hello fellas. I purchased my Kazuma Falcon 90 back in May for my son and it has ran really good up until this past weekend. I can still get it to start by chokeing it but it won't idle and bogs when I take the choke off. It will run good at WOT but just won't run at slow or idle speed. I took the carb off and cleaned it but would like to know what the adjustment (from seat) on the two screw adjustments on the right (if your sitting on it) side of the carb are? I'm wondering if something is out of whack. Anyone have that information? I've since drained the gas put in new gas, spark is good and everything seems to be in order.

THX for any help.

 

The screw with the spring behind it is the idle screw. The one to the left and lower from the idle screw is the air screw. You may need to turn the idle up a tad.

 

Also I don't know if your quad has one or not, but some atv carbs have a vent tube coming from the carb that leads to nowhere. If this gets clogged with dirt, it will cause issues like this. Take it off the carb and blow some air through it.