Randy. You will need to heat the hub up some. Just use a propane torch. What I do is bolt an old prop to the hub, put some starter rope in the sparkplug hole to prevent the engine from turning over, and then unscrew the hub. I use JB weld to keep it on so it will take a little heat to get it to let loose. If the crank is not twisted, it may be easier to have it straitened without removing it from the engine. I have done most of them that way. Then you do not need to remove the hub at all.