Transmission Inspection; Transmission Installation - Yamaha YFM400FWA 2000 5GH3-AE1 Service Manual

TRANSMISSION

TRANSMISSION INSPECTION

1.Measure:
Axle runout
Use a centering device and a dial gauge.
Out of specification → Replace the bent
axle.
Runout limit (drive axle):
0.03 mm (0.001 in)
2.Inspect:
Gear teeth
Blue discoloration/pitting/wear →
Replace.
Mated dogs
Rounded edges/cracks/missing portions
→ Replace.
3.Check:
Gear movement
Unsmooth → Repeat steps #1 and #2 or
replace the defective parts.
4.Inspect:
Circlip
Bends/looseness/damage → Replace.

TRANSMISSION INSTALLATION

1.Install:
Shift cam
Washer
Spring (short)
Shift fork "R" 1
Drive axle assembly 2
Guide bar 3
Clutch dog 2 4
Spring (long) 5
Shift fork "L" 6
NOTE:
Install the shift fork with the "R" mark fac-
ing towards the right side of the crankcase
and the shift fork with the "L" mark facing
towards the left side of the crankcase. Be
sure that the shift fork guide pin is properly
seated in the shift drum groove.
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ENG