Automatic Choke Adjustment; Fast Idle Cam Linkage Adjustment; Unloader—Fast Idle Cam Clearance - Jeep J-10 Series 1982 Technical & Service Manual

14-70 FUEL SYSTEMS
AIR HORN
CHOKE VALVE CLEARANCE
ALTITUDE
COMPENSATION
ANEROID
ADJUSTING
SCREW
MAIN BODY
ALTITUDE
COMPENSATION
CIRCUIT CHOKE
CHOKE
COVER
CHOKE
DIAPHRAGM
VACUUM
SOURCE
81153
Fig. 14-134 Initial Choke Valve Clearance Adjustment
FAST IDLE CAM
LEVER SCREW
AJ41659
Fig. 14-135 Fast Idle Cam Linkage Adjustment
(2) Measure clearance between lower edge of choke
valve and air horn wall. Refer to Specifications for cor
rect dimension.
CAUTION: Do not bend the unloader tang downward
from a horizontal plane.
(3) Adjust by bending unloader tang that contacts
fast idle cam (fig. 1J-136). Bend toward cam to increase
clearance and away from cam to decrease clearance.
(4) After completing adjustment, open throttle un
til unloader tang is directly below fast idle cam pivot.
There must be exactly 0.070-inch (1.8 mm) clearance
between unloader tang and edge of fast idle cam (fig. 1J-
137).
(5) Operate throttle and inspect unloader tang to
ensure it does not bind, contact or stick on any part of
AJ41660
Fig. 14-136 Choke Unloader Adjustment
1 FAST IDLE .
• CAM PIVOT •
CHOKE
UNLOADER
TANG
FAST
IDLE
CAM
AJ41661
Fig. 14-137 Unloader—Fast Idle Cam Clearance
carburetor casting or linkage. After carburetor installa
tion, inspect for full throttle opening when throttle is
operated from inside vehicle. If full throttle opening is
not obtainable, it may be necessary to remove excess
padding under floormat or reposition throttle cable
bracket located on engine.
Automatic Choke Adjustment
Loosen choke housing cover retaining screws and ro
tate cover in the desired direction as indicated by the
arrow on the face of the cover. Refer to Specifications
for the correct position (notch). The specified position
will be satisfactory for most driving conditions.
NOTE: The richer the choke setting the longer the coil
tension exerts force against the linkage and holds the
choke in a closed position. As heated incoming air and
the electric heater warm the coil, the tension is reduced
and fast idle cam weight gradually moves the choke
linkage in the opposite direction.