idle lever not raised (side-mount type). Raise choke and fast idle lever, unless engine is warm (p. 22 ).
02/03/25 21:35:44 31ZW0601_105 TAKING CARE OF UNEXPECTED PROBLEMS HARD STARTING OR STALLS AFTER STARTING (continued) 2. Check fuel. Possible Cause Correction Fuel vent closed (portable fuel tank). Open fuel tank vent (p. 38 ). Fuel hose not primed. Fuel pump filter or fuel tank clogged. Squeeze priming bulb (p. 44 ). Replace fuel filters (p. 87 ). Bad fuel; boat stored without treating or draining gasoline, or refueled with bad fuel. Drain fuel tank and carburetors (p. 94 ).
02/03/25 21:35:52 31ZW0601_106 TAKING CARE OF UNEXPECTED PROBLEMS ENGINE OVERHEATS Possible Cause Correction 1. Check water intake screens. Water intake screens clogged. Clean water intake screens. 2. Take outboard motor to an authorized Honda Marine dealer, or refer to the shop manual. Faulty thermostat or water pump. Replace or repair faulty components as necessary.
02/03/25 21:36:12 31ZW0601_107 TAKING CARE OF UNEXPECTED PROBLEMS BATTERY WILL NOT CHARGE AND ELECTRIC STARTER WILL NOT OPERATE The battery-charging circuit and the electric starter relay circuit are protected by the 30-ampere main fuse. If the main fuse burns out, the engine will not charge the battery, and the electric starter will not operate. The engine can be started using the emergency starter rope. The ignition switch is protected by the 15-ampere sub fuse.
02/03/25 21:36:27 31ZW0601_108 TAKING CARE OF UNEXPECTED PROBLEMS OIL PRESSURE INDICATOR LIGHT GOES OFF AND ENGINE SPEED IS LIMITED If the throttle is closed suddenly after full throttle operation, engine speed may drop below the specified idle rpm, and that could activate the engine protection system momentarily. LHT Type (tiller handle) (GREEN) If low oil pressure activates the engine protection system, stop the engine, check the engine oil level (p. 76 ), and add oil if needed.
02/03/25 21:36:44 31ZW0601_109 TAKING CARE OF UNEXPECTED PROBLEMS OVERHEATING INDICATOR LIGHT COMES ON AND ENGINE SPEED IS LIMITED LHT Type (tiller handle) If the engine overheats, the red indicator light will come on, and the engine protection system will limit engine speed. If you are at cruising speed, engine speed will decrease gradually. Remote-control types are equipped with a buzzer that sounds when the red indicator light comes on.
02/03/25 21:36:58 31ZW0601_110 TAKING CARE OF UNEXPECTED PROBLEMS If water is flowing from the cooling system indicator, continue idling for 30 seconds. If the cooling system is OK, the red indicator light should go off within 30 seconds, and the engine will respond normally to throttle grip or control lever operation. If there is no water flowing from the cooling system indicator, stop the engine, and tilt the outboard motor to inspect the water intake screens.
02/03/25 21:37:11 31ZW0601_111 TAKING CARE OF UNEXPECTED PROBLEMS 7. Attempt to start the engine. When cranking the engine with an open ignition circuit (spark plugs removed f rom the ignition circuit), remove the clip f rom the emergency or engine stop switch to prevent possible damage to the ignition system. If the engine fails to start, remove the spark plugs, clean and dry them, then reinstall the spark plugs and attempt to start the engine again. 5.
02/03/25 21:37:21 31ZW0601_112 TECHNICAL AND CONSUMER INFORMATION TECHNICAL INFORMATION LEFT STERN BRACKET Serial Number Locations Record the product identification number and engine serial numbers in the space provided on this page. You will need these numbers when ordering parts, and when making technical or warranty inquiries (p. 120 ). PRODUCT IDENTIFICATION NUMBER ENGINE SERIAL NUMBER The product identification number is stamped on a plate attached to the left stern bracket.
02/03/25 21:37:30 31ZW0601_113 TECHNICAL AND CONSUMER INFORMATION Carburetor Modification for High Altitude Operation At high altitude, the standard carburetor air-fuel mixture will be too rich. Performance will decrease, and fuel consumption 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 carburetors.
02/03/25 21:37:43 31ZW0601_114 TECHNICAL AND CONSUMER INFORMATION Oxygenated Fuels Some conventional gasolines are being blended with alcohol or an ether compound. These gasolines are collectively 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. If you use an oxygenated fuel, be sure it is unleaded and meets the minimum octane rating requirement.
02/03/25 21:37:52 31ZW0601_115 TECHNICAL AND CONSUMER INFORMATION Emission Control System Information The U.S. and Calif ornia Clean Air Acts Source of Emissions EPA and California regulations require all manufacturers to furnish written instructions describing the operation and maintenance of emission control systems. The combustion process produces carbon monoxide, oxides of nitrogen, and hydrocarbons.
02/03/25 21:38:04 31ZW0601_116 TECHNICAL AND CONSUMER INFORMATION Problems That May Af f ect Emissions If you are aware of any of the following symptoms, have your engine inspected and repaired by your servicing dealer. Hard starting or stalling after starting. Rough idle. Misfiring or backfiring under load. Afterburning (backfiring). Black exhaust smoke or high fuel consumption.
02/03/25 21:38:16 31ZW0601_117 TECHNICAL AND CONSUMER INFORMATION Star Label A Star label was applied to this outboard motor in accordance with the requirements of the California Air Resources Board. The Star Label means Cleaner Marine Engine This engine has been certified as a: The Symbol for Cleaner Marine Engines: Cleaner Air and Water - for healthier lifestyle and environment.
02/03/25 21:38:26 31ZW0601_118 TECHNICAL AND CONSUMER INFORMATION One Star Low Emission Two Stars Very Low Emission Three Stars Ultra Low Emission The one-star label identifies engines that meet the Air Resources Board’s 2001 exhaust emission standards. Engines meeting these standards have 75% lower emissions than conventional carbureted two-stroke engines. These engines are equivalent to the U.S. EPA’s 2006 standards for marine engines.
02/03/25 21:39:04 31ZW0601_119 TECHNICAL AND CONSUMER INFORMATION Specifications MODEL Description Code Type Overall length Overall width Overall height Transom height Weight Rated power Full throttle range Engine type Displacement Spark plug gap Starter system Ignition system Lubrication system Specified oil BF75A BBAL LRT XRT 29.9 in (760 mm) LHT 35.8 in (910 mm) 23.2 in 18.9 in (480 mm) (590 mm) 67.7 in 62.6 in (1,590 mm) (1,720 mm) 21.1 in (537 mm) 26.
02/03/25 21:39:42 31ZW0601_120 TECHNICAL AND CONSUMER INFORMATION Specifications MODEL Description Code Type Overall length Overall width Overall height Transom height Weight Rated power Full throttle range Engine type Displacement Spark plug gap Starter system Ignition system Lubrication system Specified oil BF90A BBBL LRT XRT 29.9 in (760 mm) LHT 35.8 in (910 mm) 23.2 in 18.9 in (480 mm) (590 mm) 62.6 in (1,590 mm) 67.7 in (1,720 mm) 21.1 in (537 mm) 26.
02/03/25 21:39:58 31ZW0601_121 TECHNICAL AND CONSUMER INFORMATION CONSUMER INFORMATION Warranty Service Information Or telephone: (770) 497-6400 Honda Publications 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. The Service Manager or General Manager can help. Almost all problems are solved in this way.
02/03/25 21:40:03 31ZW0601_122 INDEX Anodes ............................................................................ 37 Replacement ............................................................... 90 ARE YOU READY TO GET UNDER WAY? .......... 39 Battery .......................................................................... 112 BATTERY WILL NOT CHARGE AND ELECTRIC STARTER WILL NOT OPERATE ............................................................ 106 BEFORE OPERATION................................
02/03/25 21:40:07 31ZW0601_123 INDEX Gearshift Lever............................................................... 19 Gearshift/Throttle Control Lever LRT and XRT Types (remote control) Panel-Mount Type.................................................. 25 Side-Mount Type ................................................... 22 Top-Mount Type .................................................... 28 GEARSHIFTING AND THROTTLE OPERATION ... 61 LHT Type (tiller handle) ............................................
02/03/25 21:40:11 31ZW0601_124 INDEX PORTABLE FUEL TANK (optional equipment) ... 38, 43 Portable Fuel Tank and Filter Cleaning (optional equipment) .................................................. 89 Power Tilt Switch ........................................................... 26 Power Trim/Tilt Switch ........................................... 19, 30 Propeller Replacement ................................................... 91 REFUELING..................................................................
02/03/25 21:40:14 31ZW0601_125 INDEX TAKING CARE OF UNEXPECTED PROBLEMS... 100 TECHNICAL AND CONSUMER INFORMATION ...................................................... 111 TECHNICAL INFORMATION .................................. 111 THE IMPORTANCE OF MAINTENANCE ................ 68 Throttle Friction Knob ................................................... 19 Throttle Grip ...................................................................