GAYGS F R O M TOPOF CASTING TO TOP O i r r o A r - C I U C I N G P O M i 3 1 1 8 BACK

CilUDiNG POINT ,1:!6 BACL PROM TOE,

t G * T L " A C A N S I NEEDLE

@ nEMOVEFLO&T AND BENO FLOAT A R M UP OR OOWN 47 NOTCH TO L O I Y S T

O 0 ° C . CII IB"I1ETOIB l i r L O l T L E V E L Y A R l i S O Y E 9 f 1 1 1 6 FROM SPEClFlCATIONB, l D d U I T F L 0 A T AS FOLLOWS

LEVEL TO0 MIOH HOLD IIETAINER FlRULY IN PLbCE I a AN0 @ 1 ANDPUS* DOWN ON CENTE' IO IFLOAiPONTOON10OBTAlnCO~SECTSETi lNG

LEYELTOOLOW L l F T o Y T METERING RODS REMOVE BDLENOlDCONHECIORSCREW. TURN LEAN MIXTURE SOLENOLO SCREW C L o C I W l e L COUNTING NUMBER OF TURNS UNi lL SCREW IS BOTTOMED LIGHTLY I* FLoiiT BOWL R E C O W DUMBER Rol TURNS COUNTED TUANSCmLW COUNTERCLOCKWISE A N D REMOVE SCREW LiFTSOLENOiD AWDCOHWLCTORF~~OM~LO~TBOWL R ~ U O Y E F L O ~ ~ T A N O B E ~ D F L O A T A R M U P T O ADJUST VISUALLY CHECK FLOAT ALIOHMEWT L I T E R ADJUSTING. REVC'-' PROCEDURE TO R E - I N S T I L L PLRTS RLUOYED. MAKING SURE ESOLEHOIC SCREW 4s BACKED OUTOFFLOAT BOWL E X A C i l " THE SAUL NUMBER COUNTED AT D1S455EUSLI

FLOAT ADJUSTMENT (MECHANICIL SETTING)

- -

AIR HORN SCREH I mun I ZNING SEQUENCE (DUAL JET MODEL 200)

FIG. 2

Delco Carburetor BULLETIN: 9D4A RED SECTION

DATE MAY 1983 ADJUSTMENT PROCEDURES 2MC.M2MC.E2MC.M2ME.E2ME PAGE I

(DUAL JET) REPLACES PAGE 1

NOTE: PERFORM ADJUSTMENTS APRIL 1979

IN PROPER SEQUENCE

3

0 0

AIR HORN SCREW TIGHTENING SEQUENCE (DUAL JET MODEL 210)

FIG. 2A -

3 4

AIR HORN SCREW TIGHTENING SEQUENCE- DUALJET MODELS

FIG. 2B

0 C I U G . ?.OM TOSOF C*Ol. VAIVI WILL w x r TO vrnr I T A C " 10 TOP or ? " U P I T E M

L E V I * TO

OFSUMS L E Y I I

@."..o., LEV.. -8." S C I I I D I I V I I W* IL I BlhD1NC L I V E "

O w a o n ~ ~ vrtvrr C O H I L I T E L " CLYICD N O T l MLKl SY" FAST IIDU CAM FOLLOWlR LlYI"1JOFF S T r P I ON F A I T IDLE CAW

AP ADJUSTMENT

FIG. 3

BULLETIN: 9D.8A RED SECTION DATE: MAY 1983 PAGE: 2

HIGHEST STEP OF FAST lDLE CAM

IN TO CONTaCT LEVER THFN SCREW IN SPECIFIED NUMBER OF THROTTLEY*LVEJ*RE

TURNS TO ADJUSTISET NOTE1 CLOSED

FAST IDLE ADJUSTMENT (BENCH) FIG. 4

MOTE IF TIYWR-RES~STA~ CHOKE , m v r n D ] IS USED, IEYOVS CHORE COYER 4 N D C O I L A ~ Y B L I F O L L O W I N ( I IYIIRUCTIOWI bWCHOIES71TCOYER RETAIWERllT

THERMOSTATIC

OLOOS~NIHREE R C ~ N I W O SCREWS AND RSYOYIIHETIILRYOITATICCDYFR A m @PLACE 6AST #OLE CAM COlL A S I L Y I L I FROM C Y O l l HOUOING FOLLOWER ON WlOH STEP (SEE NOTE) OF FAST lDLE CAM

CHOKE COlL LEVER ADJUSTMENT

FIG. 5

@HIKE CHOIE CON LEVER AND FA- ~DLEADJUITYENT (BENCH ORON-TWS CAR OETTIIIG). NOT8 lF IAN-R-RESISTANT CHOKE (RIVETED1 IS USED. D O H O T R ~ I O Y C R I V E I I ANDCHOKECOVERTO PLIFORU 7HlS ADIU8TYEYI. USE RUBBER B1WD OW YACUUYBREAI ILEVEl7Al lGTOHOLDCWOIEVl lVECLDtED.

OW CHO1E COIL LEVER OR YICUUY @.EM LEVER TANG @ReUOYEGIUDs. IHOLO IN POSWION WITH RUBBER BAND).

CHOKE ROD (FAST IDLE CAM) RELATION ADJUSTMENT

FIG. 6

FAST IDLE CAM

C I M FOLLOWER CON0 STEP OF CAW

FAST IDLE CAM (CHOKE ROD) ADJUSTMENT

FIG. 7

* a.Cls"asrs Awo*L"e ELSE0

PUS" INI,DIC*OL.SO,, LEVER C 0 " " ~ ~ ~ ~ L O C X W,SS "WT,L,&WC ow OY.llOE ,EVER CONILCT. V.C""M n n n * R O O .UCKI ITSI .NT i.COU..ESS.D

VACUUM BREAK ADJUSTMENT (RICH SETTING)

FIG. 8

",""EST I n C Y Y U *PEAK ,Do

O S < A S , 8"LECfiM *orCoUsl /rsl B"CIIWT S P R # N S ,

VACUUM BREAK ADJUSTMENT (LEAN SETTING)

FIG. 9

Delco Carburetor BULLETIN: SD-8A

RED SECTION DATE MAY 1983

ADJUSTMENT PROCEDURES 2MC.M2MC-E2MC.M2ME.E2ME PAGE 3 (DUAL JET) REPLACES PAGE 3 APRIL 1979

VOTE PERFORM ADJUSTMENTS IN PROPER SEQUENCE

FIG. 10

U P P l l E D L I esC"DXI

GAUGE VllYl AND lNI iDE WALL or A l s "esN

FRONT VACUUM BREAK ADJUSTMENT PLUG GAUGE METHOD

FIG. 11

USINeVnCUUM SOURCE.

NOTSON DFLllMODELSWiTIl AIR BLEED.REM(IVERUBBlR COYER OVERMLTER ELEMENT AND PLUGSMALLBLEEDHOLE IN VACUUMTUBEWITHTAPE ON MODELS WlTH AIR BLEEDIN

RUBBER BAND

PLUNDER LlOHTLI CLOSE CHOKE BY

BUCIlNO PUSHINO UPWARD ON CHOKE

SPRINO C O I L LEVER OR VACUUM

BREAK LEVER TANG IHOLD IN POSITION WITH RUBBER

@TO ADJUST. BEND BAND). MAKE SURE PLUNGER CHOKE LINKUNTIL BUCKING SPRING (IF USED) BUBBLEISCENTERED P-2 IS COMPRESSED AND SEATED.

REAR V A C U U M BREAK ADJUSTMENT

FIG. 12

REAR VACUUM BREAK ADJUSTMENT PLUG GAUGE METHOD

FIG. 13

SETTING). NOTE: DONOTREMOVERIVETS IWOCHDXECOYERTOPERFORMTHlSADJUSTUENI "SERUBsERB&NDONVAC""MBRE*IILEVERT*NGTOHOLDCHOIEVILVE CLOSED (STEP 8 1

BUBBLE IS CENTERED.

@CLOSE CHOIE VALYE BY PUSHING UP ON T ~ N G ON VACUUM BREAK LEVER (HOLD IN POSlTlON WlTH RUBBER BAND)

UNLOADER ADJUSTMENT lTYPlCAll

FIG. 14 I

"OLD PRlMAR"

I UNLOADER ADJUSTMENT 1 I FIG. 15 I

BULLETIN: 9D.8A RED SECTION DATE: MAY 1983 PAGE: 4 I

O ALIONU*K w eovm m w SPE~SOED row o* *OU8I*0. NOTE: UAKE SURE COIL ncr up rwcn e w s COIL TANG - SEE TTMCAL V W - INSET "9 ..

LOO=" I M L E RETAWING S C W S (NOTE: TtOHTEY

INSET 8 2

JSTMEN' AUTOMATIC CHOKE COIL ADJl T FIG. 16

OPREPAREVEUIC~ FOR l t o u s T m N T s - SEE EMlSStON LABLL ON VEHICLE NOTE lUNlTlON TIMING SET PER LI IBEL -

TURN l O L i S P ~ ~ D S C R E W 10 BET CURBIDLE W E L O T O S P E C I F I C A T I O N S A ' C 0 1 6 i S C E LMISION LABEL)

I IDLE SPEED ADJUSTMENT FIG. 17 1

.E SPEED

O s o L e N o I D w E R G I z m A ' C COMPRESSOR LEAD DISCONNECTED AT A - C

@ PREPARCVEHICLE FOR IIDJUSTMeNTs

A TIRANSMIBSION IN DRIVE M T INNEUTRAL

CONNCCTION

@oPENTHRoTi lEsLIG*rLyToALLoW S O L E N ~ ~ D P L U N G E R T O ~ U I L V ~ X T ~ N D

iSEECMISSION L ~ B C L I

AIC ID1 -UP SOLENOID ADJUSTMENT

FIG. 18

O P O S ~ T ~ O N T R A N S M ~ S ~ ~ O N I N PARKOR NEUTRaL

VALVE TURN FAST IDLE SCREW TOOSTAIN SPECIFIED RPM ON EMISSION LABEL

DJUSTMENT [ON VEHICLE] FIG. 19

Delco EZl BULLETIN: 9D-8S

DATE: NOVEMBER 1977

Delco Carburetor PAGE: 1 FILE AFTER BULLETIN 9D-8A REPLACES PAGE 1 DATED NOVEMBER 1976

. .- ADJUSTMENT A N D TUNE UP SPECIFICATIONS

ADJUSTMENT SPECIFICATIONS

~ ~

REFER TO LABEL IN ENGINE COMPARTMENT FOR CORRECT

CO. WD, 131, 132:M. 9X. 9FR, 9FD PRINTED IN U.S.A. 01977 GENERAL MOTORS CORP.

BULLETIN: 9D-8S DATE: NOVEMBER 1977 PAGE: 2

A D J U S T M E N T AND TUNE U P S P E C I F I C A T I O N S

I A D J U S T M E N T S P E C I F I C A T I O N S

- .

M O D E L "2MC" (DUAL-JET)-

R E F E R T O L A B E L IN E N G I N E C O i v ~ r ~ n I IV I~NT F O R C O R R E C T

*Alternate Method TUNE-UP P R O C E D U R E A N 0 SPEClF lCATlOMS

Note: 150561 57-452-1 7055053 ,175: Others ,210". IMPORTANT: All Choke Measurements Are Made a t TOP Edge Of Valve.

CARBURETOR MODEL CARBURETOR NO.

2MC

7045358

2MC

170561 57 17056454

ZMC

17056452 17056456 17056458

ZMC

17056455

ZMC

17056457

BULLETIN: 9D.BS DATE: NOVEMBER 1977

Delco Carburetor PAGE: 3 FILE AFTER BULLETIN 9D-8A REPLACES PAGE 3 DATED NOVEMBER 1976

ADJUSTMENT AND TUNE UP SPECIFICATIONS

7 I ADJUSTMENT SPECIFICATIONS

. . - . - - . -

MODEL "2MC" - "MZMC" - "M2ME" (DUAL-JET)

.JJUSTMENT BULLETIN NO. 1 9 D 8 A ! 9D-8A ! 9 D B A 9 D a A I 9D-8A - ~-~ I I

M2MC

17057173

M2MC

17057172 17057176

ADJUSTMENT FLOAT LEVEL PUMP ROD LOCATlOP PUMP ROO

X U U M BREAK-LEAN 1.210 1 9 1.160 .CUUM BREAK-FRONT(ANGLEGAUGE~ I

~ -~~ I I

2MC

170571 57

2MC

17056459

FAST IDLE (BENCH) CHOKE COIL LEVER CHOKE ROD (FAST IDLE CAM)

gACUUM BREAK-FRONT(PLUG GAULit'l 1 . I J 3 I I 103 I I -- VACUUM BREAK-REAR(ANGLE GAUGE) Note 12 Note 12 VACUUM BREAK-REAR (PLUG GAUGE*) Note 13 Note 13

UNLOAOER 5 190 15 190 15 240 15 240 15 - -

CHOKE SETTING Index 16 2NR 16 1NR 16 2NR 16 2NR 16 -

2MC

170571 50 17057151 17057156 17057158

I

Spec.

118

OUTER

3116

3 Turns

,120

. lo5

1 REFER TO LABEL IN ENGINE COMPARTMENT FOR CORRECT TUNE-UP PROCEDURE AND SPECIFICATIONS

'Alternate Method Note: Angle Gauge Setting 36'. Plug Gauge ,225.'; After 22;500 Miles, Reset to 38'. or ,240" IMPORTANT: All Choke Measurements Are Made A t Top Edge Of Vs ve.

Fig. No.

pp

1

3

3

IDLE SPEED ADJUSTMENT

IC IDLE SPEED ADJUSTMENT

AST IDLE R.P.M.

CO, WD, 131,132:M,9X,9FR.9FD

I I

4

5

7

PRINTED I N U.S.A. 0 1 9 7 7 GENERAL MOTORS CORP.

Spec. 118

OUTER

11/32

SEE DECAL SEE DECAL

900.P Low Step

3 Turns

,120

,085

Fig. No. 1

3

3

17

l8

SEE

DECAL

4

5

7

spec.

118

OUTER 318

SEE DECAL

ZCAL 900-P LOW Step

3 Turns

,120

,090

Fig. No. 1

3

3

l7

1 8

SEE

DECAL

4

5

7

Spec. 11/32

INNER

114

SEE DECAL

goo-N LOW Step

3 Turns

,120

,075

Fig. No. 1

3

3

l7

SEE

DECAL

4

5

7

Spec. 11/32

OUTER 5116

SEE DECAL

1750-P 2nd Step

Fig. No. 1

. 3

3 Turns

,120

,075

5

7

l7

SEE

DECAL

SEE DECAL

1 7 5 0 . ~ 2nd step

l7

SEE

DECAL

BULLETIN: 9D-8S

DATE: NOVEMBER 1977 PAGE: 4

T O R M O O E L 1 M2ME I MZMC I M2MC I MZMC I MZMC I

ADJUSTMENT SPECIFICATIONS

ADJUSTMENT AND TUNE UP SPECIFICATIONS MODELS "2MC" - "MZMC" - "MZME" (DUALJET)

C A R B U R E

REFER Tu Lnaer IN ENGINE COMPARTMENT FOR CORRECT

Note: 1705845045°: Otherr 40'.

CARBURETOR NO. 17058130 17058131 17058132 17058733 170581 84 170581 86

170581 50 170581 52

170581 51 17058156 110581 58

- -

17058154 17058155 17058450

- - -

170581 60

BULLETIN: 9D .S RED SECTION

DATE: MAY 1983

Delco Carburetor PAGE: 5 REPLACES PAGE 5 DATED APRIL 1979

ADJUSTMENT AND TUNE UP SPECIFICATIONS MODELS "2MC"-"M2MC"-"M2ME"-"E2ME" (DUALJET)

M2ME M2ME M2MC MZMC MZME 17058192 17058498 17059100 17059108 17059130 (Turbo) (Closed Lnnp) 17059101 17059110 17059131

17059102 17059138 17059132 17059103 17059139 17059133 17059142 17059140 17050170 17059143 17059141 17059171 17059144 17059145

ADJUSTMENT SPECIFICATIONS

I L E CAM)

.E AN IRONT (ANGLE GAUGE)

BULLETIN: 9D-8S RED SECTION DATE: MAY 1983 PAGE: 6

NOTE 3 -

I - Note 1: 17059434-436 29"; Others 27 Note 2: 1600-P; California Models 1950-r. Note 3: 17059151 3S0; Others 27'. Note 4: 17059151 25O; 17059154 40°; 17059450 45O. Note 5: 17059191 11132; Others 5116. Note 6: 17059430-432 9/32: Others 15/32.

Delco Ca

BULLETIN: 9D.S RED SECTION

DATE: MAY 1983 PAGE: 7

REPLACES PAGE 7 DATED APRIL 1979

ADJUSTMENT AND TUNE UP SPECIFICATIONS MODELS 'L2MC"-L'M2MC"-''M2ME"-''E2ME'' (DUALJET)

1 ADJUSTMENT SPECIFICATIONS 1

I I I I I I I I I VACUUM BREAK-REAR (ANGLE GAUGE) 17" 1 12 1 21' 1 12 1 30" 12 1

CARBURETOR MODEL CARBURETOR NO.

Note 1: 17059492-498-2NR; Others INR.

M2ME

17059196 17059491 17059492 17059498

M2ME

17059184 17059193 17059194

,,

EZME 17059496

(Closed LOOP)

NOTE!