It's not just a bolt and washer. The bolt would spin but it would not engage the gear.
Why would I waste my time buying a bolt and washer when it's not going to solve the problem.
If you look at the picture I attached there is a notch. Something needs to be secured into this notch in order to...
I took an actual picture of my go-kart and it looks like some kind of bolt with a stub off of the end is needed. I believe once you tighten the bolt it spins and the knob engages on the gear which will make the chain spin
I plan on doing that but I wasn't sure if it is a regular bolt or some kind of special bolt or washer needed.
Looking at parts online it seems there may be more needed than a bolt.