Honda BF25D Troubleshooting Manual
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Honda BF25D Troubleshooting Manual

Honda BF25D Troubleshooting Manual

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emergency starter rope)
This troubleshooting guide is for reference purposes and
supplements the owner's manual that came with your
outboard motor. Always refer to the Owner's manual for
clarification and more detail on the processes shown in
this document.
Photos in this guide may not match your actual model.
It is recommended that you download this PDF and store
it in your device.
Web instruction manual, Official owner's manual PDF &
Dealer locator
https://www.hondappsv.com
Troubleshooting Guide
BF25D, BF30D
EN

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Summary of Contents for Honda BF25D

  • Page 1: Table Of Contents

    Troubleshooting Guide BF25D, BF30D Contents Indicator lamp turns on / off Engine does not start Engine speed fluctuates or engine stalls Engine speed does not increase Engine overheats Engine overrevs Power trim/tilt does not operate (T type) If the outboard motor was submerged...

  • Page 2: Indicator Lamp Turns On / Off

    Indicator lamp turns on / off Denotation of Indicators Oil Pressure Indicator During normal operation, this indicator remains turned on. It turns off and the buzzer sounds (R type only) when the oil level is low and/or the engine lubrication system is faulty. Overheat Indicator During normal operation, this indicator is off.
  • Page 3 Indicator lamp turns on / off Symptom and solution SYMPTOM Oil pressure indicator does not turn on Oil pressure indicator does not come on. Oil pressure warning buzzer sounds. (R type only. The buzzing sound stops below an engine speed of 1,400 min-1 (rpm).) WHAT TO DO Stop the engine immediately and check the engine oil level.
  • Page 4 Indicator lamp turns on / off SYMPTOM Overheat warning system comes on Overheat warning system comes on. Overheat warning buzzer sounds. (R type only) Engine speed decreases. Engine will stop within 20 seconds after engine speed is limited. WHAT TO DO Return the shift lever to the N (neutral) position (idle speed) immediately, and check whether water is flowing out of the cooling water check hole.

  • Page 5: Engine Does Not Start

    Engine does not start POSSIBLE SOLUTIONS CAUSES Refuel. No fuel in the fuel tank. >See method on https://www.hondappsv.com Fuel hose is Check for excessively bent or pinched flattened or kinked. fuel line. Fuel hose connector Connect the fuel hose connector is not connected properly.
  • Page 6 Engine does not start POSSIBLE SOLUTIONS CAUSES Replace the blown fuse with a new one. Fuse is blown out. >See method on https://www.hondappsv.com Engine is started in Start in correct procedure. wrong procedure.

  • Page 7: Engine Speed Fluctuates Or Engine Stalls

    Engine speed fluctuates or engine stalls POSSIBLE SOLUTIONS CAUSES Refuel. Fuel level is low. >See method on https://www.hondappsv.com Fuel hose is Check for excessively bent or pinched flattened or kinked. fuel line. Replace fuel filter. Fuel filter is clogged. >See method on https://www.hondappsv.com Adjust the gap.

  • Page 8: Engine Speed Does Not Increase

    Engine speed does not increase POSSIBLE SOLUTIONS CAUSES Fuel hose is Check for excessively bent or pinched flattened or kinked. fuel line. Replace fuel filter. Fuel filter is clogged. >See method on https://www.hondappsv.com Check engine oil and add to specified level Engine oil level is low.

  • Page 9: Engine Overheats

    Engine overheats POSSIBLE SOLUTIONS CAUSES Water intake port Clean water intake port and/or water and/or water check check hole. hole are/is clogged. Engine is overloaded because of unequally distributed Distribute the passengers equally. passengers or Do not load on the boat excessively. excessive load on the boat.

  • Page 10: Engine Overrevs

    Engine overrevs POSSIBLE SOLUTIONS CAUSES Install the outboard motor in the Cavitation. proper position. Propeller is damaged. Replace propeller. Unmatched propeller Consult your dealer. is selected. Trim angle is not Trim to correct angle. correct.

  • Page 11: Power Trim/Tilt Does Not Operate (T Type)

    Power trim/tilt does not operate (T type) POSSIBLE SOLUTIONS CAUSES Battery is Charge battery. undercharged. Manual relief valve is Tighten manual relief valve. loose. Power trim/tilt oil level is low or air is Consult your dealer. in the oil.

  • Page 12: If The Outboard Motor Was Submerged

    If there is a Honda outboard motor dealer nearby, take the outboard motor immediately to the dealer. If doing so is not an option, proceed as follows: STEP 1 - Wash the outboard motor 1.
  • Page 13 If the outboard motor was submerged STEP 2 – Drain the fuel 3. Drain the fuel from all the carburetor. Make sure the drain screws are tightened after draining. 4. Remover the emergency stop switch clip. STEP 3 – Drain the water from the cylinder 5.
  • Page 14 If the outboard motor was submerged 6. Remove the flywheel cover. Wind the emergency starter rope (Refer to the Emergency starting procedure.) Drain the water from the cylinder by pulling the emergency starter rope several times.
  • Page 15 If the outboard motor was submerged STEP 4 – Change the engine oil 7. Remove the oil filler cap. 8. Place a suitable container under the oil drain guide, remove the drain bolt cover, engine oil drain bolt and washer. Drain the engine oil until the flow of old oil reduces to a trickle.
  • Page 16 If the outboard motor was submerged 10. Refill to the upper level mark on the oil level dipstick with the recommended oil. Do not overfill. Too much engine oil may adversely affect the engine. 11. Check the oil level, insert the dipstick all the way to the engine then read the level.
  • Page 17 If the outboard motor was submerged STEP 5 – Lubricate the cylinder 12. Pour a teaspoon of engine oil into all the spark plug holes. 13. Pull the emergency starter rope several times to lubricate the inside of the cylinder. Then remove the emergency starter rope.
  • Page 18 If the outboard motor was submerged STEP 6 – Attempt to start the engine 15. Install the engine cover. NOTICE If the outboard motor was running when it became submerged, there may be mechanical damage, such as bent connecting rods. If the engine binds when cranked, do not attempt to run the outboard motor until it has been repaired.

  • Page 19: If The Starting System Does Not Operate

    If the starting system does not operate (using the emergency starter rope) If the starting system does not operate properly for some reasons, the engine can be started using the emergency starter rope in the tool kit. 1. Remove the emergency stop switch clip.
  • Page 20 If the starting system does not operate (using the emergency starter rope) 4. Set the shift lever or remote control lever to the neutral position. 5. Insert the emergency clip into the emergency stop switch. Attach the other end of the emergency stop switch lanyard securely to the...
  • Page 21 If the starting system does not operate (using the emergency starter rope) 7. Set the knotted end of the emergency starter rope in the notch in the flywheel. 8. Wind the emergency starter rope clockwise around the fly wheel along the groove in the flywheel.
  • Page 22 If the starting system does not operate (using the emergency starter rope) 10. Leave the flywheel cover off and install the engine cover. Lock the engine cover fixing levers.

This manual is also suitable for:

Bf30d

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