- two drills (or round caliber) ∅ 0.8 and ∅ 2.2 mm
- key "7"
- screwdriver
Remove the carburetor from the vehicle (see subsection 10.10.7.).
If starting a cold engine is difficult, it is necessary to adjust the starting clearances of the air and throttle valves of the first chamber.
1. Turn the choke control lever counterclockwise until it stops and hold it in this position. The choke should be completely closed.
2. Using the blade of a screwdriver 1, push the rod 2 of the starting device until it stops. This will cause the air damper to open slightly.
3. Check the gap between the bottom (in the direction of air flow) the edge of the air damper and the wall of the neck, inserting the shank of the drill into it (or caliber) diameter 2.2 mm.
4. If the gap is larger or smaller than the drill diameter, adjust it by loosening the trigger stop screw lock nut and...
5.... by turning the screw with a screwdriver. When screwing the screw into the diaphragm mechanism cover, the gap decreases; when unscrewing it, it increases. After completing the adjustment, tighten the lock nut securely.
6. Without releasing the choke control lever, turn the carburetor upside down with the throttle body facing up and check with the drill bit (or caliber) diameter 0.8 mm gap between the bottom (in the direction of air flow) the edge of the throttle valve and the wall of the first chamber.
7. If the gap is larger or smaller than the drill diameter, adjust it by turning the adjusting stop screw screwed into the throttle control lever. When you screw the screw into the lever, the gap decreases; when you unscrew it, it increases.