Quote:

A buddy showed me this. With rockers and spark plugs pulled. Get a small diameter rope a few feet long. Tie a knot in one end. Insert other end into the plug hole and keep feeding rope into hole. Rotate piston as far up into the cylinder as possible. Pop spring off and rope will keep valve up in head. This works good at the track if you have no air. Beep



used to do this with my little goped scooters, kept the piston from moving so i could take the flywheel nuts off!