Turn all the way in then about 1/4 turn out. This should get you close may have to twik alittle.
If the Polaris 50 Scrambler only runs for about five seconds and shuts off, it could be a problem with the idle setting. This type of ATV has an adjustment screw on the carburetor for turning the idle up. This should fix the problem.
The black Phillips head screw on the rear of the carburetor adjusts the airflow. You need to have it about 4 full turns into the hole and that's factory. To set the carburetor, just continue to screw in the air screw until the bike runs properly. In your climate, you will hear and feel the bike get smoother as the carburetor gets to the proper setting. Try it out and have a blast!!
It's a flex shaft with a Phillips #2 head, connected to the carburetor. It could be dangling because the mount is wire junk.
The only setting is one screw on the top of each carb its the mixture screw and should is 1.5 turns out by default.
Stock setting is Idle screw - 2 1/2 - 3 turns out Air screw - 1 1/2 -1 3/4 turns out
The 1988 Honda 350 carburetor adjustment screws are on the side of the carburetor. There also is an adjustment screw on the very top of the carburetor.
In most cases, you can locate the carburetor screws in the front of the carburetor. Sometimes you have to remove the air gilter to get to to the carburetor.
With a screw driver
You can adjust your VW carburetor by using the adjustment screws. There is an adjustment screw to adjust the flow of fuel. There is an adjustment screw to adjust the flow of air.
You haven't really stated what you are trying to accomplish.there is a set screw on the bottom of the carb on your left as you are sitting on the quad you can adjust the idle up and down using this it changes how lean you are running.
Locate the drain screw on the right of the transmission. Drain oil. Replace screw, then go to the left side and unscrew the fill screw and use a funnel to fill with Polaris tranny oil until its full to the screw hole.