fcr throttle return spring

[canukracer]

Does anyone know if a different fcr carb throttle return spring is available? The thumb throttle is hard to push in after extended riding. Thanks.

[Silverfox@C&DRacing]

you might try a different thumb throttle I know the yfz are hard to push. :)

[canukracer]

Thanks -- i have tried a 400ex one thats seems the best but it is still to hard to push in. I found out about Lost Creek Cycles they said they can make it better,so i sent the carb to them-- we will see when i get it back. I can't wait to try it.

[jbplayfz450]

If you dont mind, please tell us how you like it when you get it back and how much it cost.
Thanks

[canukracer]

Works great!!
Was only 40 bucks.

[cdalexct]

after tearing into the carb the problem would appear to be there is simply to much preload twisted into the stock throttle shaft - spring setup. Preload appears to be in the order of 3/4 turn, reducing the preload by about half that can be easily achieved by attaching the spring to the second tab on the cable drum ! Simple and no cutting of springs (which actually increase the spring rate).

Less preload = significantly less effort to open and hold at part throttle.

http://nzjensen.co.nz/images/carbspring.jpg

GOT THIS FROM BLUETRAXX FORUM