I bought my riding mower from my neighbor and he has it down for by passing all the safety controls on them. I can get off my mower while its running. I like it that way. When I buy new tools I reverse the springs for a saw guard or take the safety off a nail gun so I can just pull the trigger to shoot. They are actually safer the way I use them.the weak point of the whole shredder is all the controls. Kind of like a new riding lawnmower, the engine should last a long long time but the safety controls such as the seat switch, blade switch, gear switch, tip over switch, low oil switch, are the ones that cause 90% of the problems.