ORIGINAL: CGRetired
With regard to removal of the plug ignitor, I was taught to do so from behind, and that's what I do. I also teach students to do this. The only thing I do from the front of the engine is start the thing. All else is done from behind.
Unfortunately, the injury I experienced was with an electric, and that was because I put the prop on and did the initial motor start process (new plane process) without even thinking the transmitter throttle setting was reversed. Five stiches.
Live and learn. That will NOT happen again to me.
CGr.
I did that too with a 350 watt motor with an apc 13x4 prop. It was my lucky day since the motor rotation was backwards, so the plane took off away from me. The cardboard box that the plane was resting on was converted to confetti. No stitches for me thattime, but a new pair of underwear was required.