Was out test riding my new to me 04 txt280 pro after replacing an o-ring that was causing gear oil to leak from around the water pump housing. The bike was idling a bit high so I put it in neutral, and went to check the throttle cable to see if it wasn't binding somewhere. In the process I pulled on the cable a bit to hard and the rubber cover at the carburetor pulled the cable housing out of its seat and then the bike went revving like crazy. I couldn't get the kill switch to work as there was an obvious large amount of current running through which didn't allow it to work. I thought of putting it in gear but didn't feel like sending the bike on a ghost ride. As I kept trying to free the cable the bike finally sputtered out on its own. This was after it had been stuck at full throttle open in neutral for a good 15 to 20 seconds. Once it stopped I allowed it to cool for a while and was able to get it to start but not idle. The compression is noticeably not what it was. I'm pretty sure that I have blown the top end and it will need complete replacement.
Just want to get opinions from others out there. It seems pretty clear to me but wanted to check just to make sure I didn't do something else or there's something that I'm not thinking of that could have happened.
Let me know what you think.
I'm thinking I need a new piston, head, rings, and ring bearings. Ouch!