Initial Choke Valve Clearance And Fast Idle Cam Linkage Adjustments - Jeep J-10 Series 1982 Technical & Service Manual

80130
Fig. 14-132 Float Level Adjustment—Dry
(1) Position vehicle on flat, level surface and warm
engine to normal operating temperature. Turn engine
off. Remove carburetor air cleaner assembly and anchor
screw.
(2) Remove air horn attaching screws and carbu
retor identification tag. Temporarily place air horn and
gasket in position on carburetor main body and start
engine. Let engine idle one minute, then turn engine off
and move air horn aside. Remove air horn gasket to
provide access to float assembly.
(3) Use T-scale to measure vertical distance from
top machined surface of carburetor main body to level of
fuel in fuel bowl (fig. 1J-133). Measure at least 1/4 inch
away from vertical surface to assure accurate indication
because top surface of fuel is concave (higher at edges
than in center). Measure fuel level at exact point of
contact between scale and fuel. Refer to Specifications
for correct fuel level (wet) dimension.
(4) To adjust fuel level, bend float tab (contacting
fuel inlet valve) upward in relation to original position
to raise fuel level, and downward to lower it. Each time
adjustment is made to float tab to alter fuel level, place
gasket and air horn on carburetor, start engine and
permit to idle one minute to stabilize fuel level. Turn
engine off and measure fuel level after each adjustment
until specified level is obtained.
(5) Install replacement air horn gasket, air horn
assembly, carburetor identification tag and attaching
screws. Ensure plastic dust seal on choke operating rod
is positioned correctly and does not cause rod to bind.
Tighten screws. Install air cleaner anchor screw and
tighten.
(6) Adjust idle speed. Refer to Idle Speed
Adjustment.
(7) Install air cleaner.
FUEL SYSTEMS 1J-69
Fig. 14-133 Float Level Adjustment—Wet
Initial Choke Valve Clearance and Fasl Idle Cam
Linkage Adjustments
(1) Loosen choke cover retaining screws.
(2) Open throttle and rotate choke cover until choke
valve is held closed. Tighten one retaining screw.
(3) Close throttle with fast idle speed adjustment
screw on top step of cam.
(4) Apply vacuum to hold choke diaphragm against
setscrew. Do not press on links.
NOTE: If vacuum is applied to the choke diaphragm
with a hand pump, an air leak may be noticed. This is
normal.
(5) Measure clearance between lower edge of choke
valve and air horn (fig. 1J-134).
(6) Adjust clearance by turning screw located at
rear of diaphragm housing.
(7) Push down on fast idle cam lever until fast idle
speed adjustment screw is in contact with second step
(index) and against shoulder of high step.
(8) Measure clearance between upper edge of choke
valve and air horn wall. Refer to Specifications for cor
rect dimension.
(9) Adjust by turning fast idle cam lever screw (fig.
U-135).
(10) Loosen choke cover retaining screw and adjust
choke by turning cover until index is aligned with cor
rect notch on housing. Refer to Specifications.
(11) Position choke cover shield and install retaining
screws.
Choke Unloader Adjustment
(1) Hold throttle fully open and apply pressure on
choke valve toward closed position.