I'm wondering if any of you have experience with the OS prop nuts being crappy. I had the engine finally running well enough to start to break it in, when the entire freaking spinner assembly, prop washer, prop nut, and propeller separated from the engine as I increased the throttle. As you can imagine, it scared the hell out of me. Of course the engine over sped, so the engine stopped. The engine is a 40LA and am running a 11 X 5 prop.

The only thing I can guess happened was that the prop nut became loose or stripped. How tight should the nut be? I thought it was pretty tight, but you never know. Should I use a torque wrench? I really don't know. Any help you could give me, I would appreciate.

Thanks,
Jake