I just removed the prop and nut and it does not flip. The prop hub moves back and forth and it makes the popping noise that it supposed to when it flips over but thats all it does is moves back and forth and then stops.

Took the glowplug off, the hub moved back and forth a few times making the popping noise like it was trying to flip over, now it don't move at all.

So the engine is no good even though it was never used. And nobody takes returns on engines so I am stuck. And I don't know about any warranties but I am sure I am out of luck there too.