Advertisement
FAST IDLE ADJUSTMENT - PAGE 9
If the carburetor has been removed from the
engine use the following procedure for setting the
"Fast Idle Adjustment."
1. With the choke valve tightly closed and the fast
idle screw on the high step of the fast idle cam,
Figure 1, there should be .054" clearance between
the throttle valves and bores of carburetor oppo-
site side from idle port hole.
FIGURE 1
2. Turn the fast idle adjusting screw (high step of
cam) until specified clearance is obtained.
3. Install carburetor on engine.
4. Start engine and allow engine to warm up.
5. Hold the choke valve open and press down on the
fast idle cam until idle adjusting screw (A) is
seated on the lower step of second notch of cam
(B).
6. While holding screw (A) against the cam as in
Paragraph 5, turn idle adjusting screw until engine
RPM reaches 700 for warm climate and 800 for
cold climate.
NOTE: If fast idle adjustment is checked with the
carburetor installed on the engine, use para-
graphs 4, 5 and 6 only.
SLOW IDLE ADJUSTMENT - PAGE 4-9
1. Start engine and allow engine to warm up.
NOTE: Check choke valve (must be wide open
when engine is warmed up).
2. With engine up to normal operating temperature
turn adjusting screws (A) Figure 2, clockwise into
their seats alternately an d back out counter-clock-
wise 3/4 of a turn.
FIGURE 2
3. Adjust the throttle stop screw (B) so that the
engine idles at 560 RPM. (If car is equipped with
Vacumotive Drive or Drive-Master, set idle at
580 to 600 RPM.)
4. Readjust idle adjusting screws (A) for a smooth
idle. On 6 cylinder engines the normal setting is
1-1/4 to 1-3/4 turns open; on 8 cylinder engines 1
to 1-1/2 turns open.
CARBURETOR - PAGE 4-10
Paragraph 9 should read: Remove pump discharge
valve retainer plug and check valve; Figure 16
should show a triangular shaped valve instead of a
ball.
17
Advertisement
