Shift Fork, Shift Cam And Segment; Transmission - Yamaha WR400F(M) Owner's Service Manual

TRANSMISSION, SHIFT CAM AND SHIFT FORK
EC4H4801

Shift fork, shift cam and segment

1. Inspect:
Shift fork 1
Wear/damage/scratches
2. Inspect:
Shift cam 1
Segment 2
Bend/wear/damage
3. Check:
Shift fork movement
Unsmooth operation
fork.
NOTE:
For a malfunctioning shift fork, replace not only
the shift fork itself but the two gears each adja-
cent to the shift fork.
EC4H5212

Transmission

1. Install:
5th pinion gear (25T) 1
3rd pinion gear (16T) 2
Collar 3
4th pinion gear (20T) 4
2nd pinion gear (15T) 5
To main axle 6.
NOTE:
Apply the molybdenum disulfide oil on the
4th and 5th pinion gears inner circumference
and on the end surface.
Apply the molybdenum disulfide oil on the
2nd and 3rd pinion gears inner circumfer-
ence.
4 - 90
ENG
Replace.
Replace.
Replace shift