Honda BF115D User Manual

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.
- 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
Contents
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Web instruction manual, Official owner's manual PDF &
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*Tap or click the relevant issue.
Troubleshooting Guide
BF115D, BF135A, BF150A
EN

Honda BF115D Specifications

General

Fuel System	Programmed Fuel Injection (PGM-FI)
Shaft Length	L: 508 mm (20 in), X: 635 mm (25 in)
Cooling System	Water Cooled
Starting System	Electric
Cylinders	4
Camshaft	SOHC
Full Throttle RPM Range	5000-6000 RPM
Lubrication	Wet Sump
Trim Range	-4° to +16°
Engine Type	4-Stroke
Displacement	1496 cc
Max Output	115 HP
Exhaust	Through Propeller
Bore & Stroke	73 mm x 89.4 mm (2.87 in x 3.52 in)

Summary

Indicator Lamp Troubleshooting

Indicator Light Denotations

Explains the meaning of different indicator lights on the engine control panel.

Overheat Warning System Issues

Details symptoms and solutions for the overheat warning system coming on.

Oil Pressure Indicator Problems

Covers symptoms and solutions when the oil pressure indicator does not turn on.

Water Separator & PGM-FI Warnings

Troubleshooting for water separator and PGM-FI warning systems.

ACG Warning System Troubleshooting

Describes symptoms and solutions for the ACG warning system.

Engine Fails to Start

Starter Operates, Engine Won't Start

Addresses issues like no fuel, clogged filters, or kinked fuel lines when the starter engages.

Spark Plug Related Issues

Solutions for dirty, incorrectly gapped, damaged, or loose spark plugs.

Electrical and Sensor Faults

Troubleshoots ECU, ignition coil, wire harness, and emergency stop switch problems.

Starter Motor Non-Operation

Solutions for when the starter motor itself does not operate.

Engine Stops During Operation

Fuel Supply and Contamination Issues

Addresses symptoms related to no fuel, water in fuel, or clogged fuel filters.

Idling Speed and Fuel Pump Problems

Solutions for low idling speed, faulty fuel pumps, or air suction in the fuel system.

Submerged Outboard Motor Recovery

Initial Washing Procedure

Steps to wash the outboard motor immediately after recovery from water.

Fuel Draining Process

Instructions on how to drain the fuel from the outboard motor.

Engine Oil Replacement

Detailed steps for changing the engine oil after submersion.

Cylinder Lubrication

Procedure for lubricating the engine cylinders with oil.

Engine Restart Attempt

Guidelines for attempting to start the engine and important notices.