^^2nd Paulie^^ The cover comes right off afted draining the oil, removing the kicker lever, and undoing 8 bolts. Usually, a kick starter that won't always engage has a broken or damaged pinion gear guide clip. Cheap and easy fix.
Here's a tip: If you warm the engine up first, and give the side cover a firm whump with a rubber mallet right in the center (after removing the bolts), the cover will often pop free and leave the gasket stuck to the case in one piece. The cover can then be put back on later without having to buy a new gasket. I hate re-using gaskets, but if you don't break it... shouldn't be a problem here.