My neighbor has a 2001 YZ125 with about half a season on it; bottom end never touched; original clutches. The case cracked on the left side immediately in front of the drive sprocket. It appears that the shaft that goes through to the clutch hub is putting pressure on the case. The case has a circular break (approximately 1-2 inches in diameter) that has gone almost full circle and has pushed the broken part out about 1/8 of an inch. (The area breaking out appears to be cast for the shaft/bearing.) The clutch hub has no play at all, but the outer basket has quite a bit of play. Any ideas on what could cause this?
Thanks
Thanks