A guy at our field needed $20,000 worth of surgery to fix his hand after putting it through a prop mounted to an OS-46FX at full throttle. He is lucky to be able to use his hand at all. BTW, the AMA insurance payed the $10,000 that his health insurance did not pay.

This thread is an excellent reminder. Your engine may even fire if the glow lighter is not on if the engine is already hot enough.