So over the past few years, I would have an intermittent starting problem with the L3700 SU. After reading all the typical problems that have happened with the L3400 ( basically the same tractor ). In many cases the issue was the safety switch below the steering column. So over the past few years I have replaced it a couple times. Well.. It wouldn't turn over again last week and again this past weekend. I had an extra safety switch and plugged it in..Still no start. Plenty of power. Solenoid clicks..Just no start. Tapped the starter with a hammer....bang...fires up. Starter is now ordered from my local dealer..about 150.00.