r97
Measure twice cut once
the kart came out great!
looks like it has some good power!
i had the exact same problem. what i did was (using no lock-tite (but maybe a bit of Teflon tape (its what i had on hand))) then i just simply tightened the thing as much as i could. you will notice while you tighten the bolt the engine will wan't to spin. you can pull the recoil until it engages to prevent that, or use either a strap wrench or you hand to just hold on to the pulley itself. having not thought of the recoil idea, and not owning a strap wrench, i held on with my hand, which worked excellently (and did fix the problem) until my hand slipped and my pinkie finger got jammed between the sharp edge of the milled aluminum back plate, and the driver which was bolted securely to the crank. the result of that was getting my finger nail sliced in half, i have just about heeled now, only took 5 months.
only thing you need to know is that you should pull the recoil, and really tighten the bolt at the same time.