Pic. 2-90. Setting the fuel level in the float chamber: 1 - carburetor cover; 2 - needle valve seat; 3 - emphasis; 4 - needle valve; 5 - ball of the locking needle; 6 - draw fork of the valve needle; 7 - float bracket; 8 - tongue; 9 - float; 10 - gasket
The distance between the float and the gasket 10 adjacent to the carburetor cover (size A), should be 6.5±0.25 mm. This size is adjusted by bending the tongue 8. In this case, the supporting surface of the tongue must be perpendicular to the axis of the needle valve and must not have notches and dents.
Check with caliber 67.8151.9505. Hold the housing cover vertically so that the tongue 8 of the float lightly touches the ball 5 of the needle valve 4 without sinking it.
The value of 8±0.25 mm of the maximum stroke of the float is adjusted by bending the stop 3. The yoke 6 of the needle valve should not interfere with the free movement of the float.
When installing the carburetor cover, check that the float does not touch the walls of the float chamber.
Note. The float setting should always be checked when replacing the float or needle valve; in the latter case, the valve seal must also be replaced.