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20-12
GROUP
20-MAINTENANCE OPERATIONS
DRILL OR GAUGE OF
SPECIFIED CLEARANCE
FAST IDLE
ADJUSTING SCREW
FIG. 23- Choke Plate Pulldown
Clearance- Motorcraft Model
21 00-D 2-V Carburettor
ifold, and a tang on the top lever will
align with the V mark on the cam
(Fig. 24).
3. Be sure the cam is at the
kickdown position while checking
or adjusting the fast idle cam
clearance.
Check for the specified clearance
between the lower edge of the choke
plate and the air horn wall. To adjust
the clearance, turn the fast idle cam
clearance adjusting screw clockwise
to increase and counterclockwise
to decrease the clearance.
4. Set the choke thermostatic
spring housing to specifications.
Adjust the anti-stall dashpot, idle
speed and fuel mixture.
MOTORCRAFT MODEL 4300-4V
CHOKE PLATE PULL
DOWN
CLEARANCE
1. Remove the air cleaner, then re-
move the choke thermostatic spring
housing from the carburettor. Tore-
move the thermostatic spring housing
from the carburettor installed on the
engine, refer to Thermostatic Spring
Housing and Gasket Replacement.
V1202-A
FOR 351-C ENGINE
Vl261-A
FIG.
24-
Fast Idle Levers Used
on the Motorcraft Model2100-D 2-V
Carburettor
3. Block the throttle about half-
open so the fast idle cam does not
contact the fast idle adjustment
screw, then insert the bent end of the
wire gauge between the \ower edge of
the piston slot and the upper edge of
the right hand slot in the choke
housing
(Fig. 25).
DRILL GAUGE OF SPECIFIED
CLEARANCE SIZE
APPLY LIGHT PRESSURE TO CHOKE LEVER
V1235-A
2. Bend a wire gauge of 0.036-inch
diameter at a 90 degree angle approxi-
mately
%
-inch from one end.
FIG. 25
-Choke Plate Pull-Down and Fast Idle
Cam Adjustment
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