KYMCO Mongoose 70

11.CRANKCASE/CRANKSHAFT
11-5
CRANKSHAFT INSPECTION
Measure the connecting rod small end I.D.
Service Limit: 13.06 mm (0.5224 in)
Measure the connecting rod small end free
play (A).
Service Limit: 0.6 mm (0.024 in)
Measure the crankshaft run out (B).
Service Limit: 0.1 mm (0.004 in)
Measure the connecting rod big end side
clearance (C).
Service Limit: 0.05 mm (0.002 in)
Measure the crank width (D).
Out of specification:
90cc: 45.15 ~ 45.2 mm (1.806 ~ 1.808 in)
70cc/50cc-4T:
42.15 ~ 42.2 mm (1.686 ~ 1.688 in)
Turn the crankshaft bearings and check for
excessive play.
Measure the crankshaft bearing play.
Service Limit:
Axial : 0.2 mm (0.008 in)
Radial : 0.05 mm (0.002 in)
Play
Play
Radial
Axial
A
B
B
C
D