Willys MB - Adjust Carburetor; Adjust Distributor to Correct Timing

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AD JUST DISTRIBUTOR TO CORRECT TIMING. Loosen the bolt
in the advance control arm, and turn the distributor clockwise to
advance the ignition timing. Turn the distributor counterclockwise
to retard the ignition timing. When the correct timing is obtained,
tighten the bolt in the advance control arm. If the correct timing
cannot be obtained by turning the distributor, set the timing as out-
lined in paragraph 19 e, but do not remove the distributor.
c. Adjust Carburetor.
Start the engine, and allow it to run until
it reaches normal operating temperature.
Turn the idle fuel adjust-
ment screw (fig. 1) clockwise, or counterclockwise, until all indica-
tions of vibration and roll are eliminated from the engine.
Set the
idle speed adjustment screw so that engine will idle at 400 revolutions
per minute.