Yamaha YZF-R125 Service Manual: Cylinder head

Installing the exhaust assembly

1. Install: Exhaust assembly "1" Exhaust pipe nuts "2" Exhaust assembly bolts "3" "4" NOTE: Do not fully tighten the nuts and bolts. 2. Tighten: Exhaust pipe nuts "2" Exhaust assem ...

Removing the cylinder head

1. Align: "I" mark "a" on the generator rotor (with the stationary pointer "b" on the generator cover) a. Turn the crankshaft counterclockwise. b. When the piston is at TDC on the compre ...

Other materials:

Rear wheel
To remove the rear wheel WARNING To avoid injury, securely support the vehicle so there is no danger of it falling over. Loosen the axle nut. Axle nut Drive chain slack adjusting bolt Locknut Brake caliper Lift the rear wheel off the ground according to the pr ...

Coolant
The coolant level should be checked before each ride. In addition, the coolant must be changed at the intervals specified in the periodic maintenance and lubrication chart. To check the coolant level Place the vehicle on a level surface and hold it in an upright position. TIP ...

Replacing the air filter element and cleaning the check hose
The air filter element should be replaced at the intervals specified in the periodic maintenance and lubrication chart. Have a Yamaha dealer replace the air filter element more frequently if you are riding in unusually wet or dusty areas. In addition, the air filter check hose must be ...