So I'm putting the kart back together and I want to make sure I have the TC right. How do these pics look? There's supposed be a spacer between the edge of the jackshaft engine side, right? For some reason, I feel that there was a lot more slack in the belt before..but it's been a while, so I may be wrong.
Car oil, no. you need 30 weight oil. Briggs & Stratton put out an oil made for these engines; other companies put out slightly less expensive ones. Check Harbor Freight.