Yamaha YZF-R125 Service Manual: Balancer gear

Installing the shift shaft

1. Install: Stopper lever "1" Stopper lever spring "2" NOTE: Install the stopper lever spring as shown in the illustration. Hook the ends of the stopper lever spring onto the stoppe ...

Removing the primary drive gear and balancer gears

1. Loosen: Primary drive gear nut "1" NOTE: Place the aluminum plate "a" between the balancer drive gear "2" and the balancer driven gear "3", and then loosen the primary drive gear nut. ...

Other materials:

Circuit diagram
4. Main fuse 5. Main switch 9. Battery 25.ECU (engine control unit) 36.License plate light 37.Tail/brake light 44.Headlight relay 46.Pass switch 47.Dimmer switch 51.Headlight (low beam) 52.Auxiliary light 54.Headlight (high beam) 58.Meter light 60.High beam indicator light 64.Ignit ...

Checking the front brake caliper
1. Check: Brake caliper pistons "1" Rust/scratches/wear Replace the brake caliper assembly. Brake caliper body "2" Cracks/damage Replace the brake caliper assembly. Brake fluid delivery passages (brake caliper body) Obstruction Blow out with compressed air. ...

Checking the front and rear brake pads
The front and rear brake pads must be checked for wear at the intervals specified in the periodic maintenance and lubrication chart. Front brake pads Remove the front brake caliper by removing the bolts. Bolt Brake caliper Lining thickness Check each front br ...