Carburetor (left view): 1 - air damper; 2 - starting device; 3 - adjusting sensor - mixture quantity screw; 4 - accelerating pump; 5 - solenoid valve; 6 - carburetor cover
Carburetor (right side view): 1 - the first chamber; 2 - second chamber; 3 - accelerator pump sprayer; 4 - carburetor filter plug; 5 - throttle actuator lever of the second chamber; 6 - throttle actuator lever; 7 - throttle drive 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 that dirt remains in the jets and channels or jamming of the air and throttle valves is not eliminated, a complete disassembly of the carburetor is necessary.
Attention! Do not unscrew the screws securing the air and throttle dampers without extreme necessity and do not remove the dampers - their displacement can lead to jamming. Do not remove brass tubes pressed into the body.
1 - solenoid valve
2 - sealing ring
3 - idle fuel jet
1 - emulsion tube
2 - main air jet
If the main fuel jets cannot be shaken out, remove them with a thin, pointed stick.
1. Unscrew the solenoid 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. Take out an axis and remove floats.
5. Carefully remove the carburetor cover gasket.
6. Unscrew the needle valve.
7. Loosen the four screws securing the starter cover.
8. Remove the diaphragm cap.
9. Carefully detach the diaphragm from the cover and remove the diaphragm spring.
10. Remove the fuel filter cap.
11. Remove the plug with the filter inserted into it.
12. If you need to remove the air damper actuator lever, carefully unscrew the axle, while removing the locking ball with a spring from under the lever, and remove the lever.
13. Carefully pry the accelerator pump nozzles with a screwdriver and remove them.
14. Unscrew the four screws securing the accelerator pump cover and remove it.
15. Remove the diaphragm and accelerator pump spring.
16. Loosen the three screws that secure the power saver cover.
17. Remove the economizer cover, spring and diaphragm.
18. Remove the plastic disposable plug (if it is installed) and unscrew the quality adjusting screw (composition) mixtures. You can remove the plug with a corkscrew.
19. Unscrew the two emulsion tubes structurally integrated with the main air jets.
20. Remove the emulsion tubes.
21. Turn out the main fuel jets installed in the wells of the emulsion tubes.
22. Turn the carburetor body over and shake out the main fuel jets (see note).
23. Unscrew the wire fastening screw, gently pressing the tabs of its tip, remove the wire from the shank of the sensor-screw for adjusting the amount of the mixture and unscrew the adjusting screw for the amount of the mixture.