Do not attempt to adjust the carburetor alone. Perform all of the following operations in the order given:
1. Clean spark plugs and adjust gaps to .025" (.62 mm.).
2. Clean distributor breaker points and adjust to .020" (.50 mm.) maximum opening as described under Ignition Timing.
3. Check battery and ignition wiring, being sure all distributor wires are pressed down in their sockets.
4. Set ignition timing as described under Ignition Timing.
5. Adjust intake valve tappet clearance to .006" (.15 mm.) and exhaust tappet clearance to .008" (.20 mm.).
6. Turn carburetor idling screw "B" into its seat and back out exactly one turn.
7. Start engine.
8. Set carburetor throttle stop screw "A" so that engine idles at a speed equal to a car speed of 5 m.p.h. in high gear.