Carburettor
General description
The engine is fitted with the 21073-1107010 carburettor
(Fig.2-81) of emulsion, twin progressive throttle type. The carbu-
rettor features a balanced float barrel, a system of drawing
crankcase emission on the throttle body, a part throttle channel
heater and secondary barrel locking.
The carburettor has two main fuel jet systems for the primary
and secondary barrels, a primary barrel idling system with air cor-
rection, a secondary barrel air correction system, part throttle
enrichment (economizer), full throttle enrichment (econostat),
diaphragm-type accelerator pump, semi-automatic choke control
unit.
On the overrun an idling overrun control unit is actuated.
Refer to Table 2-2 for carburettor data.
46
Fig.2-81. Carburettor 21073-1107010:
1 - throttle valve lever; 2 - secondary barrel lock lever pin; 3 - primary throttle valve opening adjustment screw; 4 - screw for choke valve cable end fitting; 5 - choke valve
control lever; 6 - choke valve lever; 7 - choke valve return spring; 8 - diaphragm rod, pull-down unit; 9 - fuel shutoff solenoid; 10 - fuel supply manifold; 11 - bracket for
choke outer cable end fitting; 12 - secondary barrel adjuster screw; 13 - secondary throttle valve lever; 14 - secondary throttle lever; 15 - primary throttle return spring
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