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!
Best tool is an impact driver, with the right drive, you hold the tool and hit the end with hammer to loosen tight screws or bolts, works like a dream! See link, any auto supply will carry them.