Yamaha TW125 1999 Service Manual page 160

90.9 X 91.1 mm
TRANSMISSION
EAS00424
CHECKING THE TRANSMISSION
1. Measure:
S main axle runout
(with a centering device and dial gauge 1 )
Out of specification ! Replace the main
axle.
Main axle runout limit
0.08 mm
2. Measure:
S drive axle runout
(with a centering device and dial gauge 1 )
Out of specification ! Replace the drive
axle.
Drive axle runout limit
0.08 mm
3. Check:
S transmission gears
Blue discoloration/pitting/wear ! Replace
the defective gear(-s).
S transmission gear dogs
Cracks/damage/rounded edges ! Replace
the defective gear(-s).
4. Check:
S 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.
5. Check:
S transmission gear movement
Rough movement ! Replace the defective
part(-s).
6. Check:
S circlips
Damage/bends/looseness ! Replace.
4-66
ENG