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1928 Cadillac - GM Heritage Center

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78 GASOLINE SYSTEM<br />

Automatic throttle.)<br />

Auxiliary air valve adjustment<br />

Auxiliary air valve thermostat<br />

-Throttle<br />

Fig. 1<br />

Sectional view of carburetor<br />

Auxiliary air<br />

valve spring<br />

Throttle pump<br />

Inlet valve<br />

Spray nozzle<br />

Tongue in center of slot<br />

Identification<br />

LaS-LaSalle<br />

C - <strong>Cadillac</strong><br />

Throttle pump and vent control thermostats<br />

Standard adjustment " — - <br />

7 turns counter-clockwise<br />

Throttle pump<br />

Fig. 2<br />

Choke rod setting<br />

Locking screw<br />

Stop screw £jgi<br />

Fig. 3<br />

Throttle stop screw adjustment<br />

. Adjust by springing bracket<br />

7/16 inch to 15/32 inch<br />

Fig. 5<br />

Right hand side of carburetor<br />

Balancing weight<br />

Tool 76037<br />

Loosen<br />

screws<br />

Fig. 7<br />

Throttle pump adjusting screw<br />

Lift cover just enough to unlock<br />

spring —do not stretch<br />

Fig. 4<br />

Float setting<br />

Adjust spring tension here<br />

Fig. 6<br />

Adjustment of automatic throttle<br />

Fig. 8<br />

Removing auxiliary air valve spring<br />

Plate 42. Carburetor and adjustments.

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