TGB Blade 250 ATV Quad Service Repair Manual, Page 128Get this manual
11CRANKCASE CRANK Crankshaft Inspection
Use thickness gauge to measure left and right clearance of connecting rod big endService limit: 0.6 mm
Measure point for the crank big end of the connecting rod
Measure the clearance of the big end at the vertical directionsService limit: 0.05 mm
Place the crankshaft on V-block, measure run-out of the crankshaftService limit: 0.10 mm