hard throttle

[fireman69]

been talking with a bunch of guys that race in texas......we were talking about how stiff the yamaha throttle is and they said swap out with a honda spring..........anybody do this or even know what spring they are talking about......i have thought about going with a 1/2 turn twist trottle....

 

[Glenn]

It's probably the return spring in the carb (not sure if that's the exact name for it.) I've heard of guys doing this on the 450 Yamaha race quads as well.