1997-2001 Honda TRX250 Fourtrax Recon Service Manual, Page 326Get this manual
TROUBLESHOOTING
POOR PERFORMANCE AT HIGH SPEED
Possible cause
1Disconnect fuel tube at carburetor Fuel flow
Fue flows freely
Clogged fue fill cap breather
Faulty fu el valve Clogged fuel filter Clean
Clogged fuel line
2Remove he carbu retor and check-for clogg ing Not clogged
3Check va Ive ti ming Incorrect - Cam shaft not nsta li ed properlyCorrect
4Check ignition im
Correct