Honda Outboard Motors BF25A Owner's Manual
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Honda Outboard Motors BF25A Owner's Manual

Honda Outboard Motors BF25A Owner's Manual

Honda power equipment outboard motors owner's manual
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Summary of Contents for Honda Outboard Motors BF25A

  • 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 BF25A and BF30A 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 Bf25A/30A Outboard Motors

    TYPES OF HONDA BF25A/30A OUTBOARD MOTORS It may be necessary to refer to this chart for reference purposes when reading this manual. TYPE CODE (example) S = Electric Starter Control H = Tiller Handle R = Remote Shaft Length (transom height) S = Short L = Long X = Extra Long...
  • Page 5 RIGHT STERN BRACKET PRODUCT IDENTIFICATION NUMBER Record the Product Identification Number (MN.) and the Engine Serial Number for your reference. Refer to the Product Identification Number when ordering parts, and when mak- ing technical or warranty inquiries (see page 98). IDENTIFICATION STARTER MOTOR ENGINE SkIAL...

  • Page 6: Table Of Contents

    CONTENTS 1. SAFETY SAFETY LABELS ... SAFETY INFORMATION ... 7 2. COMPONENT IDENTIFICATION.. 3. CONTROLS TILLER HANDLE TYPE Engine Start Button ... Gearshift Lever ... Choke Knob ... Throttle Grip ... Throttle Opening Indicator ... Throttle Friction Knob..Engine Stop Switch ... Emergency Stop Switch Lanyard ...
  • Page 7 Tool Kit..Anode ... 6. STARTING THE ENGINE Fuel Tank and Vent Knob ... 33 Fuel Line Connection ... 33 Starting the Engine (TILLER HANDLE TYPE) ... 35 Starting the Engine (REMOTE CONTROL TYPE) ... 39 Emergency Starting ... 42 Troubleshooting Starting Problems ...

  • Page 8: Safety

    1. SAFETY SAFETY LABELS These labels are in the locations shown. They warn you of potentia1 hazards that could seriously injure you. Read these labels carefully. CHECK 011 U”El. BEFORE !ilAUllNR S”STEN -“ONL” WITN FRESH WATEK EAC” “SE IN SM.1 WA’ICK.

  • Page 9: Safety Information

    Stop the engine immediately if any one falls overboard. Do not run the motor while the boat is near anyone in the water. Attach the emergency stop switch lanyard securely to the operator. Do not open the engine cover while the engine is running.

  • Page 10: Component Identification

    2. COMPONENT IDENTIFICATION FUEL LINE THRoTT\LE GR1P C/ONNECTOR (ANODE METAL) EXHAUST PORT PROPELLER GEAR OIL DRAIN PLUG (TILLER STARTER GRIP OIL LEVEL DIPSTICK (Recoil starter OIL FILLER CAP ,y-, INDICATOR FRICTION KNOB TER INTAKE HANDLE TYPE) OIL PRESSURE INDICATOR CHOKE KNOB EMERGENCY STOP SWITCH STOP SWITCH...
  • Page 11 2. COMPONENT ENGINE COVER --- - -----A DIPST LEVEL PLUG (ANODE METAL) I I \ EXHAUST PORT GEAR OIL DRAIN PLUG PROPELLER IDENTIFICATION OIL FILLER CAP CHOKE KNOB ‘11 PARE EMERGENCY TOP SWITCH C COOLING SYSTEM INDICATOR STERN BRACKET WATER INTAKE (REMOTE CONTROL CONTROL...
  • Page 12 2. COMPONENT IDENTIFICATION FUEL TANK PRIMER BULB VENT KNOB FUEL G\AUGE FUEL CAP FiJEL HOSE CONNECTOR (FEMALE)

  • Page 13: Controls Tiller Handle Type

    3. CONTROLS (TILLER HANDLE TYPE) Gearshift Lever GEARSHIFT ’ ’ 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...

  • Page 14: Throttle Grip

    3. CONTROLS (TILLER HANDLE TYPE) Throttle Grip THROTTLE GRIP Turn the grip clockwise or counter- clockwise to adjust the engine speed. Turning the grip in the direction shown by the arrow increases engine speed* Throttle Opening Indicator THRO’I-IXE OPENING INDICATOR The curve on the grip indicates throttle opening.

  • Page 15: Engine Stop Switch

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

  • Page 16: Oil Pressure Indicator Light

    3. CONTROLS (TILLER HANDLE TYPE) Pressure Indicator Light OIL PRESSURE INDICATOR LIGHT The green oil pressure indicator light is normally ON when the outboard motor is running. When the engine oil level is low or the engine lubrication system is faulty, the green oil pressure indicator light turns OFF.

  • Page 17: Remote Control Lever

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

  • Page 18: Neutral Release Lever

    3. CONTROLS (REMOTE CONTROL TYPE) Neutral Release Lever The neutral release lever is on the remote control lever to prevent an accidental gear engagement. The remote control lever will not engage forward or reverse gear unless the neutral release lever is pulled up. Ignition Switch + ON START...

  • Page 19: Emergency Stop Switch Lanyard

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

  • Page 20: Choke/Fast Idle Lever

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

  • Page 21: Oil Pressure Indicator Light/Buzzer

    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. (REMOTE 3. CONTROLS Overheat Indicator Light/Buzzer The red overheat indicator light turns ON and the buzzer sounds when the engine cooling system is faulty.

  • Page 22: Controls And Instruments

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

  • Page 23: Anode Metal

    Anode Metal The anode is made from a sacrificial material which helps to protect the outboard motor from corrosion. Painting or coating the INOTICE anode will lead to rust and corrosion damage to the outboard motor. 3. CONTROLS & INSTRUMENTS Cooling System Indicator COOiING SYSTEM INDICATOR...

  • Page 24: Transom Angle Adjusting Rod

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

  • Page 25: Fuel Cap/Gauge/Vent Knob

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

  • Page 26: Installation

    PLATE The anti-ventilation plate should be O-2 inches below the bottom of the boat. With the boat in the water, loaded and motor off, the anti-ventilation should be about 4 inches below the surface of the water. Running the outboard...

  • Page 27: Motor Attachment

    Before operating the boat, check the tightness of the clamp screws. Tie a rope through the hole in the stern bracket and secure the other end of the rope to the boat. This will prevent accidental loss of the motor. STERN...

  • Page 28: Engine Cover Removal Installation

    4. INSTALLATION Engine Cover Removal/Installation GINE COVER To remove, release the engine cover latch and remove the engine cover. To install, position the engine cover over the engine and hook and lock the latch. FRONT SIDE...

  • Page 29: 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 en&e damage. Recommended oil Use high-detergent, premium quality Cstroke engine oil, certified to meet or exceed U.S. automobile manufac- tures’...

  • Page 30: Fuel Level

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

  • Page 31: Fuel Recommendations

    Fuel Recommendations Use unleaded gasoline with a pump octane rating of 86 or higher. These outboard motors are 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.

  • Page 32: Oxygenated Fuels

    5. PRE-OPERATION 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 33: Propeller And Cotter Pin

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

  • Page 34: Remote Control Friction Adjustment

    Painting or coating the anode will lead to rust and corrosion damage to the outboard motor. The following materials should be kept with the boat: Owner’s Manual. 2. Tool Kit. 3. Spare engine oil, spark plugs, propeller, propeller cotter pins and nut.

  • Page 35: Fuel Tank And Vent Knob

    Fuel Tank and Vent Knob The fuel tank must be properly se- cured in the boat. This will 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 36: Fuel Hose Connector

    6. 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 the outside. toward Be sure the fuel hose connector is snapped in place. securely 1 NOTICE 1 If the outboard end fuel hose connector is forcibly in-...

  • Page 37: Engine Stop Switch

    If the operator does attach the emergency 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.

  • Page 38: Choke Knob

    6. STARTING THE ENGINE (TILLER THROTTiE GRIP 3. Align the engine start symbol ” Q, ” on the throttle grip with the pointer ” ) ” on the tiller handle. HANDLE TYPE) CHOKE KNOB 4. When the engine is cold or ambient temperature is low pull the choke knob.
  • Page 39 Electric Starter (Electric starter Type) START BUTTON 6. Press the start button and start the engine. The starter motor consumes a large amount of current. Do not run it continuously for more than 5 seconds at a time. If the engine does not start within 5 seconds wait at least 10 seconds before using the starter motor again.
  • Page 40 6. STARTING THE ENGINE (TILLER COOLING SYSTEM INDICATOR 8. After the engine starts, verify water is flowing through the cooling system by monitoring the cooling system indicator. The amount of water coming out of the cooling system indicator will vary due to thermostat operation. Stop the engine if water does not come out of the cooling system indicator or if you see steam.

  • Page 41: Starting The Engine (Remote Control Type)

    THE ENGINE (REMOTE EMERGENCY If the ooerator 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 properly attach the lanyard before starting the motor.
  • Page 42 6. STARTING THE ENGINE (REMOTE CHOKElFAST 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 43: Cooling System Indicator

    6. STARTING COOLING SYSTEM INDICATOR 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 44: Emergency Starting

    6. STARTING THE ENGINE Emergency Starting ENGINE COVER LATCHES If the recoil starter and electric starting system will not start the engine the engine can be started by using the emergency starter rope from the tool kit. 1. Release the engine cover latch then remove the engine cover.

  • Page 45: Starting The Engine

    GEARSHIFT LEVER (TILLER HANDLE TYPE) 5. Depending on what type of outboard motor you have, move the gearshift lever or the control lever to the N (neutral) position. 6. STARTING THE ENGINE (neutral) ‘YJ (REMOTE CONTROL TYPE) ENGINE STOP SWITCH EMERGENCY STOP SWITCH STOP SWITCH...
  • Page 46 6. STARTING THE ENGINE IGNITIONKEY EMERGENCY CLIP 7. If your outboard motor is a remote control type, turn the ignition key to the ON position. Engage the emer- gency stop switch clip, located at one end of the emergency stop switch lanyard, with the emergency engine stop switch.
  • Page 47 CHOKE KNOB (REMOTE CONTROL TYPE) If the fuel system is working properly, it should only be necessary to pull the engine 1 or 2 times with the choke knob out. ENGINE START SYMBOL POINkER THRO’ITLE GRIP (TILLER HANDLE TYPE) 9. On the tiller handie type align the engine start symbol ”...
  • Page 48 Lock the engine cover latches. Attach the emergency stop switch lanyard securely to the operator and return to the closest boat landing. Contact your closest authorized Honda Marine dealer and have the outboard motor and the electrical system checked.

  • Page 49: Troubleshooting Starting Problems

    Troubleshooting Starting Problems SYMPTOM POSSIBLE CAUSE Starter motor 1. Shift lever not in neutral doesn’t turn position. over. 2. Blown fuse. 3. Weak battery. I. Shift lever not in neutral Emergency starting proce- position. dure will not start the engine 2.

  • Page 50: Operation Break-In Procedure

    (100% throttle opening). Do not run the outboard motor at full throttle for more than 5 minutes at a time. boats that plane easily, bring the boat up on plane then reduce the throttle opening to the specified break-in settings called out above.

  • Page 51: Gear Shifting

    Gear Shifting THROTTLE GRIP POINTER Gearshift lever has 3 positions: FORWARD, NEUTRAL, and REVERSE. An indicator at the base of the gearshift lever aligns with the letters F, and R on the motor pan. 1. Align the pointer on the tiller han- SLOW dle with the position on the...

  • Page 52: Steering

    Move the tiller Move the tiller handle to the letk. handle to the right. The tiller handle is moved in the oppo- site direction in which you want the boat to turn. HANDLE TYPE) Cruising THROTTb GRIP With the gearshift lever in the F (for-...

  • Page 53: Gear Shifting

    (reverse) to engage the desired gear. 7. OPERATION (REMOTE (neutral) (forward) 30” I Moving the control lever further from 30” will increase throttle opening and boat speed. CONTROL TYPE) (neuial) (reverse) 1 30” MAXIMUM control lever will not move unless...

  • Page 54: Cruising

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

  • Page 55: Tilt Lever

    \ PUSH ENGINE STOP SWITCH 1 1. Stop the boat. 2. Move the gearshift lever or control lever to the N (neutral) position and stop the engine. 7. OPERATION (neir al)
  • Page 56 Use the engine cover grip and raise the motor to either the 30”, 45” or 75” tilt position. With the motor tilted up: Operate the boat at low speed. Do not operate in reverse. Monitor the cooling system indicator for water discharge. Be...
  • Page 57 CORRECT GIVES MAXIMUM PERFORMANCE Motor angle controls boat trim. The optimum boat trim is when the boat is parallel with the water. If the boat is not parallel with the water, adjust by changing the position of the transom angle adjusting rod (refer to page 22).

  • Page 58: 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 59: Engine Oil Pressure And

    Engine Oil Pressure and Overheat <Tiller Handle type> If the engine oil pressure drops, the warning system could be activated and the green oil pressure indicator light will turn OFF. If the engine overheats, the warning system could be activated and the engine speed will decrease gradually.
  • Page 60 30 seconds, the system is normal. 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 or Honda Outboard Motor dealers.

  • Page 61: Over-Rev Limiter

    Over-Rev Limiter This outboard motor is equipped with an engine over-rev limiter which activates when the engine speed increases excessively. The over-rev limiter can be activated while cruising, or when ventilation occurs during a sharp turn. When the over-rev limiter is activated: 1.

  • Page 62: High Altitude Operation

    7. OPERATION High Altitude Operation At high altitude, the standard carburetor air-fuel mixture will be too rich. Performance will decrease? and fuel con- sumption will increase. A very rich mixture will also foul the spark plug and cause hard starting. High altitude performance can be improved by specific modifi- cations to the carburetors.

  • Page 63: Throttle Grip

    Emergency Engine Stop ENGINE STOP SWITCH EMERGENCY STOP SWITCH CLIP SWITCH LANYARD Disengage the emergency stop switch clip from the engine stop switch by pulling the emergency stop switch lan- yard. It is a good idea to stop the engine with the emergency stop switch lanyard from switch is...
  • Page 64 8. STOPPING THE ENGINE (TILLER HANDLE TYPE) ENGIN’E STOP SWITCH 2. Push the engine stop switch until the engine stops.

  • Page 65: Remote Control Type

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

  • Page 66: Transporting

    9. TRANSPORTING Tkailering STEERING FRICTION When trailering or transporting the boat with the motor attached, it is recom- mended that the motor remain in the normal run position. Tighten the steering friction adjuster securely to stop the motor’s side to side movement.

  • Page 67: Cleaning And Flushing

    WASH PLUG (flush plug) Thoroughly clean and flush the out- board motor with fresh water after operating in dirty or salty water. Flush Kit (optional part) 1. Wash the outside of the outboard motor with clean, fresh water. 2. Remove the wash plug and sealing washer from the WASH plug hole in the gear case.
  • Page 68 10. CLEANING AND FLUSHING CO6LING SYSTEM INDICATOR 7. Start the engine. Monitor the cool- ing system indicator. Stop the engine if water does not come out of the cooling system indicator and check the fresh water supply. If the fresh water supply is insufficient it may be necessary to temporarily cover the three water intakes with duct tape.

  • Page 69: Maintenacne

    THE IMPORTANCE OF MAINTENANCE Good maintenance is essential for safe, economical, and trouble-free operation. It will also help reduce pollution. nance, or failure to correct a problem before operation, cause a malfunction in which you can be seriously hut-t or killed.

  • Page 70: Emission Control System Information

    11. MAINTENANCE Safety Precautions Make sure the engine is off before you begin any maintenance or repairs. This will eliminate several potential hazards: -Carbon monoxide poisoning from engine exhaust. Be sure there is adequate ventila- tion whenever you operate the engine.
  • Page 71 The U.S. Clean Air Acts EPA regulations require all manufactur- ers to furnish written instructions describing the operation and mainte- nance of emission control systems. The following instructions and proce- dures must be followed in order to keep the emissions from your Honda engine within the emission standards.
  • Page 72 11. MAINTENANCE Replacement Parts The emission control systems on your Honda engine were designed, built, and certified to conform with EPA emission regulations. We recommend the use of genuine Honda parts whenever you have maintenance done. These original-design replacement parts are manufactured to the same standards as the original parts, so you can be confident of their performance.

  • Page 73: Tool Kit And Spare Parts

    Tool Kit and Spare Parts The following tools and spare parts are supplied with the outboard motor for maintenance, adjustment, and emergency repairs. TOOL KIT 10 x 12 WRENCH WRENCH FLAT SCREWDRIVER PHILLIPS SCREWDRIVER SCREWDRIVER HANDLE OIL CHECK SCREWDRIVER 11. MAINTENANCE PLIERS TOOL BAG 18 x 19...

  • Page 74: Maintenance Schedule

    11. MAINTENANCE MAINTENANCE SCHEDULE Use only genuine HONDA parts or their equivalent Replacement parts which are not of equivalent REGULAR SERVICE PERIOD (3) Perform at every indicated month or operating hour intervals, whichever comes first. ITEM Engine oil Check level Change Engine oil filter Change...
  • Page 75 11. MAINTENANCE (Replace if necessary) 0 Emission-related items (1) Lubricate more frequently when used in salt water. (2) These items should be serviced by an authorized Honda Marine dealer, unless the owner has the proper tools and is mechanically proficient. See the Honda Shop Manual.

  • Page 76: Engine Oil

    11. MAINTENANCE Engine Oil Engine oil is a major factor affecting engine performance and service life. Oil check interval: Each use. Oil change interval: After the first 20 hours, then every 100 hours. (Refer to the maintenance schedule page 72). OIL CAPACITY: I .7 US qt (1.6 lit) .
  • Page 77 2. Remove the engine oil drain bolt 12 mm wrench washer using a and drain the engine oil. 3.. Install a new sealing washer on the tighten the bolt drain bolt and securely. UPPER -.I 4. Refill to the upper limit mark on the oil level dipstick with the recom- mended oil.

  • Page 78: Gear Oil

    11. MAINTENANCE Gear Oil Oil check interval: Every 100 hours. Oil change interval: After the first 20 hours, then every 200 hours. (Refer to the maintenance schedule page 72). OIL CAPACITY: 0.33 US qt. (0.29 lit) Recommended oil: Outboard motor SAE 90 hypoid gear oil API Service Classification (GL-4 or GL-5).

  • Page 79: Spark Plugs

    Gear Oil Change 1. Position the outboard motor verti- cally. 2. Remove the level plug and drain plug to drain the oil. Inject oil through the drain plug hole until it starts flowing out through the level plug hole. Use new sealing washers and reinstall the level plug first and then the drain plug securely.
  • Page 80 11. MAINTENANCE 0.024-0.028 in (0.6-0.7 mm) 6. Measure the plug gaps with a feeler gauge. The gaps should be 0.024-0.028 in (0.6-0.7 mm). Correct as necessary by carefully bending the side elec- trode. 7. Thread the plugs in by hand to pre- vent cross threading.

  • Page 81: Battery (Not Included)

    (-) battery cable. Tighten the cable nuts securely. 3. Coat battery terminals and ca- ble ends with marine anticor- rosion grease. 11. MAINTENANCE 4. Put the cover on the battery box and secure the battery box to the boat.
  • Page 82 11. MAINTENANCE Receptacle (Equipped type only) DCRECEPTACLE TO ACCESS0 Refer page 79 for battery requirements and additional battery handling proce- dures. Batteries produce explosive gases. Keep sparks, flames, and cigarettes away. To prevent the possibility of creating a spark near the battery, connect the charging cord first to the battery and then to the outboard motor;...

  • Page 83: Lubrication

    Lubrication Lubrication interval: After the first 20 hours, then every 100 hours. (Refer to the maintenance sched- ule page 72.) Apply marine anticorrosion grease to the following parts: THROTTLE REEL- CLAMP SCREWS TILT SHAFT 11. MAINTENANCE...
  • Page 84 11. MAINTENANCE ADJUSTING PROPELLER SHAFT...

  • Page 85: Engine Fuel Filter

    Engine Fuel Filter FUEL’FILTER The engine fuel filter is located under the engine cover between the fuel cou- pling and the fuel pump. Water or sediment accumulated in the fuel filter can cause loss of power or hard start- ing. Check interval: Every 100 hours (Refer to the maintenance schedule page 73).

  • Page 86: Fuel Hoses

    11. MAINTENANCE FUEL’FILTER 3. Lift the fuel filter up from the engine under case. 4. Check the fuel filter for water accu- mulation or sediment. If no water or sediment are found, reinstall the fuel filter properly. FUEL HOSES FUEL H&X CLIPS Change 1.

  • Page 87: Fuel Tank And Filter

    4. Securely connect the fuel hose connector to the outboard motor (refer to page 33). 5. Prime the engine using the primer bulb (refer to page 34). Check for fuel leaks. Repair any fuel leaks if neces- 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 88: Fuse Replacement

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

  • Page 89: Propeller

    Propeller PROPELLER If the propeller is damaged, replace it as follows: COTTER PIN CASTLE NUT LAIN WASHER ARINE GREASE THRUST WASHER Removal: Remove the cotter pin then remove the 14 mm castle nut, 15 mm plain washer, propeller and thrust washer. 11.

  • Page 90: Submerged Motor

    11. MAINTENANCE Submerged Motor A submerged motor must be serviced immediately after it is recovered from the water in order to minimize corro- sion. Immediately take the outboard motor to the closest authorized Honda Marine or Honda Outboard Motor dealer or if you are far from a dealership, proceed as follows: 1.
  • Page 91 5. Change the engine oil (refer to page 72). 6. Put a teaspoon of engine oil into each spark plug hole, then rotate the engine using the pull starter rope or recoil starter several times to lubri- cate the inside of the cylinders. Reinstall the spark plugs.

  • Page 92: Storage

    12. STORAGE For longer service life of the outboard motor, have your outboard motor serviced by an authorized Honda Marine or Honda Outboard Motor dealer before storage. If you are unable take the motor to -your dealer, proceed as follows: Draining the Carburetors Be careful not to spill gasoline.
  • Page 93 Outboard Motor Position Transport and store the motor either vertically or horizontally, as shown above. Store the outboard motor in a well-ventilated area free from direct sunlight and humidity. Vertical transport or storage: Attach the stem bracket to stand. CASE PROTiXTORS Horizontal transport or storage: Rest the motor on the case protectors.

  • Page 94: Troubleshooting

    13. TROUBLESHOOTING (1) Engine does not start. Fuel Fuel is not fed to carburetor. carburetor. Fue1 Electrical - Insufficient - Sparks across - sparkplug kw sp=b -Normal sparks . No sparks - There is no gasoline across spark in fuel tank. Vent knob is not open or Plug gap vent clogged.
  • Page 95 (2) Engine starts but immediately stops. Engine some times stops while cruising. Fuel No gasoline in fuel tank. There is gasoline - in fuel tank. Engine overheats Normal sparking Water is mixed with gasoline. Vent knob is not open or vent is clogged. Fuel filter is clogged.

  • Page 96: Specifications

    14. SPECIFICATIONS MODEL Description Code Short shaft: BAJS Overall length Overall width Overall height 46.85 in (I.190 mm) Transom height 16.97 in (43 I mm) Dtv weieht 147.7 lb (67 kg) Rated power Full throttle range Engine type Displacement Spark plug gap Starter svstem Ignition system Lubrication system...
  • Page 97 MODEL Description Code Shortshaft: BAJS Type Oil capacity Cooling system Exhaust system Spark plugs Fuel pump Fuel Tank capacity Gear change Steering angle Transom angle Specifications are subject to change without notice. BF25A Long shaft: BAJL I .7 Us qt (I .6 lit) When oil filter is not replaced Engine: 2.0 Us qt (1.9 lit) When oil filter is replaced Gear case: 0.30 Us at (0.29 lit)
  • Page 98 14. SPECIFICATIONS 1 MODEL Description Code ‘. Type Overall length Overall width Overall height 46.85 in (1,190mm) 1 Transom height 1 16.97 in (431 mm) Dry weight 147.7 lb (67 kg) Rated power Full throttle range 1 Engine tvoe I Disolacement Spark plug gap Starter system I Ignition svstem...
  • Page 99 MODEL Description Code Oil capacity Cooling system Exhaust system Spark plugs Fuel pump Fuel Tank capacity Gear change Steering angle Transom angle change without notice. Specifications are subject to BF30A Short shaft: BAWS Engine: 1.7 Us qt (I .6 lit) When oil filter is not replaced 2.0 Us qt (1.9 lit) When oil filter is replaced Gear case: 0.30 Us qt (0.29 lit) Water cooling with thermostat...

  • Page 100: Warranty & Service

    15. WARRANTY SERVICE Warranty Service Information Servicing 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 dealereship’s management.
  • Page 101 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 102: Wiring Diagram

    16. WIRING DIAGRAM TILLER HANDLE TYPE (with recoil starter)
  • Page 103 16. WIRING DIAGRAM TILLER HANDLE TYPE (with electric r------- ------- BF25A outboard BF30A outboard starter)

  • Page 104: Remote Control Type

    REMOTE CONTROL TYPE -------7 BF25A outboard : --B-F% &.,ard 16. WIRING DIAGRAM 00302-a,-7800...

  • Page 105: Index

    17. INDEX Anode Metal ... Battery (not included) ... Break-in Procedure ... Choke Knob ... Choke/Fast Idle Lever..CLEANING AND FLUSHING ... 65 ... 8 COMPONENT IDENTIFICATION (common) ... 20 CONTROLS & INSTRUMENTS CONTROLS TILLER HANDLE TYPE ... REMOTE CONTROL TYPE ... Cooling System Indicator ...
  • Page 106 Oil Pressure Indicator Light..Oil Pressure Indicator Light/Buzzer ... 19 Other Checks ... Over-Rev Limiter..Overheat Indicator Light/Buzzer ... 19 Oxygenated Fuels ... PRE-OPERATION CHECKS ... 27 Propeller and Cotter Pin..3 1, 87 Remote Control Friction Adjustment ... Lever ...

This manual is also suitable for:

Outboard motors bf30aMarine bf25aMarine bf30a

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