Disassemble the carburetor cover. Using a drift, carefully push axle 1 out (see fig. 9-11) floats 3 from the racks and, without damaging the tongues of the floats, remove them.
Pic. 9-11. Details of carb cap 21073-1107010: 1 - float axis; 2 - needle valve; 3 - float; 4 - gasket; 5 - diaphragm of the starting device with a rod; 6 - spring; 7 - adjusting screw; 8 - cover starting device; 9 - idle fuel jet; 10 - electromagnetic shut-off valve; 11 - cork; 12 - carburetor cover; 13 - fuel filter; 14 - air damper; 15 - fuel supply pipe; 16 - axis of the air damper with a lever; 17 - ball for fixing the air damper control lever; 18 - air damper control lever; 19 - lever axis; 20 - bushing for fastening the air damper drive rod
Remove the cover gasket 4, unscrew the needle valve seat 2, unscrew the fuel supply pipe 15 and remove the fuel filter 13.
Unscrew the housing of the idle fuel jet with the solenoid shut-off valve 10 and remove the jet 9
Unscrew the axle 19, remove the ball 17 with the spring, remove the air damper control lever 18, disconnect the spring of the air damper control lever. If necessary, unscrew the screws securing the air damper, remove the damper 14 and axle 16.
Disassemble the diaphragm of another starting device by removing the cover 8 assembly with the adjusting screw 7. Remove the spring 6 and the diaphragm 5 with the stem.
Disassemble the carburetor body (pic. 9-12), for which follow the steps below.
Pic. 9-12. Carburetor body details 21073-1107010: 1 - accelerator pump diaphragm; 2 - accelerator pump drive lever; 3 - cover; 4 - accelerator pump drive cam; 5 - power modes economizer cover; 6 - economizer diaphragm; 7 - economizer fuel jet; 8 - economizer valve; 9 - check valve of the accelerator pump; 10 - accelerator pump sprayer with fuel supply valve; 11 - sprayers of the main dosing systems; 12 - main air jets with emulsion tubes; 13 - main fuel jets; 14 - bracket for fastening the shell of the draft of the air damper drive; 15 - adjusting screw of the second chamber; 16 - adjusting screw stopper; 17 - stopper cap; 18 - adjusting screw for slightly opening the throttle valve of the first chamber; 19 - axis of the throttle valve of the first chamber with drive levers; 20 - lock lever of the second chamber; 21 - lock lever spring; 22 - axis of the throttle valve of the second chamber with a lever, 23 - throttle valve of the first chamber; 24 - throttle valve of the second chamber; 25 - plug quality adjusting screw (composition) mixtures; 26 - return spring of the throttle actuator lever of the second chamber; 27 - quality adjustment screw (composition) idle mixtures; 28 - carburetor body; 29 - adjusting screw for the amount of idle mixture; 30 - electrical wire of the forced idle economizer limit switch; 31 - carburetor heating block
Remove cover 3 of accelerator pump with lever 2 and diaphragm 1.
Take out the atomizer 10 of the accelerator pump and the atomizers 11 of the first and second chambers. Take out the atomizer 10 only by the atomizer body.
Unscrew the nut of the throttle valve axis of the first chamber, remove the cam 4 of the accelerator pump drive and the washer.
Unscrew the fastening screw, remove the electrical wire 30 from the adjusting screw 29 in the amount of idle mixture and unscrew the screw 29. Remove the plastic plug 25 with a corkscrew and unscrew the quality adjusting screw 27 (composition) idle mixture.
Remove the power economizer cover 5, diaphragm 6 and spring.
Turn out the fuel jet 7 economizer power modes.
Turn out the main air jets 12 with emulsion tubes and the main fuel jets 13 of the main metering systems.