This seems kinda smart. So, the teams are owned by an older guy usually. That older guy usually hires a couple younger guys to help him run the tent program. So, these guys do everything like helping load/unload, set up karts, change tires, fix stuff etc. Basically get the team through the day.
These guys are usually ex-racers who are in their 20’s. In the big teams, it’s probably more “pro” and the mechanics are probably full-time employees that are salaried, I am guessing.
But, all these club races have teams servicing them and I bet if you were to hang around enough and be useful enough… maybe you could convince one of those team owners to give you some work.
The issue is that you don’t have prior experience. Maybe chutzpah can get you past that hurdle.
(Hey Mr. Doty I brought you a Grande Americano, just how you like it. Got any tires that need mounting?).