Carburetor starter: 1 - diaphragm; 2 - adjusting screw; 3 - diaphragm rod; 4 – air damper control lever; 4.1 - the lower profile of the groove of the lever 4 to limit the maximum opening of the air damper; 4.2 - the upper profile of the groove, which provides mechanical opening of the air damper; 4.3 - the edge of the lever 4 to ensure the starting clearance of the throttle valve of the first chamber; 5 - air damper; 6 - air damper lever; 7 - air damper return spring; 8 – air damper drive cable; 9 - adjusting screw for slightly opening the throttle valve of the first chamber; 10 - lock nut of the adjusting screw; 11 - throttle actuator lever; 12 - throttle valve of the first chamber; B - starting gap at the air damper; C - clearance at the throttle valve.
When the choke control lever is turned fully counterclockwise, the choke should close completely. If it does not close, remove the cause of the jam (or straighten the deformed damper).
When the air damper is fully closed, the throttle damper of the first chamber must be ajar by a starting clearance C equal to 1.1 mm.
The gap is measured with a suitable diameter wire.
This gap is adjustable by turning the wrench «for 8» (or slotted screwdriver) screw on the throttle lever.
With the air damper fully closed, press the trigger rod with your finger until it stops - in this case, the air damper should open slightly to the starting gap B, equal to 3.0±0.2 mm.
The gap is measured with a drill.
To adjust the gap with a wrench «for 8» loosen the locknut of the screw located on the cover of the starting device.
Inserting a thin slotted screwdriver into the slot, turn off (to increase clearance) or wrap (to reduce clearance) screw, then tighten the locknut.