Checking The Transmission - Yamaha XG250 Service Manual

EAS26290

CHECKING THE TRANSMISSION

1. Measure:
Main axle runout
●
(with a centering device and dial gauge)
Out of specification → Replace the main ax-
le.
Main axle runout limit
0.08 mm (0.0032 in)
2. Measure:
Drive axle runout
●
(with a centering device and dial gauge)
Out of specification → Replace the drive ax-
le.
Drive axle runout limit
0.08 mm (0.0032 in)
3. Check:
Transmission gears
●
Blue discoloration/pitting/wear → Replace
the defective gear(s).
Transmission gear dogs
●
Cracks/damage/rounded edges → Replace
the defective gear(s).
4. Check:
Transmission gear engagement
●
(each pinion gear to its respective wheel
gear)
Incorrect → Reassemble the transmission
axle assemblies.
NOTE:
When reassembling the main axle, press the
2nd pinion gear "1" onto it "2" as shown.
a
1
a. 102.2–102.4 mm
5. Check:
Transmission gear movement
●
Rough movement → Replace the defective
part(s).
6. Check:
Circlips
●
Bends/damage/looseness → Replace.
5-65
TRANSMISSION
2