M4Mc Adjustment Procedures - Pontiac TRANS AM 1977 Service Manual

FUEL SYSTEM 6C-55
1
3 GAUGE FROM TOP O F CASTING T O TOP O F F L O A T
-
GAUGING
O P O l N T 3/16'' BACK FROM END O F FLOAT A T TOE (SEE INSET)
FROM TOE)
UP OR DOWN T O
ADJUST FLOAT ALIGNMENT
FLOAT ADJUSTMENT
STACK. T O T O
ROD I N SPECIFIED HOLE
OF PUMP LEVER
I F NECESSARY, BEND SECONDARY
CLOSING TANG AWAY T O CLOSE
PUMP ADJUSTMENT
PRIMARY VALVES. THEN RE ADJUST
LOOSEN THREE RETAINING SCREWS AND
REMOVE THE THERMOSTATIC COVER AND
COIL ASSEMBLY FROM CHOKE HOUSING
CHOKE V A L V E
BEND CHOKE ROD
A T THIS POINT
TO ADJUST
ON THERMOSTATIC
NG (COUNTERCLOCKWISE)
HOKE V A L V E IS CLOSED
LOWER EDGE O F LEVER SHOULD
JUST CONTACT SIDE OF PLUG
INSERT SPEC1 FlED GAUGE
PLUG GAUGE
CHOKE COIL LEVER ADJUSTMENT
CARB. NO.
- -
CARB. NO.
17057250
253
255
256
258
262
263
266
274
550
553
CARB. NO.
17057250
253
255
256
258
262
263
266
274
550
553
-
SAUGf
-
13/32"
13/32"
13/32"
13/32"
13/32"
17/32"
17/32"
17/32"
17/32"
13/32"
13/32"
-
iAUGE
-
9/32"
9/32"
9/32"
9/32"
9/32"
318"
318"
318"
318"
9/32"
9/32"
-
'LUG
iAUGE
.12OW
ALL
-
-
HOLE
LOC.
-
INNEF
INNEF
NNEE
NNER
NNEA
)UTE I
)UTE f
)UTE F
IUTEF
NNER
NNER
-
M4MC-M4ME CARBURETOR OVERHAUL ADJUSTMENTS
Fig. 6C-102 M4MC Adjustment Procedures