Sym GTS 250 Service Manual page 132

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11. Crankcase / Crank
Measure the clearance of the big end at the
vertical directions.
Service limit: 0.05 mm
Place the crankshaft on a V-block, measure
run-out of the crankshaft.
Service limit: 0.10 mm
50 mm 50 mm
Check crankshaft bearing
Use hand to crank the bearing to see it moves
freely, smoothly and noiseless.
Check the inner ring to see it links firmly on the
bearing.
Crank bearing
If any roughness, noise and loose linkage are
Out bearing puller
detected, replace the bearing with new one.
Caution
The bearing shall be replaced in pair.
Special tool:
Outer bearing puller SYM-6204001
11-5