Yes, I use Threebond w/o paper gaskets on all left side engine covers (alternator and shifter cover).
Works great for me. The best gasket sealer I have ever used. I have never found any parts of Threebond in the oil or the engine case. It stays where you put it on.
On the clutch cover you need a paper gasket, otherwise your kickstarter will not jump back. There you need
the thickness of a paper gasket.
just forgotten to say,.....I let it dry for a day before I fill oil in the engine.
nippon