The aluminum prop driver hub is locked on with a split cone and this one’s really on there. I don’t want to damage or distort it. I guess the best way to remove it would be a with a gear puller, which I don’t have. There is a deep groove in the side of the hub. Any tips that don’t involve prying, banging or special tools?

It’s a new/old RJL K61 I tried to bench-run. I think it hydro-locked, burped then froze. I suspect that the crankshaft is twisted at the weak point-where it’s ported. Crank will turn but it’s very stiff. I want to examine the damage and determine if it’s worth buying parts for -$30 for a new crank, may need bearings, etc.. I’ve had other engines do this but they just spit the prop at me with no damage the engine. If the crank is really this weak, I may not want to sink any money into this unit. Thanks for the help!