So here is what I have going on with my 455. It's been running fine all spring just towing around a cart for leaf/brush pickup. Last week I went to mow for the first time and the trouble started. Less than a minute after I pulled the PTO knob and started mowing the mower and tractor just shut down. Dead, no nothing when you turned the key. I found a blown 20 amp fuse and replaced it (not sure what was for). It immediately started right up and ran fine for about 8 minutes (not mowing, just idling and driving cart). Then it slowly died. It would restart but would not throttle up and was running very rough. I could see the throttle moving on the injection pump but the engine didn't respond just ran slow and rough. I was able to limp it back to the garage. It still starts right up, but runs slow, rough, and won't throttle up. The foot pedal also seems like it's bound up like you can't put any pressure on it as it has no give or take. The local JD dealer is of course booked for the next few weeks so I thought I would see what I can do. Their suggestion was to check wiring and the PTO clutch. I'm not quite sure where to begin if something mechanical failed first and caused the blown fuse or it it is just electrical related. It all started when I used the mower PTO for the first time this year however.
I'm new here, but I'm interested in any help of course and it is much appreciated! Let me hear your thoughts...