Float Level Adjustment

Remove air cleaner and allow engine to idle for about half a minute. Stop engine. DO NOT TOUCH ACCELERATOR PEDAL OR THROTTLE LINKAGE. Disconnect fuel line to carburetor and remove float chamber and float.
Use vernier gauge to measure the distance between the top of float chamber and the surface of the fuel. This distance should be 0.96 ± 0.04 in. (24.5 ± I mm) for 1965 models and 1.04 +.04 in. (26.5 ± 1 mm) for 1966 and late Saab models.

Fig 1: Float Chamber Cover
Courtesy of SAAB-SCANIA OF AMERICA, INC.
If adjustment is needed, file down or remove washer under needle valve. Re-check fuel level and replace chamber cover and air cleaner.
NOTE: Measurement to be made at carburetor neck, as carburetors are inclined.