KYMCO Mongoose/KXR 250 - Page 140

11.CRANKCASE/CRANKSHAFT/
BALANCE SHAFT
11-5
Mongoose/KXR 250
Measure the connecting rod small end free
play (A).
Out of specification (0.8 ~ 1.0 mm) →
Replace the crankshaft.
Measure the crankshaft run out (B).
Service Limit: 0.10mm replace if over
Measure the connecting rod big end side
clearance (C).
Service Limit: 0.6mm replace if over
Measure the crank width (D).
Out of specification (55.15 ~ 55.2 mm) →
Replace the crankshaft.
Turn the crankshaft bearings and check for
excessive play.
Measure the crankshaft bearing play.
Service Limit:
Axial : 0.20mm replace if over
Radial : 0.05mm replace if over
Play
Play
Radial
Axial
A
B
B
C
D