[shadetree]

what ended up being your issue? My 2007 rancher is doing the same thing. When it dies the oil and over heat light come on, I shift back to Nuetral and start back up and no warning lights come on and it rides fine for 5-130 mins then does it again.

this post is old, I hate it when they never update what the problem was ?. as for your problem ?, my first guess would be the fuel pump, most trx420's had an issue with a defective fuel pump.