View of carburetor 21051-1107010 from the throttle drive side
1 – throttle valve drive lever; 2 – pin of the second chamber locking lever; 3 – adjusting screw for opening the throttle valve of the first chamber; 4 – air damper drive rod mounting screw; 5 – air damper control lever; 6 – air damper lever; 7 – air damper return spring; 8 – diaphragm rod of the starting device; 9 – electromagnetic shut-off valve; 10 – fuel supply pipe; 11 – bracket for fastening the air damper drive rod casing; 12 – adjusting screw of the second chamber; 13 – second chamber throttle lever; 14 – second chamber throttle actuator lever; 15 – return spring of the first chamber throttle valve
On VAZ-2105 cars produced since 1986, carburetors of a different design, model 21051-1107010, can be installed. The carburetor is an emulsion type, two-chamber, with sequential opening of the throttle valves.
The carburetor has a balanced float chamber, a system for extracting crankcase gases behind the throttle valve, and a second chamber lock.
Main metering system diagram of carburetor 21051-1107010
1 – main air jets with emulsion tubes; 2 – first and second chamber sprayers; 3 – fuel filter; 4 – needle valve; 5 – float; 6 – second chamber throttle valve; 7 – main fuel jets; 8 – first chamber throttle valve
Scheme of economizer and economizer of power modes of carburetor 21051-1107010
1 – throttle valve of the second chamber; 2 – main fuel jet of the second chamber; 3 – fuel channel from the float chamber; 4 – main fuel jet of the first chamber; 5 – first chamber throttle valve; 6 – vacuum supply channel; 7 – economizer diaphragm; 8 – ball valve; 9 – fuel jet of economizer; 10 – fuel channel; 11 – air damper; 12 – main air jets
Accelerator pump diagram of carburetor 21051-1107010
1 – sprayers; 2 – fuel supply ball valve; 3 – pump diaphragm; 4 – pusher; 5 – drive lever; 6 – pump drive cam; 7 – first chamber throttle valve; 8 – check ball valve; 9 – second chamber throttle valve
Carburetor starter 21051-1107010
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 – upper groove profile providing mechanical opening of the air damper; 4.3 – edge of the lever for providing the 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 adjusting screw; 11 – throttle valve drive lever; 12 – first chamber throttle valve
The carburetor has the main metering systems of the first and second chambers, the idle system of the first chamber with a transition system, the transition system of the second chamber, a forced idle economizer, a power mode economizer, an economizer, a diaphragm accelerator pump, and a starting device.
The carburetor calibration data are given in the table Calibration data for carburetor 21051-1107010.