Chevrolet Light Duty Truck 1973, Service Manual

Page: 451 / 979

E N G I N E FUEL 6 M - 2 7
TWO BARREL AND FOUR BARREL CAR­
BURETORS
a. Disconnect electrical connection at the end of
the idle stop solenoid.
b. Adjust carburetors low idle (Adjustment screw
on low step of cam) to Specifications in Column
No. 2, Note (3).
ACCELERATOR AND
THROTTLE LINKAGE (Fig. K5 thru K18)
The throttle control system is of the cable type. There are
no throttle linkage adjustments, a reference between the
bottom of the accelerator pedal roller and floor pan
should be used only as a check for bent bracket
assemblies. Check torque references in Figures K5 thru
K18. Check for correct opening and closing positions by
operating accelerator pedal in car. Cable routing
attachment, carburetor positioning for proper assembly
should be noted by some of the following illustrations.
NOTE: If any binding is present, check for
correct routing of cable or pedal interference
with carpets.
THROTTLE ROD KICKDOWN LINKAGE
ADJUSTMENT
1. Disconnect throttle rod swivel at throttle lever on
carburetor or at dash lever.
NOTE: Cable controls do not require
adjustment.
2. On automatic transmission equipped vehicles
disconnect TV rod at throttle lever.
3. Hold carburetor throttle in wide open position, push
throttle rod rearward (to position accelerator pedal
at the floor mat) and adjust swivel to just enter hole
in throttle lever.
4. Connect swivel to throttle lever and install
accelerator return spring.
5. On vehicles equipped with automatic transmission
hold throttle lever in full open position, pull TV rod
to full detent position and adjust TV rod to just
enter hole on throttle lever, and connect TV rod at
throttle lever.
c. Set dwell and timing and recheck low idle speed.
d. Reconnect electrical connector to the solenoid.
Open the throttle momentarily and adjust the
solenoid plunger screw to the specified curb idle
speed (RPM). See Specifications, Section
6
M,
under "Other Adjustments".
CHOKE CONTROLS
Fig. K 5 -A c c e le r a to r C o n tro ls , C S a n d KS 1 0 th r u 3 0
S e rie s
LIGHT DUTY TRUCK SERVICE MANUAL