I have a 2001 yamaha warrior that has spark, compression at 120, and fuel but wont start or even backfire. I even tried starter fluid to see if it would have a faint heartbeat but nothing. It seems to be out of time. I installed a new piston and rings in the quad. When I tore it down the piston was TDC and the cam timing was on the mark. Put it back together that way also. Just seems like the quad is 180 degrees out if that is possibly. Valves are set exhaust to .015 mm and intake to .005mm. Any help or ideas would be appreciated. Thanks.

 

I'm having same problem did you ever figure it out