The service and repair information contained in this manual is intended for use by qualified, professional technicians. Attempting

service or repairs without the proper training, tools, and equipment could cause injury to you or others. It could also damage the

vehicle or create an unsafe condition.

This manual describes the proper methods and procedures for performing service, maintenance and repairs. Some procedures

require the use of specially designed tools and dedicated equipment. Any person who intends to use a replacement part, service

procedure or a tool that is not recommended by Honda, must determine the risks to their personal safety and the safe operation of

Because this manual is intended for the professional service technician, we do not provide warnings about many basic shop safety

practices (e.g., Hot parts–wear gloves). If you have not received shop safety training or do not feel confident about your knowledge

of safe servicing practice, we recommend that you do not attempt to perform the procedures described in this manual.

Some of the most important general service safety precautions are given below. However, we cannot warn you of every

conceivable hazard that can arise in performing service and repair procedures. Only you can decide whether or not you should

perform a given task.

Make sure you have a clear understanding of all basic shop safety practices and that you are wearing appropriate clothing and

using safety equipment. When performing any service task, be especially careful of the following:

• Protect yourself and others whenever you have the vehicle up in the air. Any time you lift the vehicle, either with a hoist or a jack,

Make sure the engine is off before you begin any servicing procedures, unless the instruction tells you to do otherwise. This will

help eliminate several potential hazards:

• Carbon monoxide poisoning from engine exhaust. Be sure there is adequate ventilation whenever you run the engine.

• Burns from hot parts or coolant. Let the engine and exhaust system cool before working in those areas.

• Injury from moving parts. If the instruction tells you to run the engine, be sure your hands, fingers and clothing are out of the way.

Gasoline vapors and hydrogen gases from batteries are explosive. To reduce the possibility of a fire or explosion, be careful when

working around gasoline or batteries.

• Use only a nonflammable solvent, not gasoline, to clean parts.

This manual covers following types of CBF125S models:

• A contaminated brake disc or pad reduces stopping power. Discard contaminated pads and clean a contaminated disc with a

• Never allow contaminants (dirt, water, etc.) to enter an open reservoir.

• Once the hydraulic system has been opened, or if the brake feels spongy, the system must be bled.

• Always use fresh DOT 3 or DOT 4 brake fluid from a sealed container when servicing the system. Do not mix different types of

• Always check brake operation before riding the motorcycle.

• Contaminated caliper

• Contaminated master cylinder

• Caliper not sliding properly

• Low brake fluid level

• Clogged fluid passage

• Warped/deformed brake disc

• Sticking/worn caliper piston

• Sticking/worn master cylinder piston

• Bent brake lever

• Contaminated brake pad/disc

• Misaligned wheel

• Badly worn brake pad/disc

• Warped/deformed brake disc

• Caliper not sliding properly

• Clogged/restricted fluid passage

• Sticking caliper piston