EA81 crank to flywheel flange safety bolt?

[blakemorem]

All good Max with prop and Ethanol probably will drop the octane a little may run a little smoother and cooler. The refinery process has

[MadMuz]

I usually fit the prop random but only nipped up bolts, start the motor, turn off the motor, shift the prop to one down, 2 up, nip up.... start and stop a few more times so it is stopping in about the right place, then torque down and wire. I like to have the prop stop roughly like a Y so if one happens to accidently hinge a blade on slow down of rotors, there isn"t a prop blade standing there ready to get hit