Just place the flywheel back on the shaft and tighten the retaining nut, it does not need to be pressed back on and the nut should easily get it tight enough. DON'T hammer on it! Hammering the flywheel on is not necessary and could very easily ruin the crankcase because the crank has very little in the way of thrust bearings, it does not take much end thrust or hammering to cause serious damage.
Originally Posted by Mac88
Has anyone ever heard of putting POR-15 inside a compressor tank to clean out rust and coat the side?
I had a discussion about this very idea recently with a guy who wanted to treat the inside of his tank with a POR 15 gas tank kit and although I have never tried it I think it should help, I doubt it could hurt anything except your wallet. My concern if it were my tank is how much rust is in there? If that thing has heavy rusting inside you really should pressure test it (hydro, NOT air pressure!) before using it, a rusty tank can be deadly.