Honda BF25A Owner's Manual
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Honda BF25A Owner's Manual

Honda BF25A Owner's Manual

Honda outboard motor
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  • Page 2 The information and specifications included in this publication were in effect at the time of approval for printing. Honda Motor Co., Ltd. reserves the right, however, to discontinue or change specifications or design at any time without notice and without incurring any obligation whatever.
  • Page 3 Congratulations on your selection of a We suggest you read the warranty policy to fully understand its coverage and your Honda outboard motor. We are certain responsibilities of ownership. The you will be pleased with your purchase of one of the finest outboard motors on warranty policy is a separate document the market.
  • Page 4 INTRODUCTION You will find important safety information a variety of forms, including: A FEW WORDS ABOUT SAFETY Safety Labels - on the outboard motor. Your safety and the safety of others are very important. And using this outboard . Safety Messages - preceded by a safety alert symbol A and one of three signal motor safely is an important responsibil- words, DANGER, WARNING, or CAUTION.
  • Page 5 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 S = Electric Starter Control H = Tiller Handle R = Remote Shaft Length (transom height)
  • Page 6 IDENTIFICATION NUMBERS STARTER MOTOR RIGHT STERN BRACKET PRODUCT IDENTIFICiTION NUMBER ENGINE SERIAL NUMBER Record the Product Identification The Product Identification Number is Number (R1.N.) and the Engine Serial stamped on a plate and attached to the Number for your reference. Refer to right stem bracket.

  • Page 7: Table Of Contents

    CONTENTS CONTROLS & INSTRUMENTS (common) 1. OUTBOARD MOTOR SAFETY ....7 Tilt Lever ..............IMPORTANT SAFETY INFORMATION Trim Tab..............SAFETY LABEL LOCATIONS ....... 9 Anode Metal ............... 2. COMPONENT IDENTIFICATION ......10 Cooling System Indicator........... 23 3. CONTROLS Water Intakes..
  • Page 8 CONTENTS 8. STOPPING THE ENGINE Tool Kit ..............TILLER HANDLE TYPE ........63 Anode ............... REMOTE CONTROL TYPE ........65 6. STARTING THE ENGINE ............. Fuel Tank and Vent Knob .......... 35 9. TRANSPORTING 10. CLEANING AND FLUSHING ......... 67 Fuel Line Connection ..........

  • Page 9: Outboard Motor Safety

    Operator Responsibility Flotation Device) while on the boat. INFORMATION It is the operator’s responsibility to Honda BF25A and BF30A outboard provide the necessary safeguards to Familiarize yourself with all laws and motors are designed for use with boats protect people and property. Know...
  • Page 10 1. OUTBOARD MOTOR SAFETY Refuel With Care Carbon Monoxide Hazard Gasoline is extremely flammable, and Exhaust gas contains poisonous carbon gasoline vapor can explode. Refuel monoxide. Avoid inhalation of exhaust outdoors, in a well-ventilated area, gas. Never run the engine in a closed with the engine stopped.

  • Page 11: Safety Label Locations

    1. OUTBOARD MOTOR SAFETY SAFETY LABEL LOCATIONS These labels are in the locations shown. They warn you of potential hazards that could seriously injure you. Read these labels carefully. FLAMMABLE CONTAIN LEAD ANTI KNMX aypaJNs PUCE lRANSM,SS,ON IN nE”mAl BEFORE STARTING.

  • Page 12: Component Identification

    2. COMPONENT IDENTIFICATION (TILLER HANDLE TYPE) STARTER GRIP OIL LEVEL DIPSTICK FUEL LINE OIL PRESSURE INDICATOR LIGHT ENGINE DRAIN SCREW ---. Irl\ , “R THRdTTLE FRICTION KNOB \ --. ENGINE START (Electric starter type) EtiERGENCY STOP SWITCH TAL) LANYARD EMERGENCY STOP SWITCH WATER INTAKE...
  • Page 13 2. COMPONENT IDENTIFICATION (REMOTE CONTROL TYPE) CONTROL NEUTRAL ENGINE COVER OIL FILLER LEVER CHOKE KNOB , DIPSTICK SPARE EMERGENCY STOP SWITCH COOLING TILT SYSTEM LEVER ADJUSTING’ INDICATOR Ill L!trsEAn _..---.-- A“UPT jiILZ&. !-NUN, OIL GEAR OIL LEVEL PLUG’r-fiy& i;i;;ii N BOLT 1 TAB DE METAL) EM\ERGENCY...
  • Page 14 2. COMPONENT IDENTIlFICATION VENT KNOB FUEL GAUGE FUEL T FUEL FUEL HOSE CONNECTOR (FEMALE) PRIMER BULB...

  • Page 15: Controls Tiller Handle Type

    3. CONTROLS (TILLER HANDLE TYPE) Engine Start Button (Electric Starter Gearshift Lever Choke Knob Type) (reverse) ---/ /---- ’ ’ LEVER CHbKE KNOB BUTTON Move the gearshift lever to the N There are three gearshift lever posi- When the engine is cold, pull the (neutral) position before starting.

  • Page 16: Throttle Grip

    3. CONTROLS (TILLER HANDLIE TYPE) Throttle Grip Throttle Opening Indicator Throttle Friction Knob THROTTLE OPENING INDICATOR THRO’ITLE GRIP RELEASE Turn the grip clockwise or counter- The curve on the grip indicates throttle Use the throttle friction knob to set the clockwise to adjust the engine speed.

  • Page 17: Engine Stop Switch

    3. CONTROLS (TILLER HANDLE TYPE) Engine Stop Switch Emergency Stop Switch Lanyard SPARE EMERGENCY ENGINE STOP SWITCH STOP SWITCH CLIP PUSH EMERGENCY STOP SWITCH CLIP EMERGENCY STOP SWITCH LANYARD Push the engine stop switch to stop the The emergency stop switch lanyard is Attach the emergency stop switch lan- engine.

  • Page 18: Oil Pressure Indicator Light

    3. CONTROLS (TILLER HANDLE TYPE) Recoil Starter Oil Pressure Indicator Light ,a ’ ’ STARTER GRIP ’ (Recoil starter type) OIL PRkSURE INDICATOR LIGHT The green oil pressure indicator light is Pull the starter grip to start the engine. Set the gearshift lever in the N (neutral) normally ON when the outboard motor position before starting.

  • Page 19: Remote Control Lever

    3. CONTROLS (REMOTE CONTROL TYPE) Remote Control Lever (NEUhAL) OPENING THROTTLE The remote control lever controls gear REMOTE CONTROL LEVER selection and throttle opening posi- F (forward): R (reverse): tions. Moving the lever to the F position Moving the lever to the R position It is necessary to pull up the neutral (approximately 30”...

  • Page 20: Neutral Release Lever

    3. CONTROLS (REMOTE CONTROL TYPE) Neutral Release Lever Ignition Switch + ON START To run the engine after starting (the battery will discharge if the key is left in this position with the engine not running). To stop the engine (IGNITION OFF).

  • Page 21: Emergency Stop Switch Lanyard

    3. CONTROLS (REMOTE CONTROL TYPE) Emergency Stop Switch Lanyard EMER\GENCY STOP ’ SPARE EMERGENCY SWITCH CLIP SWITCH LANYARD STOP SWITCH CLIP The emergency stop switch lanyard is The emergency engine stop switch A spare emergency stop switch clip is should not he used to normally stop provided to stop the engine immedi- provided on the remote control box.

  • Page 22: Choke/Fast Idle Lever

    3. CONTROLS (REMOTE CONTROL TYPE) N (neutral) Manual Choke Knob Choke/Fast Idle Lever CHOKE XIMUM FAST IDLE LOWEST POSITION AST IDLE LEVER CHOkE KNOB Lift and hold the choke/fast idle lever A manual choke knob is provided on The choke/fast idle lever provides two up fully, this will provide a rich fuel the right side of the motor which can functions:...

  • Page 23: Oil Pressure Indicator Light/Buzzer

    3. CONTROLS (REMOTE CONTROL TYPE) Oil Pressure Indicator Light/Buzzer 1 Overheat Indicator Light/Buzzer The green oil pressure indicator light The red overheat indicator light turns turns OFF and the buzzer sounds ON and the buzzer sounds when the when the oil level is low and/or the engine cooling system is faulty.

  • Page 24: Controls & Instruments

    3. CONTROLS dk INSTRUMENTS (common) Tilt Lever Trim 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 25: Anode Metal

    3. CONTROLS & INSTRUMENTS (common) Anode Metal Water Intakes Cooling System Indicator Waier Intakes COOiING SYSTEM INDICATOR The anode is made from a sacrificial The cooling system is monitored here The engine cooling water is drawn material which helps to protect the to make sure cooling water is circulat- into the water pump through these outboard motor from corrosion.

  • Page 26: Transom Angle Adjusting Rod

    3. CONTROLS & INSTRUMENTS (common) Transom Angle Adjusting TRANSOM ANGLE TO CHANGE ADJUSTING UNLOCKED POSITION I --- . --A’ TO LOCK LOCKED POSITION TRANSOM ANGLE ADJUSTING The transom angle adjusting rod is som, lower the motor and operate the boat at full speed. If the bow is exces- used to adjust the motor angle to sively low stop the boat and motor.

  • Page 27: Fuel Cap/Gauge/Vent Knob

    3. CONTROLS & INSTRUMENTS (common) Before transporting or storing the fuel Fuel Cap/Gauge/Vent Knob Over-Rev Limiter tank turn the vent knob fully clock- This outboard motor is equipped with VENT KNOB wise to the closed position. an engine over-rev limiter which limits the maximum engine rpm.

  • Page 28: Installation

    Three outboard motor transom heights O-2 inches below the bottom of the boat. are available. Match your boats tran- The BF25A/30A must be installed on With the boat in the water, loaded and som height to the outboard motor transoms which have the following motor off, the anticavitation plate should transom height shown below.

  • Page 29: Motor Attachment

    This end of the rope to the boat. This will modification should be made by your prevent accidental loss of the motor. authorized Honda Marine dealer. For battery handling and installation information refer to pages 83.

  • Page 30: Engine Cover Removal Installation

    4. INSTALLATION Engine Cover Removal/Installation UNLAT FRONT SIDE 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.

  • Page 31: Pre-Operation Checks

    SAE low-30 is recommended for the oil registers near or below the (refer to page 78 for oil capacity, (BF25A). general, all-temperature use lower limit mark, remove the oil filler replacement interval and procedure).

  • Page 32: Fuel Level

    5. PRE-OPERATION CHECKS Fuel Ixvel VENT KNOB SAFE FILL LEVEL 9 I c FUEL Check the fuel gauge and refill the Refilling tank to tbe SAFE FILL level mark if Remove the fuel tank from the boat extremely flammable, and gaso- necessary.

  • Page 33: Fuel Recommendations

    If spark knock or pinging occurs at a steady engine speed, under normal load, change brands of gasoline. If spark knock or pinging persists, see an authorized Honda Marine dealer. Running the engine with persistent spark knock or pinging can cause engine damage.

  • Page 34: Oxygenated Fuels

    5. PRE-OPERATION CHECKS Oxygenated Fuels (methyl or wood alcohol) 5% by volume METHANOL Some conventional gasolines are being blended with alco- You may use gasoline containing up to hol or an ether compound. These gasolines are collec- 5% methanol by volume, as long as it tively referred to as oxygenated fuels.

  • Page 35: Propeller And Cotter Pin

    Adjust the steering friction adjuster so needs replacement use only a new outboard motor with a damaged pro- that a slight amount of drag is felt. The genuine Honda stainless steel cotter peller. steering should move smoothly and pin. Carrying a spare propeller, propeller freely.

  • Page 36: Remote Control Friction Adjustment

    5. PRE-OPERATION CHECKS 3. Tool Kit Remote Control Friction Adjustment Other Checks STARTER ROPE 0 UaII WRWCH ” c> FLAT SCREWDRIVER PLIERS TO INCREASE PHILLIPS SCREWDRIVER SCREWDRIVER HANDLE !=-a OIL CHECK SCREWDRIVER FRICTION Replace the anode when it has been Check the following items: Operate the remote control lever into visibly reduced in size.

  • Page 37: Starting The Engine

    6. STARTING THE ENGINE Fuel Tank and Vent Knob Fuel Line Connection FUEL HOSE VENT KNOB -----v (FUEL TANK END) The fuel tank must be properly se- 1. Open the fuel tank vent by tum- Inspect the fuel hose, and the O-ring cured in the boat.
  • Page 38 6. STARTING THE ENGINE FUEL HOSE CONNECTOR PRIMER BULB 3. Hold the primer bulb so that the 2. Connect the fuel hose connector to If the outboard endfuel hose outlet end is higher than the inlet end. the outboard motor. Install the connector is forcibly installed in the The arrow on the primer bulb points outboard end fuel hose connector...

  • Page 39: Starting The Engine (Tiller Handle Type)

    6. STARTING THE ENGINE (TILLER HANDLE TYPE) ENGINE STOP 1. Engage the emergency stop switch clip located at one end of the emer- GEAR SHIFT LEVER gency stop switch lanyard with the engine stop switch. Attach the other end of the emergency stop switch lanyard securely to the operator.
  • Page 40 6. STARTING THE ENGINE (TILLER HANDLE TYPE) STARTER GRIP CHOKE KNOB THROTTiE GRIP 5. Pull the starter rope slowly until a 4. When the engine is cold or ambient 3. Align the engine start symbol resistance is felt, then pull briskly. ”...
  • Page 41 6. STARTING THE ENGINE (TILLER HANDLE TYPE) Electric Starter (Electric starter Type) START BUTTON THROTTLE GRIP CHOKE kNOB 7. If it was necessary to use the choke knob to start the 6. Press the start button and start the engine, slowly return it to its initial position. Turn the engine.
  • Page 42 Check the water intake not turn ON, contact your closest authorized Honda Marine screens and the cooling system indicator discharge port and or Honda Outboard Motor dealer.

  • Page 43: Starting The Engine (Remote Control Type)

    6. STARTING THE ENGINE (REMOTE CONTROL TYPE) EMERGENCY SPARE EMERGENCY STOP SWITCH CLIP EhERiENCY STOP SWITCH CLIP A spare emergency stop switch clip is NOTICE 1 The propeller must be If the operator does provided on the remote control box. lowered into the water.
  • Page 44 6. STARTING THE ENGINE (REMOTE CONTROL TYPE) MAXIMUM FAST CHOKE/FAST IDLE LEVER 3. When the engine is cold or the 4. Hold the choke/fast idle lever in running. This can damage the starter ambient temperature is low, lift the position, turn the ignition key to the motor andjlywheel.
  • Page 45 Check the water intake turn ON, contact your closest authorized Honda Marine screens and the cooling system indicator discharge port dealer.

  • Page 46: Emergency Starting

    6. STARTING THE ENGINE Emergency Starting 6 Y 22 mm HOLTS ..I. r..r., NEUTRAL START 6x22mm CABLE ENGINE COVER WditiERS FLYWHEEL &%‘ER LATCHES (Recoil starter type) (Electric starter type) If the recoil starter and electric starting 3. Move the gearshift lever to F 2.
  • Page 47 6. STARTING THE ENGINE (neutral) ENGINE STOP SWITCH EMERGENCY STOP SWITCH GEARSHIFT LEVER STOP SWITCH STOP SWITCH LANYARD (REMOTE CONTROL TYPE) (TILLER HANDLE TYPE) 6. If your outboard motor is a tiller 5. Depending on what type of outboard handle type, engage the emergency motor you have, move the gearshift stop switch clip, located at one end lever or the control lever to the N...
  • Page 48 6. STARTING THE ENGINE IGNITION EMERGENCY SPARE EMERGENCY CHOKE‘KNOB STOP SWITCH STOP SWITCH CLIP (TILLER HANDLE TYPE) CLIP 8. If the engine is cold or the ambient spare emergency stop switch clip is 7. If your outboard motor is a remote temperature is low, pull the manual control type, turn the ignition key to provided on the remote control box.
  • Page 49 6. STARTING THE ENGINE CHOKE/FAST ENGINE START,SYMBOL ‘ER POIN-TER THRO’ITLE GRIP CHOKE KNOB (TILLER HANDLE TYPE) (REMOTE CONTROL TYPE) (REMOTE CONTROL TYPE) = 9. On the tiller handle type align the If the fuel system is working properly, it engine start symbol ” QI ” on the should only be necessary to pull the throttle grip with the painter ”...
  • Page 50 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 51: Troubleshooting Starting Problems

    6. STARTING THE ENGINE Troubleshooting Starting Problems SYMPTOM POSSIBLE CAUSE REMEDY Starter motor 1. Shift lever not in neutral 1. Set shift lever in neutral doesn’t turn position. position. over. 2. Blown fuse. 2. Replace fuse. (refer to page 89) 3.

  • Page 52: Operation

    7. OPERATION Break-in Procedure Next 60 minutes: Break-in period 10 hours Run the outboard motor up to maxi- Break-in operation allows the moving mum of 4,000 to 5,000 rpm or 50% parts to wear-in evenly and thus to 80% throttle opening. Short ensures proper performance and bursts of full throttle are acceptable longer outboard motor life.

  • Page 53: Tiller Handle Type Gear Shifting

    7. OPERATION (TILLER HANDLE TYPE) Gearshift lever has 3 positions: The throttle mechanism is designed to 2. Put the tilt lever in the RUN position FORWARD, NEUTRAL, and to prevent the outboard motor from limit the throttle grip travel when REVERSE.

  • Page 54: Steering

    7. OPERATION (THLLER HANDLE TYPE) Cruising Steering LEFT TURN RIGHT TURN Move the tiller Move the tiller handle to the right. handle to the left. RELEASE THROTTb GRIP To set the throttle at a steady speed, With the gearshift lever in the F (for- The tiller handle is moved in the oppo- turn the throttle friction knob clock- ward) position, turn the throttle grip...

  • Page 55: Remote Control Type Gear Shifting

    7. OPERATION (REMOTE CONTROL TYPE) Gear Shifting (neutral) (neutral) gorward) 30” ) (reverse) 30” CONTROL- 1 LEVER NEUTRAL RELEASE MAXIMUM OPENING The control lever will not move unless Moving the control lever further from While pulling up the neutral release 30”...

  • Page 56: Cruising

    9. OPERATION Cruising (neutral) (forward) MAXIMUM OPENING I. 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 57: Tilting Motor Tilt Lever

    7. OPERATION Tilt Lever ENGINE STOP (REMOTE CONTROL TYPE) (TILLER HANDLE TYPE) Tilt the motor up to prevent the propel- 1. Stop the boat. ler and gear case from hitting the bottom when beaching or stopping in 2. Move the gearshift lever or control shallow water.
  • Page 58 7. OPERATION ENGINE COVER GRIP 75” (when mooring) 45” 30” (when cruising in shallow water) TILT iEVER 4. To return the motor to the normal Reverse Operation: 3. Put the tilt lever in the TILT posi- RUN position, move the tilt lever The tilt lever must be in the RUN tion.
  • Page 59 7. OPERATION Motor angle During operation, be sure: The anticavitation plate remains under water at all times. Water flows from the cooling system indicator. INCORRECT INCORRECT The load is evenly distributed. CAUSES BOAT TO CAUSES BOAT TO “SQUAT” “PLOW” Excessive or imbalanced loading will O.K.

  • Page 60: Trim Tab Adjustment

    Trim Adjustment The trim tab is provided to adjust for If less effort is required to make left Make small adjustments at a time and “torque steer” which is a reaction of turns: retest. Incorrect trim tab adjustment the propeller rotation or propeller Loosen the trim tab tightening bolt can cause adverse steering.

  • Page 61: Engine Oil Pressure And Overheat Warning System

    7. OPERATION (MOTOR PROTECTION SYSTEM) Engine Oil Pressure and Overheat Warning System OIL PRESSURE <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 62 29). contact your closest authorized 2. If the oil is up to the recommended Honda Marine or Honda Outboard level, restart the engine. If the oil Motor dealers. pressure warning system stops after 30 seconds, the system is normal.

  • Page 63: Over-Rev Limiter

    7. OPERATION (MOTOR PROTECTION SYSTEM) Anode 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.

  • Page 64: High Altitude Operation

    For use at High altitude performance can be improved by specific modifi- low altitudes, have an authorized Honda Marine or Outboard cations to the carburetors. If you always operate your outboard Motor dealer return the carburetors to original factory specif- at altitudes above 5,000 feet (1,524 meters) have an authorized cations.

  • Page 65: Stopping The Engine Tiller Handle Type

    8. STOPPING THE ENGINE (TILLER HANDLE TYPE) Normal Engine Stop Emergency Engine Stop ENGINE STOP SWITCH EMERGENCY STOP THRO’ITLE GRIP 1. Turn the throttle grip to SLOW Disengage the emergency stop switch position and move the gearshift lev- clip from the engine stop switch by er to N(neutra1).
  • Page 66 8. STOPPING THE ENGINE (TILLIER HANDLE TYPE) PUSH ENGIN’E STOP SWITCH 2. Push the engine stop switch until the engine stops.

  • Page 67: Remote Control Type

    8. STOPPING THE ENGINE (REMOTE CONTROL TYPE) Normal Engine Stop Emergency Engine Stop N (neutral) EMERGENCY STOP SWITCH EMERGENCY STOP SWITCH LANYARD CONTR LEVER IGNITION EMEiGENCY STOP SWITCH CLIP When the boat is not in use, remove 1. Move the control lever to the N Disengage the emergency stop switch and store the ignition key.

  • Page 68: Transporting

    9. TRANSPORTING madering Horizontal Transport If there is insufficient road clearance STEERING FRICTION with the motor in the normal run po- sition, then trailer the motor in the tilted position using a motor support bar (refer to your motor support bar manufacturer’s instructions) or re- move the motor from the boat.

  • Page 69: 10. Cleaning And Flushing

    10. CLEANING AND FLUSHING 5. Move the gearshift lever or control lever to the N (neutral) position. Blush the outboard motor in the neutral position only. 6. Turn on the fresh water supply to the flush kit coupler. Running the outboard motor without sufSicient cooling water will IiIT COUPLER FLUSH...
  • Page 70 10. CLEANING AND FLUSHING TAPE 8. Allow the engine to run at idle for at least 5 minutes to clean the inside of the motor. 9. Stop the motor and remove the flush kit coupler. lO.Remove the sealing washer from the flush kit coupler and install the sealing washer on the wash plug.

  • Page 71: Maintenance

    SAFETY MAINTENANCE are best handled by professionals and are Some of the most important safety normally performed by a Honda techni- precautions follow. However, we cannot cian or other qualified mechanic. Good maintenance is essential for safe, warn you of every conceivable hazard economical, and trouble-free operation.

  • Page 72: Emission Control System Information

    Let the engine cool before touch- reliability, use only new, genuine Honda utilizes lean carburetor settings ing. Honda parts or their equivalents for and other systems to reduce the emissions repair and replacement. of oxides of nitrogen and hydrocarbons. -Injury from moving parts.
  • Page 73 Rough idle. The following instructions and proce- dures must be followed in order to keep Misfiring or backfiring under load. the emissions from your Honda engine within the emission standards. Afterburning (backfiring). Tampering and Altering Black exhaust smoke or high fuel consumption.
  • Page 74 Parts Maintenance The emission control systems on your Follow the maintenance schedule on Honda engine were designed, built, and page 74. Remember that this schedule is certified to conform with EPA and based on the assumption that your California emission regulations. We...

  • Page 75: Star Label

    11. MAINTENANCE STAR LABEL The Star Label means Cleaner Marine Engines A Star label was applied to this This engine has been certified as a: ‘-, outboard motor in accordance with the requirements of the California Air Resources Board. ciiiE2 The Symbol for Cleaner Marine Engines: Cleaner Air and Water - for a healthier lifestyle and environment.
  • Page 76 11. MAINTENANCE One Star Two Stars Three Stars Very Low Emission Ultra Low Emission Low Emission The two-star label identifies engines that The three-star label identifies engines The one-star label identifies engines that meet the Air Resources Board’s 2004 that meet the Air Resources Board’s meet the Air Resources Board’s 2001 exhaust emission standards.

  • Page 77: Tool Kit And Spare Parts

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

  • Page 78: Maintenance Schedule

    11. MAINTENANCE MAINTENANCE SCHEDULE Use only genuine HONDA parts or their equivalent for maintenance or repair. Replacement parts which are not of equivalent quality may damage the motor. REGULAR SERVICE PERIOD First Every Every Every Perform at every indicated year...
  • Page 79 NOTE: (1) Lubricate more frequently when used in salt water. (2) These items should be serviced by an authorized Honda marine dealer, unless you have the proper tools and are mechanically proficient. Refer to Honda Shop Manual for service procedures.

  • Page 80: Engine Oil

    . ..When oil filter is replaced Oil change interval: Recommended oil: After the first 20 hours or 1 month, BF25A...SAElOW-30 engine oil or then every 100 hours or 6 months. equivalent, API Service classfication (Refer to the maintenance schedule SC, SH.
  • Page 81 11. MAINTENANCE 5. Reinstall the oil filler cap. Always wash your hands after handling used oil. Also, please dispose of used motor oil in a manner that is compatible with the environment. We suggest you take it in a sealed container to your local service station reclamation center.

  • Page 82: Gear Oil

    3. Use new sealing washers and rein- the water will flow out first when the stall the level plug and drain plug drain plug is removed, or the oil will securely. be milky colored. If the oil appears abnormal contact your closest authorized Honda Marine dealer.

  • Page 83: Spark Plugs

    11. MAINTENANCE Spark Plugs Gear Oil Change To ensure proper engine operation, the 1. Position the outboard motor verti- spark plugs must be properly gapped cally. 2. Remove the level plug and drain and free of deposits. plug to drain the oil Inject oil through the drain plug hole until it Check-Adjust interval: Every 100 hours or 6 months.
  • Page 84 11. MAINTENANCE NOTICE The spark plugs must be : 0.0244028 securely tightened. A loose spark plug (0.6-0.7 can become very hot and may cause engine damage. Overtightening the spark plugs can damage the threads. 7. Thread the plugs in by hand to pre- 6.

  • Page 85: Battery (Not Included)

    11. MAINTENANCE DC Receptacle (Equipped type only) Battery (not included) 1. Install the battery in the battery box. 2. Connect the positive (+) battery cable Minimum requirements DC RECEPTACLE 12V-70AH marine cranking battery. first, then connect the negative (-) battery cable. Tighten the cable nuts TO ACCESS0 To protect the battery from mechanical securely.

  • Page 86: Lubrication

    11. MAINTENANCE Lubrication The DC receptacle provides a I2 volt, 6 Lubrication interval: After the first 20 hours or 1 month, amp output for battery charging. The then every 100 hours or 6 months. charging circuit is protected by a 15 amp (Refer to the maintenance schedule fuse that is mounted inside the engine page 76.)
  • Page 87 11. MAINTENANCE ADJUSTING PROPELLER SHAFT...

  • Page 88: Engine Fuel Filter

    11. MAINTENANCE Engine Fuel Filter CONNECTER FUEL HOSE extremely flammable, and gaso- line vapor can explode, causing serious injury or death. Do not smoke or allow flames or sparks in your working area. KEEP OUT OF REACH OF CHILDREN. Always work in a well-ventilated area. Make sure that any fuel drained from the outboard motor is stored in an approved FUEL FILTER...
  • Page 89 11. MAINTENANCE FUEL HOSES FUEL HOSE CLIPS ARROW (F&l Flow Direction) FUEL’FILTER 2. Install the new fuel filter so the 3. Lift the fuel filter up from the engine Change arrow on the fuel filter points under case. 1. Remove the fuel filter. toward the fuel pump.

  • Page 90: Fuel Tank And Filter

    11. MAINTENANCE Securely connect Fuel Tank and Filter the fuel hose Fuel ‘hnk Cleaning connector to the outboard motor 1. Disconnect the fuel hose from the (refer to page 35). fuel tank. 5. Prime the engine using the primer Gasoline is bulb (refer to page 36).

  • Page 91: Fuse Replacement

    11. MAINTENANCE Fuse Replacement (Electric starter type) FUEL TANK HOSE FUSE COVER CONNECTOR &FUELTANK FILTER BLOWN FUSE ARE 15A FUSE If the fuse is blown, running the engine Fuel Tank Filter Replacement Cleaning/Replacement will not charge the battery and the 1.

  • Page 92: Propeller

    Remove the cotter pin then remove the prevent accidental engine 14 mm castle nut, 15 mm plain washer, Use a new genuine Honda cotter pin and starting. propeller and thrust washer. bend the cotter pin ends as shown.

  • Page 93: Submerged Motor

    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: DRAIN SCREW 1.
  • Page 94 11. MAINTENANCE 8. Take the outboard motor to your Running the outboard motor closest authorized Honda Marine without su#icient cooling water will dealer for inspection and service as damage the water pump and overheat soon as possible. the engine. the emergency stop switch 7.

  • Page 95: Storage

    12. STORAGE For longer service life of the outboard motor, have your outboard motor serviced by an authorized Honda #l CARBURETOR Marine or Honda Outboard Motor DRAIN SCREW dealer before storage. If you are unable to take the motor to...
  • Page 96 12. STORAGE Outboard Motor Position i-.-/--1- CASE PROTkCTORS Horizontal transport or storage: Transport and store the motor either Rest the motor on the case protectors. vertically or horizontally, as shown above. Store the outboard motor in a well-ventilated area free from direct Improper transport or storage sunlight and humidity.

  • Page 97: Troubleshooting

    13. TROUBLESHOOTING (1) Engine does not start. Fuel Contamination Spark plug No sparks - There is no gasoline Fuel is not fed Incorrect gap is faulty. across spark in fuel tank. to carburetor. L- Broken spark plug Vent knob is not open or Plug isap vent clogged.
  • Page 98 13. TROUBLESHOOTING (2) Engine starts but immediately stops. Engine some times stops while cruising. Engine overheats Fuel Water intake screens . Normal sparking - No gasoline in fuel tank. are clogged. Water is mixed with There is gasoline Spark plug is not of speci- gasoline.

  • Page 99: Specifications

    14. SPECIFICATIONS Engine type 4 stroke OHC in-line 3 cylinder Displacement 30.45 cub (499 cm3) 0.024 - 0.028 in (0.6 - 0.7 mm) Spark plug gap Starter system Recoil starter Electric starter Ignition system C.D.1 Lubrication system Trochoid pump pressure lubrication Specified Engine: API standard...
  • Page 100 14. SPECIFICATIONS Specifications are subject to change without notice.
  • Page 101 14. SPECIFICATIONS ( MODEL BF30A Description Code BAWS Type Overall length 26.57 in (675 mm) 25.20 in (640 mm) 14.96 in (380 mm) 14.76 in (375 mm) 1 Overall width 51.77 in (1,315 mm) 51.77 in (1,315 mm) 46.85 in (1,190) Overall height 46.85 in (1,190 mm) 21.73 in (552 mm)
  • Page 102 14. SPECIFICATIONS Specifications are subject to change without notice.
  • Page 103 14. SPECIFICATIONS BF25A & BF30A Tuneup 0.024 - 0.028 in (0.6 - 0.7 mm) See page 8 1. Sp=k plug gap See shop manual. Idle speed 900 f 50 rpm See shop manual. Intake: 0.12 f 0.02 mm Valve clearance (cold) Exhaust: 0.20 f 0.02 mm...

  • Page 104: Warranty Service

    If you are dissatisfied with the decision Date of purchase made by the dealership’s management, contact the Honda Marine Customer Your name, address, and telephone Relations Office. number You can write: A detailed description of the problem American Honda Motor Co., Inc.

  • Page 105: Wiring Diagram

    16. WIRING DIAGRAM TILLER HANDLE TYPE (with recoil starter) : j/ . . .
  • Page 106 16. WIRING DIAGRAM TILLER HANDLE TYPE (with electric starter) r -----_-----___ BF25A outboard BF30A outboard...
  • Page 107 16. WIRING DIAGRAM REMOTE CONTROL TYPE BF25A outboard...

  • Page 108: Fuel Recommendations 3

    17. INDEX Over-Rev Limiter............Anode Metal ..............Battery (not included) ............Start Button..............Stop Switch ..............Break-in Procedure ............Fuel Choke Knob ............... Cap/Gauge/Vent Knob..........Choke/Fast Idle Lever ............Level ................CLEANING AND FLUSHING ........Line Connection............COMPONENT IDENTIFICATION .........
  • Page 109 17. INDEX STORAGE ................. Oil Pressure Indicator Light ..........Submerged Motor .............. Oil Pressure Indicator Light/Buzzer ........21 Throttle Other Checks ..............Friction Knob ............... OUTBOARD MOTOR SAFETY Grip ....................7 IMPGRTANT SAFETY INFORMATION Opening Indicator ............SAFETY LABEL LOCATIONS ........9 Tilt Lever ................
  • Page 110 - .MEMO -...

This manual is also suitable for:

Bf30aMarine bf25a

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