Carburetor cover parts 21051-1107010
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 - starter cover; 9 - idle fuel jet; 10 - electromagnetic shut-off valve; 11 - plug; 12 - carburetor cover; 13 - fuel filter; 14 - air damper; 15 - fuel supply pipe; 16 - air damper axis with a lever; 17 – a ball of fixing of the lever of management of an air damper; 18 – air damper control lever; 19 - the axis of the lever; 20 - bushing for fastening the air damper drive rod
Carburetor body parts 21051-1107010
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 - sprayers of the accelerator pump with a fuel supply valve; 11 - sprayers; 12 - main air jets with emulsion tubes; 13 - main fuel jets; 14 – an arm of fastening of a cover of draft of a drive of an air damper; 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 – second chamber blocking lever; 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 adjusting screw (composition) idle mixtures; 28 - carburetor body; 29 - adjusting screw for the amount of idle mixture; 30 – electric wire of the forced idle economizer limit switch; 31 - carburetor heating block
1. Unscrew the screws securing the carburetor cover and carefully remove it so as not to damage the gasket and float.
2. Disassemble the carburetor cover:
- using a mandrel, carefully push out axle 1 (see fig. Carburetor cover parts 21051-1107010) float 3 from the racks and, without damaging the reeds of the float, remove it;
- 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 electromagnetic shut-off valve 10 and remove the jet 9;
- unscrew the axle 19, remove the air damper control lever 18, disconnect the spring of the air damper control lever. If necessary, turn out the screws of the air damper, remove the damper 14 and axle 16;
- disassemble the diaphragm trigger by removing the cover 8 of the trigger assembly with the adjusting screw 7. Remove the spring 6 and the diaphragm 5 with the stem.
3. Disassemble the carburetor body (see fig. Carburetor body parts 21051-1107010) for which do the following:
- remove cover 3 of accelerator pump with lever 2 and diaphragm 1;
- remove the nozzles 10 of the accelerator pump and the nozzles 11 of the first and second chambers;
- 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 adjusting screw 29 of the idle mixture amount;
- having broken the plastic plug 25, unscrew the adjusting screw 27 of the quality (composition) idle mixtures;
- remove the power mode economizer cover 5, diaphragm 6 and spring;
- unscrew the fuel jet 7 of the power mode economizer, the main air jets 12 with emulsion tubes and the main fuel jets 13 of the main metering systems.
4. If necessary, unscrew the screws securing the throttle valve 23 of the first chamber, remove the valve and remove the axle 19 complete with drive levers. After removing the lock washer and unscrewing the fastening screws, remove the throttle valve 24 of the second chamber and remove the axle 22 of the damper.
5. Assemble the carburetor in reverse order. When tightening the screws for fastening the throttle valves, emboss the screws along the contour on a special device that excludes deformation of the axes of the dampers.