Have an old Wacker weed blower and the nut keeps coming loose after about 30 minutes of use. The nut holds the flywheel in place. Eventually I got tired of loosening the 10 screws on the bottom cover to tighten it every time. I put a dense Permatex (blue) on this thread and there were no problems. I check every 30 minutes of use. After being tightened three times, the nut is still tight, although it is intended to rotate with the shaft. Problem solved. I'll check it out in about 5 more uses but I think I'm fine for now. Basically the thing works.
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