lighter throttle spring?

[bbender85]

is it possible to get a lighter action out of the thumb throttle? adjustment, or lighter spring? i have to stop after a few hard laps cuz my thumb get so dern cramped. i may consider a twist throttle, but not for now.

is that a white 400ex? Post some pictures i'm curious to see. Try lubing the cable.

[bbender85]

silver.

http://i154.photobucket.com/albums/s248/bbender85/quad/DSC03408.jpg
http://i154.photobucket.com/albums/s248/bbender85/quad/DSC03413.jpg

[sc400ex_rider]

you can take the spring out of the thumb lever, then take the black cover off the carb, get a long screwdriver and find the throttle return spring on the throttle shaft. pry the spring tab away from the body und let it spring around about 1 turn and it makes a world of difference. the stock position is way to STIFF. make sure your cable moves freely.

[Mercedes]

^^^^^^^^^^^
I got the same advise from you sc400ex_rider and it made a world of a differance as you say.

I could not believe how hard it was compared to my friends z400 and rap 660.

Now its like butter