GMC 1976 ZEO 6083 Maintenance Manual page 363

HOLD RETAINER
FIRMLY IN PLAC
CHOKE COIL
LEVER
120'
GAUGE FROM TOP OF
CASTING TO TOP OF
FLOAT AT TOE .
GASKET REMOVED
(SEE SPECIFICATION ABOVE)
`G' PUSH UPON THERMOSTATIC
COIL TANG (COUNTERCLOCKWISE
UNTIL CHOKE VALVE IS CLOSED
OF LEV" SHOULD
T COINIACT SIDE OF
PLUG GAUGE
FAST IDLE CAM
.230''
1 . FAST IDLE CAM FOLLOWER OFF STEPS OF
CAM .
2 . SLOW IDLE SCREW ADJUSTED TO OBTAIN
.030" CLEARANCE AT PRIMARY THROTTLE
BORE.
3 . PUMP ROD IN INNER HOLE .
G . GAUGE FROM TOP OF CHOKE VALVE WALL,
NEXT TO VENT STACK, TO TOP OF PUMP
STEM.
5 . TO ADJUST, BEND PUMP LEVER AS SHOWN
USING TOOL J-5197 .
PUMP ADJUSTMENT
O
GAUGE BETWEEN LOWER
EDGE OF CHOKE VALVE B
INSIDE AIR HORN WALL
FAST IDLE CAM
ADJUSTMENT
Figure 27-Carburetor Adjustments
ENGINE FUEL SYSTEM
6M- 21
IDENTIFICATION OF STEPS
ON FAST IDLE CAM
H I GH-~ J
~
SECOND J
CLEARANCE
SLOW IDLE
BEND PUMP
LEVER TO
ADJUST
LOW
BEND TANG
TO ADJUST
A-1713