fuel/air screw

[400excaleb]

my 400ex is running a little rich. it doesnt bog down very much, but it fouls plugs bad. do i need to adjust my fuel mixture screw.
is i need to where is it at.

[stc416rider]

u have to open up the carb to find it

mayb sumone else could find a pic

[400excaleb]

thanks for the help, do you think it will cure my problem. anyone
got a picture.

[JOEX]

Originally posted by stc416rider
u have to open up the carb to find it

mayb sumone else could find a pic
Wrong.

It is on the underside of the carb. It's easiest to access from the right side of the quad but looking from the left side the fuel screw is behind the bracket that holds the idle adjust screw.

What is your current jetting? Intake and exhaust mods? Air filter clean?

[400excaleb]

i have an full hmf exhaust, uni filter and yes it it clean. im not sure the jet cause i bought the pipe and jets used out of my friends, and he claims he forgot what kind of jet.