Pulley idler went out on my craftsman 46". I ordered a new one and put it on with a new keeper, belt, idler. My question is how tight should I tighten the nut? If it's too tight the pulley doesn't spin. Mower is a Sears Craftsman 22 hp electric start 46" mower automatic garden tractor. Serial #100200A010684. It is old but has been a good one. Model # is 917273080
Last edited: