This is just a message to say thanks to those of you that posted since I had similar woes w/ my 4300. This is I would not have figured out by myself and the parts guys at JD didn't know about this either. I was surprised the fuel shut off solenoid would show it was getting power with a problem before the solenoid in the circuit and I would have ended up paying $140 for a new solenoid for no reason.
I wasn't hearing the click that I normally did after turning the key before hitting the starter. After looking here I started with the most economical fix, the thermister. The trouble was I did not have any butt connectors on hand to tie in the thermister so tried using electrical tape as a quick fix, obviously it did not work.
The test light showed the solenoid getting power so I assumed it was a bad fuel shut off solenoid. I took it off, she fired up. After folling instructions from another thread I ended up pushing in the piston on the solenoid squirting oil out the hole and cleaning it off and I then put the solenoid back on to make sure that wasn't the fix. It was a no go. I took the solenoid back off and checked the resistance, 25 ohms so it should be working. I then addressed my sloppy thermistor replacement which was a royal pain in the arse, put the solenoid back in place and we've been in business since.
Thanks for all the help, evidentially this has been a problem for quite a few people but neither JD parts guys were steering me in the right direction before checking here.
