I had a post about not being able to start my TC40D. Received some great input that told me what fuse was the problem. Replaced the fuse and blew the new fuse. Took the starter out and tested it "on the bench" or more appropriately on the ground using jumper cables and it did not work. Messed around with it and it started working. Put it back on and it worked fine. Only 2 months over 3 yrs old! Stopped working again later that day. Ordered a new starter ($380, Ouch!!!) and put it in this morning. I was so excited, put the tools away, cleaned up and jumped on the tractor, turned the key and "pop", blew another fuse. Arrrggghhh!
Long story short, after a couple hours pouring through the new repair manual I bought along with the starter and doing some measuring with a DMM and a couple quick calculations I think I found a engineering fault. Don't know enough to know if it is just goofy, stupid goofy, idiotic or being penny wise and pound foolish stupid (or maybe I'm all wet and I'm the stupid one). The battery was weak. If the battery is weak then not enough voltage is available to get the solenoid on the starter actuated yet the voltage being drawn during that time of trying to get the solenoid actuated is much greater then 7.5 amp fuse (which seems to work like the old "slow-blow" type).
Don't know if this is your problem or not but you might want to check. I checked by using jumper cables from the car battery and it started right up (after replacing the fuse again).
Don't yet know if NH will take the starter back but if they don't then I may have a starter for sale!? /w3tcompact/icons/frown.gif/w3tcompact/icons/crazy.gif
NH will hear from me if they don't - since it is an engineering fault that caused me to believe the starter was bad - its counter intuitive, weak battery blows fuse but strong battery is fine?/w3tcompact/icons/crazy.gif
I'll start another thread with my story and the quick calculations I did that make me believe this is an engineering mishap.