Fast Idle Adjustment - Hudson 1953 Jet Mechanical Procedure Manual

2. Clearance between percolator rocker arm lip
and pump arm should be .005" to .015"
3. Adjust by bending the rocker arm, using Bend-
ing Tool J-1389 to make this adjustment.

FAST IDLE ADJUSTMENT

1. With fast idle cam in normal idle position,
tighten throttle lever adjusting screw (A), Fig-
ure 20, until it just seats against the cam.
FIGURE 20
2. Hold throttle lever closed an d pull cam back
until low step is against but not on set screw
(B), Figure 20.
3. Clearance between lower edge of choke valve
and air horn should be 5/8" as shown at (A),
Figure 21.
4. Adjust by bending fast idle link at offset.
UNLOADER ADJUSTMENT
I. Open throttle wide and check clearance be-
tween lower edge of choke valve and air horn.
Clearance should be 7/16" (A), Figure 21.
2. Adjust by bending cam (B) on throttle lever.
ENGINE TUNE-UP 20
FIGURE 21
IDLE ADJUSTMENT
1. Start engine and allow to warm up.
2. See that choke valve is wide open.
3. Set idle adjustment screw (A), Figure 22, 1/2 to
1-1/2 turns open to obtain smooth idle. Cars
equipped with Hydra-Matic; set idle at 490-510
R.P.M., 540 to 560 for standard transmission
and 575 for overdrive.
FIGURE 22