11.CRANKCASE/CRANKSHAFT/
BALANCE SHAFT ATV 300/250
Measure the connecting rod small end free A
play (A).
Out of specification:
B B
0.8 ~ 1 mm (0.032 ~ 0.04 in) Replace the
crankshaft.
Measure the crankshaft run out (B).
Service Limit: 0.1 mm (0.004 in)
C
Measure the connecting rod big end side D
clearance (C).
Service Limit: 0.6 mm (0.024 in)
Measure the crank width (D).
Out of specification:
55.15 ~ 55.2 mm (2.206 ~2.208 in)
Replace the crankshaft.
Turn the crankshaft bearings and check for
Play
excessive play.
Measure the crankshaft bearing play. Play
Service Limit:
Axial : 0.2 mm (0.008 in)
Radial : 0.05 mm (0.002 in)
Axial Radial
11-5