Yamaha TT-R125 Manuel D'atelier Du Proprietaire page 424

TRANSMISSION, SHIFT CAM AND SHIFT FORK
Shift cam and shift fork
1. Install:
Shift fork 1 (L) 1
G
Shift fork 2 (C) 2
G
Shift fork 3 (R) 3
G
NOTE:
Mesh the shift fork #1 (L) with the 2nd wheel
G
gear and #3 (R) with the 4th wheel gear on
the drive axle.
Mesh the shift fork #2 (C) with the 3rd pinion
G
gear on the main axle.
2. Install:
Shift cam 1
G
NOTE:
Apply the engine oil on the shift cam.
3. Install:
Shift fork guide bar 1 (short) 1
G
Shift fork guide bar 2 (long) 2
G
NOTE:
Apply the engine oil on the guide bars.
G
Be sure the long bar is inserted into the shift
G
forks #1 and #3 and the short one into #2.
4. Check:
Shifter operation
G
Transmission operation
G
Unsmooth operation → Repair.
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ENG