Carburetor (left view): 1 - air damper; 2 - starting device; 3 - mixture quantity adjustment screw; 4 - accelerator pump; 5 - electromagnetic valve; 6 - carburetor cover
Carburetor (right view): 1 - first chamber; 2 - second chamber; 3 - accelerator pump sprayer; 4 - carburetor filter plug; 5 - second chamber throttle actuator lever; 6 - throttle valve drive lever; 7 - throttle actuator sector; 8 - air damper drive lever
Note. It is recommended to wash the carburetor with acetone or a special carburetor cleaner and blow it with compressed air. If after this there is dirt left in the jets and channels or the air and throttle valves are not jammed, the carburetor must be completely disassembled.
Attention! Do not unscrew the air and throttle valve mounting screws or remove the valves unless absolutely necessary - their displacement may cause jamming. Do not remove the brass tubes pressed into the housing.
1 – electromagnetic valve
2 – sealing ring
3 – idle fuel jet
1 - emulsion tube
2 - main air jet
If the main fuel jets cannot be shaken out, use a thin, pointed stick to remove them.
1. Unscrew the electromagnetic valve. Remove the fuel jet from the valve body.
2. Loosen the five screws securing the carburetor cover and remove it.
3. Using a thin screwdriver or wire, push out the float axle.
4. Remove the axle and floats.
5. Carefully remove the carburetor cover gasket.
6. Turn out the needle valve.
7. Remove the four screws securing the starter cover.
8. Remove the cover with the diaphragm.
9. Carefully detach the diaphragm from the cover and remove the diaphragm spring.
10. Unscrew the fuel filter cap.
11. Remove the plug with the filter inserted into it.
12. If you need to remove the air damper drive lever, carefully unscrew the shaft, while removing the locking ball with the spring from under the lever, and remove the lever.
13. Carefully pry up the accelerator pump nozzles with a screwdriver and remove them.
14. Loosen the four screws securing the accelerator pump cover and remove it.
15. Remove the accelerator pump diaphragm and spring.
16. Unscrew the three screws securing the power mode economizer cover.
17. Remove the economizer cover, spring and diaphragm.
18. Remove the plastic disposable plug (if it is installed) and unscrew the mixture quality (composition) adjustment screw. The plug can be removed using a corkscrew.
19. Unscrew the two emulsion tubes, structurally connected to the main air jets.
20. Remove the emulsion tubes.
21. Unscrew the main fuel jets installed in the emulsion tube wells.
22. Turn the carburetor body over and shake out the main fuel jets (see note).
23. Loosen the screw securing the wire, carefully pressing the tabs of its tip, remove the wire from the tail of the mixture quantity adjustment sensor-screw and unscrew the mixture quantity adjustment screw.