Removing the carburetor
1. Remove the air filter.
2. When the engine is hot, relieve the pressure in the engine cooling system by carefully unscrewing the cap on the expansion tank.
3. Remove the coolant supply hoses from the air damper housing, lift them up and plug them with plugs.
4. Remove the wire from the idle speed control solenoid valve.
5. Remove the starter cable.
6. Remove the throttle cable by sliding the spring clip and removing the cable end from the ball head on the throttle lever and unscrewing the bracket.
7. Remove the fuel supply hose to the carburetor. If there are clamps on the hoses, cut them off and install clamps that are tightened with a screw instead.
8. Remove the vacuum hose.
9. Unscrew the nuts securing the carburetor to the intake manifold, remove it and cover the hole in the intake manifold with a clean rag.
Disassembling the carburetor
10. Remove the carburetor from the engine
11. Unscrew the 7 screws securing the carburetor cover and remove the cover with the gasket.
12. Remove any remaining fuel from the float chamber.
13. Remove the mixture quality screw plug and unscrew the screw. The air valve must be closed.
14. Unscrew 4 screws and remove the main fuel jet housing, the ball and the weight of the accelerator pump delivery valve, for which it is necessary to turn the carburetor over.
15. Remove the float, its axis and needle valve.
16. Unscrew the 4 screws and remove the air valve control diaphragm housing, return spring, spring plate and, after removing the retaining ring, the diaphragm.
17. Turn the carburetor over, unscrew the 3 screws and remove the accelerator pump diaphragm.
18. Clean all channels and cavities of the carburetor with compressed air.
Carburetor purging
19. Remove the ground cable from the battery and the air filter.
20. Thoroughly wash the outside of the carburetor, unscrew the 7 screws and remove the carburetor cover.
21. Remove any remaining gasoline from the float chamber.
22. Blow out the float chamber with compressed air, being careful not to direct the stream directly into the valve control nozzle.
23. Install the carburetor cover.
24. Check idle speed and CO content.
25. Assembly is carried out in the reverse order of disassembly.
26. The carburetor is installed in the reverse order of removal.
27. After installation, adjust the idle speed and CO content.