Small Engine Troubleshooting Problems? Ask a Mechanic Now.
Welcome to JUST ANSWER small engines, let me try to help you !! I don't know it all, but maybe together we can get you a satisfactory answer!
Crankshaft has no thrust, do you have any shims inside for thrust? Need to have less shims!
See if you have thrust , before case comes together, then check as you tighten.