how for can you advance timing on a predator 212 cc motor without it kicking baack

Depends on the spindle slip - don't think about doing it unless you are absolutely sure. Its a little different for each one.
too many acronyms for different things that can advance your timing with the flywheel keys or get one of the adjustable flywheels (arc racing has one).
Thanks folk I put a 4 degree flywheel key in figured I would start there it does not kick back on crank guess I will see how it performs any suggetions is greatly appreciated