Contents: Setting the fuel level in the float…↓ Adjusting the starting device ↓ Checking the operation of the second…↓
Setting the fuel level in the float chamber
Check the correct installation of float 1 (Fig. 58) with gauge 4, for which install it perpendicular to cover 2 with gasket 3. The cover must be held horizontally with the floats facing up. There must be a gap of no more than 1 mm between the gauge along the contour and the floats. If necessary, adjust by bending the tongue and the float levers. The supporting surface of the tongue must be perpendicular to the axis of the needle valve 5 and must not have dents or nicks.
Adjusting the starting device
When turning lever 4 (Fig. 59) for controlling air damper 5 fully counterclockwise, the air damper should be completely closed under the action of spring 7. If the damper does not close, eliminate the cause of the jamming.
The original source is located on the website (VazBook)
Fig. 59. Starting device of carburetors 21051-1107010, 21053-1107010:
1 - diaphragm; 2 - adjusting screw; 3 - diaphragm rod; 4 - air damper control lever; 4.1 - lower profile of the groove of the lever 4 for limiting the maximum opening of the air damper; 4.2 - the upper profile of the groove of the lever 4, providing mechanical opening of the air damper; 4.3 - edge of lever 4 to provide starting clearance of the first chamber throttle valve; 5 - air damper; 6 - air damper lever; 7 - air damper return spring; 8 - air damper drive rod; 9 - adjusting screw stopper; 10 - first chamber throttle valve opening adjustment screw; 11 - throttle control lever; 12 - first chamber throttle valve.
With the air damper fully closed, manually press the rod 3 of the starting device until it stops. In this case, the air damper should open by 3.0 mm (starting gap B). If necessary, adjust it with screw 2.
The throttle valve of the first chamber with the air damper fully closed should be slightly open by 1.2 mm (starting gap C). For carburetor 21053-1107010 — 1.1 mm. Adjust this gap with screw 10.
Checking the operation of the second camera locking mechanism
Turn the air damper control lever counterclockwise until the damper is completely closed. Then turn the throttle actuator lever until the first chamber throttle valve is completely open, while the second chamber throttle valve should remain in the closed position.
Turn the air damper control lever clockwise and the throttle control lever until the throttle valves are fully open. If the second chamber throttle valve does not open, troubleshoot the problem. The cause may be a jammed second chamber lock lever or disconnected lock lever spring.