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:

    Installing the starter clutch
    1. Install: Starter clutch assembly Starter clutch bolts "1" NOTE: While holding the generator rotor "2" with the sheave holder "3", tighten the starter clutch bolts. Do not allow the sheave holder to touch the projection on the generator rotor. Stake the end "a" of each start ...

    Checking the speed sensor
    1. Check: Speed sensor output voltage Out of specification → Replace. a. Connect the pocket tester (DC 20 V) to the speed sensor coupler (wire harness end) as shown. Positive tester probe gray "1" Negative tester probe gray/black "2" b. Set the main switch to "ON". c. ...

    Drive chain slack
    The drive chain slack should be checked before each ride and adjusted if necessary. To check the drive chain slack Place the motorcycle on the sidestand. TIP When checking and adjusting the drive chain slack, there should be no weight on the motorcycle. Shift the transmission in ...

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