Pontiac TRANS AM 1977 Service Manual page 792

6C-42 1977 PONTIAC SERVICE MANUAL
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HOLD CAM
FOLLOWER ON
SECOND HIGHEST
STEP OF FAST IDLE
CAM AGAINST HIGH
\
\ k
u
STEP
I
/3
--CONNECT VACUUM
TURN SCREW TO
ADJUST SPEED TO
SPEC1 FlCATlON
AND PLUG
I
FAST IDLE ADJUSTMENT
J
FIGURE 1
1. USE CHOKE VALVE MEASURING GAUGE J-26701
.
TOOL M A Y BE
USED W l T H CARBURETOR O N OR OFF ENGINE. IF OFF ENGINE. PLACE
CARBURETOR O N HOLDING FIXTURE SO T H A T IT WILL R E M A I N I N
S A M E POSITION WHEN GAUGE I S I N PLACE.
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2. ROTATE DEGREE SCALE UNTIL ZERO (0) IS OPPOSITE POINTER.
3. W l T H CHOKE VALVE COMPLETELY CLOSED. PLACE M A G N E T SQUARELY
O N TOP OF CHOKE VALVE.
4. ROTATE BUBBLE UNTIL I T I S CENTERED.
FIGURE 2
5. ROTATE SCALE SO T H A T DEGREE SPECIFIED FOR ADJUSTMENT I S
OPPOSITE POINTER.
6. SEAT CHOKE V A C U U M D I A P H R A G M USING V A C U U M SOURCE.
7. WlTH CHOKE COlL REMOVED, ROTATE INSIDE COlL LEVER COUNTERCLOCK-
WISE. MAKE SURE PLUNGER BUCKING SPRING IS COMPRESSED AND SEATED.
8. TO ADJUST, BEND LINK UNTIL BUBBLE I S CENTERED.
9. REMOVE GAUGE.
USING V A C U U M SOURCE.
CHOKE COlL REMOVED,
TE INSIDE COlL LEVER
TERCLOCKWISE. MAKE
PLUNGER BUCKING SPRING
MPRESSED AND SEATED.
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M 2 M C DUALJET 200
REAR V A C U U M BREAKADJUSTMENT-ANGLEGAUGE METHOD
Fig. 6C-76 M2MC 200 Adjustment Procedures
CARB. NO.
- -
CARB. NO.
LT 22,500 M l L E
UNE-UP ADJUSl
0:
70571 72
7057173
-
RPM
1750
1750
-
LUG
;AUGE
-
.225"
.225"
.240"
,240"