Yamaha YZF-R125 Owners Manual: Catalytic converters

This vehicle is equipped with catalytic converters in the exhaust system.

WARNING
The exhaust system is hot after operation. To prevent a fire hazard or burns:

  • Do not park the vehicle near possible fire hazards such as grass or other materials that easily burn.

  • Park the vehicle in a place where pedestrians or children are not likely to touch the hot exhaust system.

  • Make sure that the exhaust system has cooled down before doing any maintenance work.

  • Do not allow the engine to idle more than a few minutes. Long idling can cause a build-up of heat.

NOTICE
Use only unleaded gasoline. The use of leaded gasoline will cause unrepairable damage to the catalytic converter.

    Fuel
    Make sure there is sufficient gasoline in the tank. WARNING Gasoline and gasoline vapors are extremely flammable. To avoid fires and explosions and to reduce the risk of injury when refueli ...

    Rider seat
    To remove the rider seat Insert the key into the seat lock, and then turn it clockwise. Seat lock Open. Pull the rider seat off. To install the rider seat 1. Insert the pro ...

    Other materials:

    Bleeding the hydraulic brake system
    WARNINGBleed the hydraulic brake system whenever: the system is disassembled. a brake hose is loosened, disconnected or replaced. the brake fluid level is very low. brake operation is faulty. NOTE: Be careful not to spill any brake fluid or allow th ...

    General maintenance and lubrication chart
    TIP The air filter needs more frequent service if you are riding in unusually wet or dusty areas. Hydraulic brake service Regularly check and, if necessary, correct the brake fluid level. Every two years change the brake fluid. Replace the brake hoses every four ye ...

    Checking the cylinder head breather hose
    1. Remove: Left side panel Refer to "GENERAL CHASSIS" on page 4-1. 2. Check: Cylinder head breather hose "1" Cracks/damage → Replace. Loose connection → Connect properly. CAUTION:Make sure the cylinder head breather hose is routed correctly. ...

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