Anyone know an easy way to remove the centrifugal clutch from an Eiger?

It's bolted right to the crankshaft, not sure if there's a good way to hold the shaft without taking the other side off. The pull starter cup is there on the other side and would be easy to hold with a bar, but I doubt it could handle being used as the spot to hold the crankshaft to remove the bolt that holds on the centrifugal clutch. According to the manual, that bolt is supposed to be at 100 ft-lbs.

Has anyone else here had either clutch off?