Yamaha YZ125/LC Manuel D'atelier Du Proprietaire page 354

TRANSMISSION, SHIFT CAM AND SHIFT FORK
EC4H4801
Shift fork, shift cam and segment
1. Inspect:
9 Shift fork 1
Wear/Damage/Scratches ¡ Replace.
2. Inspect:
9 Shift cam 1
9 Segment 2
9 Guide bar 3
Bend/Wear/Damage ¡ Replace.
3. Check:
9 Shift fork movement
On its guide bar.
Unsmooth operation ¡ Replace shift fork
and/or guide bar.
NOTE:
For a malfunctioning shift fork, replace not only
the shift fork itself but the two gears each adja-
cent to the shift fork.
EC4H5000
ASSEMBLY AND INSTALLATION
EC4H5213
Transmission
1. Install:
9 5th pinion gear (23T) 1
9 3rd pinion gear (19T) 2
9 4th pinion gear (19T) 3
9 2nd pinion gear (15T) 4
To main axle 5.
NOTE:
9 Apply the molybdenum disulfide oil on the 4th
and 5th pinion gears inner circumference and
on the end surface.
9 Apply the molybdenum disulfide oil on the 2nd
and 3rd pinion gears inner circumference.
4-71
ENG