I have a beautiful GT18 that is all original and has never had a mower deck on it. It came with a 8 hp. Craftsman pull behind tiller and was the only thing it was used for. It has very few hours on it and runs like a clock. Now the problem. Every once in awhile the starter refused to pull in. If I tapped on it while turning the key it would work and start right up. About half the time the tap wasn't necessary. So last summer I decided to pull the engine. Upon inspection the starter looked fine so cleaned everything up and lubed the bushings and then re-installed it. Worked like a charm all summer. Went out today to start it and nothing. If I tap on it sparks come out from the seam where the front housing meets the main body and it also arcs from the main body to the shroud.
Things I've tried. First I tried using jumpers from a good battery to the starter side of the solenoid and ground directly to the frame of the starter Nothing. Tapped on the starter while jumping and nothing again. The solenoid is closing and there is good voltage to the starter.
Looks like I'm going to have to pull the engine again. This time it is going to be a different starter. Some time in the last few months someone else ran into this same problem. I hope they were able to find a cure on the first try.
Edited by Cvans, March 28, 2015 - 10:31 PM.