Honda BF135A, BF150A, Marine BF115D Troubleshooting Manual 18 Pages Pagine ページ
Honda BF150A, a powerful and reliable outboard motor, offers an exhilarating boating experience. With its 150 horsepower, it delivers impressive acceleration and top speed, making it ideal for water sports enthusiasts and boaters who demand performance. Experience smooth and efficient operation with its advanced fuel injection system, ensuring optimal fuel economy and reduced emissions. The BF150A's compact design and lightweight construction make it easy to maneuver and transport, while its durable construction ensures longevity in marine environments.
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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
EN
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
Indicator lamp turns on / off
1/5
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.
The overheat indicator turns on and the buzzer sounds when the engine cooling circuit is faulty.
The engine speed slows down.
ACG Indicator
During normal operation, this indicator is off.
The ACG indicator turns on and the buzzer sounds when the charging system is faulty.
PGM-FI Indicator
During normal operation, this indicator is off.
The PGM-FI indicator turns on and the buzzer sounds when the engine control system is faulty.
When the engine key is turned on, all the indicators come on for a short time, and the buzzer sounds twice.
Indicator lamp turns on / off
Symptom and solution
2/5
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.
POSSIBLE CAUSES & SOLUTIONS
Cooling water intake port clogged. Clean the cooling water intake port.
Spark plugs have incorrect heat range. Replace the spark plugs.
>See method
• Faulty water pump.
• Thermostat clogged.
• Faulty thermostat.
• Cooling water passage clogged.
• Exhaust gas enters cooling system.
Consult your dealer.
Indicator lamp turns on / off
3/5
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. Add engine oil to the specified level.
>See method
Incorrect engine oil is used. Change the engine oil.
>See method
Indicator lamp turns on / off
4/5
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 & SOLUTIONS
Water has accumulated in the water separator. Clean the water separator. Check the fuel tank and fuel line for water accumulation.
>See method
If the buzzer sounds again, consult your dealer.
SYMPTOM
PGM-FI warning system comes on
PGM-FI indicator turns on.
PGM-FI warning buzzer sounds
POSSIBLE CAUSES & SOLUTIONS
PGM-FI warning system is faulty. Consult your dealer.
Indicator lamp turns on / off
5/5
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.
Engine does not start
Starter motor operates but the engine does not start
POSSIBLE
CAUSES
SOLUTIONS
No fuel in the fuel tank.
Fuel tank filter is clogged.
Refuel.
>See method
Clean the fuel tank filter.
See the boat manufacturer’s instructions.
Replace the fuel filter.
1/3
Fuel filter is clogged.
>See method
Fuel hose is kinked.
Re-locate the fuel hose.
Fuel pump is faulty.
Consult your dealer.
Using contaminated or spoiled petrol.
Dispose of the old fuel and clean the fuel tank. Fill with new petrol.
>See method
Engine does not start
POSSIBLE
CAUSES
Dirty spark plug.
Spark plug gap is incorrect.
SOLUTIONS
Consult your dealer.
Adjust the gap.
>See method
Replace the spark plug.
Spark plug is damaged.
>See method
TDC, CRANK sensor is faulty.
ECU malfunction.
Consult your dealer.
Consult your dealer.
Ignition coil is faulty.
Consult your dealer.
Wire harness is faulty.
Electrical leak of the emergency stop switch wire.
Emergency stop switch does not return to the starting position.
Consult your dealer.
Consult your dealer.
Consult your dealer.
Tighten the spark plug.
2/3
Spark plug is loose.
>See method
Engine does not start
3/3
POSSIBLE
CAUSES
SOLUTIONS
Reinstall the ignition coil.
Ignition coil is not installed correctly.
Emergency stop switch is not installed correctly.
>See method
Reinstall the emergency stop switch.
Starter motor does not operate
POSSIBLE
CAUSES
ACG coil is faulty.
Wire harness is faulty.
Shift lever is not in the neutral position.
Neutral switch is faulty.
SOLUTIONS
Consult your dealer.
Consult your dealer.
Shift to the neutral position.
Consult your dealer.
Replace the blown fuse with a new one.
Fuse has blown.
>See method
Engine stops after it's started /
Engine stops when it's running
Engine stops; no fuel in the fuel tank
POSSIBLE
CAUSES
No fuel in the fuel tank.
SOLUTIONS
Refuel.
>See method
1/2
Fuel tank contains fuel but engine stops
POSSIBLE
CAUSES
SOLUTIONS
Fuel contains water.
Consult your dealer.
Replace the fuel filter.
Fuel filter is clogged.
Fuel tank filter is clogged.
>See method
Clean the fuel tank filter.
See the boat manufacturer’s instructions.
Engine stops after it's started /
Engine stops when it's running
POSSIBLE
CAUSES
Engine idling speed is too low.
SOLUTIONS
Consult your dealer.
Fuel pump is faulty.
Consult your dealer.
Fuel pump is sucking air.
Sucking air from the fuel hose, hose joint, connector or primer bulb.
Consult your dealer.
Consult your dealer.
2/2
If the outboard motor was submerged
1/7
A submerged outboard motor must be serviced immediately after it is recovered from the water in order to minimize corrosion.
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. Remove the engine cover
2. Rinse the outboard motor with fresh water to remove salt water, sand, mud, etc.
If the outboard motor was submerged
2/7
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. Tilt the outboard motor up.
5. Loosen the vapor separator drain screw.
Drain the petrol into the drain pan as it flows out of the drain tube.
If the outboard motor was submerged
3/7
6. After draining, tighten the drain screw.
7. Clamp the drain tube on the front bracket clamp.
8. Tilt the outboard motor down.
If the outboard motor was submerged
4/7
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. Drain the engine oil until the flow of old oil reduces to a trickle.
11. After draining the oil, install the drain bolt and new sealing washer, and tighten the bolt securely.
If the outboard motor was submerged
5/7
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. The oil level must be between the upper level (A) and lower level (B).
STEP 4 – Lubricate the engine cylinder
14. Remove all the spark plugs.
If the outboard motor was submerged
6/7
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 crossthreading. Tighten
1/8—1/4 turn after the spark plug seats.
Install the ACG cover.
If the outboard motor was submerged
7/7
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.
19. Attempt to start the engine.
- If the engine fails to start, remove the spark plugs, clean and dry the electrodes, then reinstall the spark plugs and attempt to start the engine again.
- If used engine oil showed signs of water contamination, then a second engine oil change should be performed after running the engine for 1/2 hour.
- If the engine starts and no mechanical damage is evident, continue to run the engine for 1/2 hour or longer.
Take the outboard motor to your dealer as soon as possible.
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