Yamaha WR250F(N), Owner'S Service Manual

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ENG
TRANSMISSION, SHIFT CAM AND SHIFT FORK
EC4H4810
Shift fork, shift cam and segment
1. Inspect:
●
Shift fork 1
Wear/damage/scratches
→
Replace.
2. Inspect:
●
Shift cam 1
●
Segment 2
Wear/damage
→
Replace.
3. Check:
●
Shift fork movement
Unsmooth operation
→
Replace shift
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.
EC4H5000
ASSEMBLY AND INSTALLATION
Transmission
1. Install:
●
5th pinion gear (27T) 1
●
3rd pinion gear (21T) 2
●
Collar 3
●
4th pinion gear (24T) 4
●
2nd pinion gear (16T) 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.