I posted a topic about my 04 ds 650 popping under the seat.(It was coming from the air box).
I received a post back saying to turn the air/idle screw 1/4 turn out and the popping would go away. The air/idle screw is recessed up in toward the output side of the carb. It is directly underneath.

If the screw is turned all the way in can someone please tell me how many turns the screw should be turn out from the factory. ????????????
I turned the screw the wrong way and ended up loosing my spot. I have no idea where to set it. Thanks, D

 

I had a few pops coming through my airbox on my first trip out with my 04 also. To set the air idle screw properly you can do the following.

1) Make sure you DS is warmed up and idling properly (~1300RPM)
2) Lean out the air/idle (clockwise) until the idle starts to dip.
3) Shut the bike off and record how many turns out the idle started to dip.
4) Repeat the procedure above but this time richen the air/idle (counterclockwise) until the idle starts to dip
5) Shut off and record how many turns.
6) Calculate the midpoint of these two settings and set the air/idle at that point.

 

Ok I will try that. Do you start from the getgo with the screw all the way in ?

 

Start around 3 turns out and go from there in both directions. Move it slowly in 1/4 or 1/2 turn increments.

When your finally done and calculate the midpoint you should be somewhere around 3-31/2 turns out. I am at 3 1/2

 

Thank you !