Chevrolet 10 1971 Series, Chassis Service Manual

Page: 230 / 466

ENGINE FUEL 6M-8
Fig. H5— Accelerator Pump Override Adjustment
2. With parking brake on, and transmission in neutral,
start the engine and allow it to idle.
3. With the car on a level surface, the fuel level should
be on a level with the threads at the bottom of the
sight plug port (plus or minus 1/32 inch).
NOTE:
No float drop adjustment is required
on this carburetor.
4. If necessary to adjust (either or both bowls), loosen
inlet needle lock screw and turn the adjusting nut
Fig. H7— Secondary Throttle Valve Stop Screw Adjustment
clockwise to lower or counterclockwise to raise fuel
level, then tighten lock screw.
NOTE:
1/6 turn of adjusting nut equals ap­
proximately 1/16” fuel level change.
5. Allow a minute for fuel level to stabilize, and re­
check the level at sight plug.
6. Readjust, if necessary until proper level is obtained,
and install sight plug and air cleaner.
NOTE:
To assure proper secondary float level
setting it is advisable to accelerate primary
throttles slightly and hand operate secondary
throttle. This assures a stabilized secondary
fuel level.
CHOKE COIL ROD ADJUSTMENT (Fig. H9)
1. Hold choke valve open.
STOP SC R EW
Fig. H 6— Fast Idle Cam Adjustment (M ech an ica l) Fig. H 8 — W et Fuel Level Adjustment
10-30 CHEVROLET TRUCK SERVICE MANUAL