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Contents
- Indicator lamp turns on / off
- Engine does not start
- Engine stops after it's started / Engine
stops when it's running
- If the outboard motor was submerged
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
BF115D, BF135A, BF150A
*Tap or click the relevant issue.
EN

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  • Page 1

    Troubleshooting Guide BF115D, BF135A, BF150A Contents *Tap or click the relevant issue. - Indicator lamp turns on / off - Engine does not start - Engine stops after it's started / Engine stops when it's running - If the outboard motor was submerged This troubleshooting guide is for reference purposes and supplements the owner’s manual that came with your...

  • Page 2: Oil Pressure Indicator, Overheat Indicator

    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 when the oil level is low and/or the engine lubrication system is faulty. The engine speed slows down gradually. Overheat Indicator During normal operation, this indicator is off.

  • Page 3

    Indicator lamp turns on / off Symptom and solution SYMPTOM Overheat warning system comes on Overheat warning system comes on. Overheat warning buzzer sounds. Engine speed decreases and stops. Engine speed cannot be increased by opening the throttle. Engine will stop within 20 seconds after engine speed is limited.

  • Page 4

    Indicator lamp turns on / off SYMPTOM Oil pressure indicator does not turn on. Oil pressure indicator does not come on. Oil pressure warning buzzer sounds. Engine speed decreases. Engine speed cannot be increased by opening the throttle. POSSIBLE CAUSES & SOLUTIONS Insufficient engine oil.

  • Page 5

    Indicator lamp turns on / off SYMPTOM Buzzer sound alternates on and off but no warning indicator turns on (Oil pressure indicator stays on). If buzzer sounds alternates on and off at short intervals, this is a water separator warning. POSSIBLE CAUSES &...

  • Page 6

    Indicator lamp turns on / off SYMPTOM ACG warning system comes on ACG indicator turns on. ACG warning buzzer sounds intermittently. POSSIBLE CAUSES & SOLUTIONS Battery voltage is too high or low. Check the battery. >See method Faulty ACG. Consult your dealer.

  • Page 7

    Engine does not start Starter motor operates but the engine does not start POSSIBLE SOLUTIONS CAUSES No fuel in the fuel Refuel. tank. >See method Clean the fuel tank filter. Fuel tank filter is See the boat manufacturer’s clogged. instructions. Replace the fuel filter.

  • Page 8

    Engine does not start POSSIBLE SOLUTIONS CAUSES Dirty spark plug. Consult your dealer. Spark plug gap is Adjust the gap. incorrect. >See method Replace the spark plug. Spark plug is damaged. >See method TDC, CRANK sensor Consult your dealer. is faulty. ECU malfunction.

  • Page 9

    Engine does not start POSSIBLE SOLUTIONS CAUSES Reinstall the ignition coil. Ignition coil is not installed correctly. >See method Emergency stop switch is not Reinstall the emergency stop switch. installed correctly. Starter motor does not operate POSSIBLE SOLUTIONS CAUSES ACG coil is faulty. Consult your dealer.

  • Page 10

    Engine stops after it's started / Engine stops when it's running Engine stops; no fuel in the fuel tank POSSIBLE SOLUTIONS CAUSES No fuel in the fuel Refuel. tank. >See method Fuel tank contains fuel but engine stops POSSIBLE SOLUTIONS CAUSES Fuel contains water.

  • Page 11

    Engine stops after it's started / Engine stops when it's running POSSIBLE SOLUTIONS CAUSES Engine idling speed Consult your dealer. is too low. Fuel pump is faulty. Consult your dealer. Fuel pump is sucking Consult your dealer. air. Sucking air from the fuel hose, hose joint, Consult your dealer.

  • Page 12

    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. Set the end of the tube toward the outside of the engine undercase. Draining the fuel becomes easier when the front end of the drain tube is as low as possible. 4.

  • Page 14

    If the outboard motor was submerged 6. After draining, tighten the drain screw. 7. Clamp the drain tube on the front bracket clamp. 8. Tilt the outboard motor down.

  • Page 15

    If the outboard motor was submerged STEP 3 – Change the engine oil 9. Remove the oil filler cap. 10. Place a suitable container under the oil drain guide, Set the drain plug cover under the guide. remove the engine oil drain bolt and washer.

  • Page 16

    If the outboard motor was submerged 12. 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. 13. 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 15. Pour a teaspoon of engine oil into all the spark plug holes to lubricate the inside of the cylinders. 16. Carefully install the spark plugs by hand to avoid cross- threading. Tighten 1/8—1/4 turn after the spark plug seats.

  • Page 18

    If the outboard motor was submerged STEP 5 – Attempt to start the engine 18. 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.

This manual also for:

Bf135a, Bf150a

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