Yamaha YFM25RY Automobile User Manual


 
TRANSMISSION
5-63
EAS26250
REMOVING THE TRANSMISSION
1. Remove:
Shift fork guide bar “1”
Shift drum assembly “2”
Shift fork 3 (R) “3”
Shift fork 2 (C)
Shift fork 1 (L) “4”
2. Remove:
Transmission “5”
EAS26260
CHECKING THE SHIFT FORKS
The following procedure applies to all of the
shift forks.
1. Check:
Shift fork movement
(along the shift fork guide bar)
Rough movement Replace the shift
forks and shift fork guide bar as a set.
2. Check:
Shift fork cam follower “1”
Shift fork pawl “2”
Bends/damage/scoring/wear Replace
the shift fork.
3. Check:
Shift fork guide bar
Roll the shift fork guide bar on a flat sur-
face.
Bends Replace.
WARNING
EWA12840
Do not attempt to straighten a bent shift
fork guide bar.
EAS26270
CHECKING THE SHIFT DRUM ASSEMBLY
1. Check:
Shift drum groove “1”
Damage/scratches/wear Replace the
shift drum assembly.
Shift drum segment “2”
Damage/wear Replace the shift drum
assembly.
Shift drum bearing
Damage/pitting Replace the shift drum
assembly.
1. Shift fork 3 (R)
2. Shift fork 2 (C)
3. Shift fork 3 (L)
4. Shift fork guide bar
5. Shift drum assembly
6. Shift fork cam follower