Checking The Drive Shaft; Checking The Final Drive Gear - Yamaha YFM400FAR Service Manual

REAR AXLE/FINAL DRIVE GEAR AND DRIVE SHAFT

CHECKING THE DRIVE SHAFT

1.Check:
Drive shaft (splines)
G
Wear/damage → Replace.

CHECKING THE FINAL DRIVE GEAR

1.Check:
Final gear case 1
G
Bearing housing (ring gear) 2
G
Cracks/damage → Replace.
NOTE:
When the final gear case and/or the ring gear
bearing housing are replaced, be sure to
adjust the shim of the final drive pinion gear
and/or ring gear.
2.Check:
Gear teeth
G
Pitting/galling/wear → Replace the drive
pinion gear and ring gear as a set.
Oil seals
G
O-rings
G
Damage → Replace.
3.Check:
Bearings
G
Damage → Replace.
NOTE:
Reusing roller bearings is acceptable, but
G
Yamaha recommends installing new ones.
Do not reuse oil seals.
When the final drive pinion gear and/or ring
G
gear are replaced, be sure to adjust the shim
of the final drive pinion gear and/or ring gear.
7 - 25
DRIV