Keep the starter and flywheel together. 6 Volt starter fits the 6 Volt flywheel. And works just fine on 12 Volts if you change over. Both flywheels bolt to the 235 so no issue there. Keep the clutch with the bell housing and the flywheel. Fit issues go away. The "seal" on the oil cannister is for the top. Big round gasket that seals the top to the canister. I don't recall any kind of rubber seal inside the cannister. Should be a little hole in the standoff tube about 1/2 way down(or up) That must be clear. If the canister was that dirty it is worth checking. Grease gun hose...never thought about those. Might work just fine. Should hold the pressure and already oil proof. Might get soft when the oil get warm...just keep an eye on them and let us know how they work out. This is a link to a Tech Tip for the oil filters:
http://www.stovebolt.com/techtips/engines/oil%20filters/index.html Can be helpful to find out what you have. Nice to get the right filter element when you put it back in service.
