Checking The Shift Forks; Checking The Shift Drum Assembly; Checking The Transmission - Yamaha WR250R Service Manual
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Also See for WR250R:
- Owner's manual (100 pages) ,
- Owner's manual (96 pages) ,
- Owner's manual (98 pages)
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EAS26260
CHECKING THE SHIFT FORKS
The following procedure applies to all of the shift
forks.
1. Check:
Shift fork pawl "2"
G
Bends/damage/scoring/wear → Replace the
shift fork.
Shift fork cam follower "1"
G
2. Check:
Shift fork guide bar
G
Roll the shift fork guide bar on a flat surface.
Bends → Replace.
EWA12840
WARNING
Do not attempt to straighten a bent shift fork
guide bar.
3. Check:
Shift fork movement
G
(along the shift fork guide bar)
Rough movement → Replace the shift forks
and shift fork guide bar as a set.
EAS26270
CHECKING THE SHIFT DRUM ASSEMBLY
1. Check:
Shift drum groove
G
Damage/scratches/wear → Replace the shift
drum assembly.
Shift drum segment "1"
G
Damage/wear → Replace the shift drum as-
sembly.
Shift drum bearing
G
Damage/pitting → Replace the shift drum as-
sembly.
1
EAS26290
CHECKING THE TRANSMISSION
1. Measure:
Main axle runout
G
(with a centering device and dial gauge "1")
Out of specification → Replace the main axle.
Main axle runout limit
0.08 mm (0.0032 in)
5-67
TRANSMISSION
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