fine tune adj help

[franciscoluis]

hi there.

I just noticed that my 400ex fail a little when it is in idle, like mmm.... a little dirt in the carb you know.
I was wondering if you could give me a little help here, i was thinking in the air/fuel screw. But really don't know.
Thank you all.
Francisco.

[JOEX]

Make sure everything is clean...Air filter, carb, spark plug....
Adjust the big screw on the left side of the carb in front of the bowl to adjust idle.

Adios,
Joe

[300exazzkikr]

try adjusting your throttle cable.

[franciscoluis]

Thank you
But my idle screw is fine, its just that when its in idle, the motor sounds like suddenly lost the electic power or something like that.
it fails but not alwais, just some times.
any input will be great
Thanks.