TGB Blade 250 ATV Quad Service Repair Manual, Page 129Get this manual

TGB Blade 250 ATV Quad Service Repair Manual, Page 129

11CRANKCASE CRANK Check balance shaft bearing
Check bearings on right and left crankcaseRotate each bearings inner ring with fingersCheck if bearings can be turned in smooth and silent, and also check if bearing outer ring is mounted on gear tightlyIf bearing rotation is uneven, noising, or loose bearing mounted, then replace itSpecial tool: Inner bearing puller Bearing driver