Abstract: A variable position flywheel lock for a rotating engine shaft terminating in a flywheel having plurality of radially spaced slots around the circumference. The flywheel lock includes an elongated base positioned perpendicular to a radius of the flywheel. A body is engaged with the base and is movable vertically toward or away from the base. A top is engaged with the body with the top movable parallel to the base. A toothed device extends from the top and is engageable with the radially spaced slots in the flywheel to hold the flywheel in a desired position and lock it in place.