Checking The Shift Drum Assembly; Checking The Transmission - Yamaha MT-09 2021 Service Manual

EAS30432

CHECKING THE SHIFT DRUM ASSEMBLY

1. Check:
• Shift drum groove
Damage/scratches/wear → Replace the shift
drum assembly.
• Shift drum segment "1"
Damage/wear → Replace the shift drum as-
sembly.
• Shift drum bearing "2"
Damage/pitting → Replace the shift drum as-
sembly.
G089024
EAS30433

CHECKING THE TRANSMISSION

1. Measure:
• 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 (0.0032 in)
2. Measure:
• 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 (0.0032 in)
3. Check:
• Transmission gear
• Transmission gear dogs
4. Check:
• Transmission gear engagement
5. Check:
1
• Transmission gear movement
6. Check:
• Circlip
5-92
TRANSMISSION
1
Blue discoloration/pitting/wear → Replace
the defective gear(s).
Cracks/damage/rounded edges → Replace
the defective gear(s).
G089025
(each pinion gear to its respective wheel
gear)
Incorrect → Reassemble the transmission
axle assemblies.
Rough movement → Replace the defective
part(s).
Bends/damage/looseness → Replace.