My son has a Husqvarna riding mower that has the mower removed cause it was rotten. He just wants to use it to haul stuff around his property. I can bypass the ignition switch and the engine turns over but if I try to start it with the ignition switch something is locking up. It must be a safety feature cause I can hear the shaft that would drive the mower lock up but I cannot figure out what is locking up or how to bypass it. Any of you guys have any experience with these riding mowers?