Checking The Transmission; Installing The Transmission - Yamaha MBK MW125 2014 Service Manual

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)
1
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)
1
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.
5. Check:
• Transmission gear movement
Rough movement → Replace the defective
part(s).
EAS30438

INSTALLING THE TRANSMISSION

1. Install:
• Oil seal "1"
(to the left crankcase)
• Oil seal "2"
(to the transmission case cover)
Installed depth "a"
41.0–41.5 mm (1.61–1.63 in)
Installed depth "b"
0.25–0.75 mm (0.009–0.030 in)
2
2. Install:
• Primary driven gear "1"
(to the main axle "2")
Primary driven gear installed
depth
0.5–0.9 mm (0.020–0.035 in)
a. Primary driven gear installed depth
3. Install:
• Transmission case cover "1"
Transmission case cover bolt
10 Nm (1.0 m·kgf, 7.2 ft·lbf)
5-60
TRANSMISSION
New
New
a
b
a
2
1
1