I have a 2003 yamaha ttr125 and when I go to start it i have to give it gas to start, and when i get it to idle good, it later as it warms up starts to rev super high. Anyone know what it could be?
check the float valve. I have a raptor 80 that would do the same thing. I replaced the float valve and it seemed to help. Also on mine the spring for the idle screw was worn out and the screw would actually turn from the vibration. might need to replace the springs in the carb