I dunno, but dont recall a pedal spring on mine- the switch is kinda 'weird' to me as it always seems to have weight of pedal on it, yet only pushes offcenter on the pin a little to turn on lights...I think if the pushrod length were too long, you would not be able to pull up on the pedal to shut it off? Id say if theres no pedal spring(dont recall for sure, but dont think so) the new switch might be bad too?