Yamaha YZF-R125 Service Manual: Electrical system

Checking and lubricating the cables

The following procedure applies to all of the inner and outer cables. WARNINGDamaged outer cable may cause the cable to corrode and interfere with its movement. Replace damaged outer ca ...

Replacing the headlight bulbs

The following procedure applies to the low beam headlight bulb. 1. Remove: Headlight bulb cover "1" 2. Remove: Headlight bulb holder "1" 3. Remove: Headlight bulb "1" ...

Other materials:

Checking the valve seats
The following procedure applies to all of the valves and valve seats. 1. Eliminate: Carbon deposits (from the valve face and valve seat) 2. Check: Valve seat Pitting/wear Replace the cylinder head. 3. Measure: Valve seat width C "a" Out of specification Replace the ...

Installing the shift forks and shift drum assembly
1. Install: Shift fork-L "1" Shift fork-C "2" Shift fork-R "3" Shift drum assembly "4" Springs Shift fork guide bar "5" NOTE: The embossed marks on the shift forks should face towards the right side of the engine and be in the following sequence: "R", "C", "L". 2. Check: Tr ...

Engine tightening torques
Cylinder head tightening sequence: Generator cover tightening sequence: Clutch cover tightening sequence: Crankcase tightening sequence: A. Left crankcase B. Right crankcase ...