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12. CRANKCASE/CRANKSHAFT ATV 50
Measure the crankshaft runout.
Service Limit
A B
0.15 mm (0.006 in) 0.1 mm (0.004 in)
replace if over replace if over
Check the crankshaft bearings for excessive
play. The bearings must be replaced if they
are noisy or have excessive play. Play Play
Axial Radial
CRANKSHAFT INSTALLATION
Wash the crankshaft in cleaning solvent and
then check for cracks or other faults.
· After check, apply clean engine oil to
all moving and sliding parts.
· Remove all gasket material from the
crankcase mating surfaces. Dress any
roughness or irregularities with an oil
stone.
12-5