Checking the corrector of the qualitative composition of the mixture
See the relevant paragraph in the subsection «Solex carburetor «Zenith» 2B4».
Warning. The protrusion of the corrector needle should be within 5±0.5 mm.
Actuator Protrusion Check
Remove the carburetor cover.
Remove the hatch on the carburetor body. At a coolant temperature of plus 20°C, the gap «X» should be within 4-6 mm.
Checking the throttle actuator (see photo above and subsection «Solex carburetor «Zenith» 2B4»).
Check Spring Preload: Size «A» should be equal to 23 mm. If necessary, achieve the correct size with the adjusting nut 1.
Check clearance «IN» between the throttle control lever and the stop screw, which should be 3.7 mm. If necessary, set the specified clearance by changing the length of the threaded rod.
Checking the fuel level in the float chamber
Remove the carburetor cover and gasket.
Measure with a ruler the gap between the highest point of the float and the mating surface of the carburetor body, which should be equal to 30 mm. It is adjusted by bending the tongue and float levers.
Engine idle adjustment
See the relevant paragraph in the subsection «Solex carburetor «Zenith» 2B4».