IDLE AIR ADJUSTMENT SCREW
The larger outer diameter of the screw head counteracts the effect of soiling in the adjustment screw channel. Furthermore, the screw is longer and easier to access for setting the idle mixture on the carburetor.
The larger outer diameter of the screw head counteracts the effect of soiling in the adjustment screw channel. Furthermore, the screw is longer and easier to access for setting the idle mixture on the carburetor.
