SERVICE MANUAL SUPPLEMENT REVISED CARBURETOR NUMBERS

VEHICLES AFFECTED: All 1986 Vehicles With 2SE, M2ME and M4ME-M4MC Carburetors

Carburetor numbers have been updated for the 1986 Canadian service Manual Supplement. These changes should be noted as follows:

Carburetor Revise pages ---------- ------------ 2SE 6C3-27 M2ME 6C4-24 M4ME-M4MC 6C5-32

ADJUSTMENT SPECIFICATIONS (M2ME)

PUMP ROD FLOAT ADJ. CARSURETOR ENGINE ENGINE SETTING (mm, in., NUMBER SIZE RPO CARLINE TRANS. (mm, in.) location) ---------- ------ ------ ------- ------ --------- --------- 6.4, 1/4 17086172 3.8L LDS B/G A3 7.1,9/32 INNER

CHOKE COIL CHOKE ROD VAC BREAK VAC. BREAK LEVER CAM FRONT REAR UNLOADER (mm, in.) (degrees) (degrees) (degrees) (degrees) ---------- ---------- --------- ---------- --------- 3, .120 24.5 17 19 38

ADJUSTMENT SPECIFICATIONS (2SE)

FLOAT AIR VALVE CARBURETOR ENGINE ENGINE SETTING WINDUP NUMBER SIZE RPO CARLINE TRANS. A/C (mm, in.) (turns) ---------- ------ ------ ------- ------ --- --------- ------- 17086312 2.0L LR9 J M4/M5 NO 7.0, 5/16 1/2

CHOKE COIL CHOKE VAC. BREAK AIR VALVE VAC. BREAK LEVER ROD CAM PRIMARY ROD ADJ. SECONDARY UNLOADER (mm, in.) (degrees) (degrees) (degrees) (degrees) (degrees) -------- -------- --------- --------- --------- --------- 2.2,.085 24 18 1 20 35

FLOAT AIR VALVE CARBURETOR ENGINE ENGINE SETTING WINDUP NUMBER SIZE RPO CARLINE TRANS. A/C (mm, in.) (turns) ---------- ------ ------ ------- ------ --- --------- ------- 17086314 2.0L LR9 J A3 BOTH 7.9,5/16 1/2

CHOKE COIL CHOKE VAC. BREAK AIR VALVE VAC. BREAK LEVER ROD CAM PRIMARY ROD ADJ. SECONDARY UNLOADER (mm, in.) (degrees) (degrees) (degrees) (degrees) (degrees) -------- -------- --------- --------- --------- --------- 2.2,.085 29 16 1 20 30

FLOAT AIR VALVE CARBURETOR ENGINE ENGINE SETTING WINDUP NUMBER SIZE RPO CARLINE TRANS. A/C (mm, in.) (turns) ---------- ------ ------ ------- ------ --- --------- ------- 17086484 2.8L LE2 A/X A3 YES 9.5,12/32 1 1/4

CHOKE COIL CHOKE VAC. BREAK AIR VALVE VAC. BREAK LEVER ROD CAM PRIMARY ROD ADJ. SECONDARY UNLOADER (mm, in.) (degrees) (degrees) (degrees) (degrees) (degrees) -------- -------- --------- --------- --------- --------- 2.2,.085 24 28 1 32 45

FLOAT AIR VALVE CARBURETOR ENGINE ENGINE SETTING WINDUP NUMBER SIZE RPO CARLINE TRANS. A/C (mm, in.) (turns) ---------- ------ ------ ------- ------ --- --------- ------- 17086485 2.8L LE2 A/X A3 NO 9.5,12/32 1 1/4

CHOKE COIL CHOKE VAC. BREAK AIR VALVE VAC. BREAK LEVER ROD CAM PRIMARY ROD ADJ. SECONDARY UNLOADER (mm, in.) (degrees) (degrees) (degrees) (degrees) (degrees) -------- -------- --------- --------- --------- --------- 2.2,.085 24 28 1 32 45

FLOAT AIR VALVE CARBURETOR ENGINE ENGINE SETTING WINDUP NUMBER SIZE RPO CARLINE TRANS. A/C (mm, in.) (turns) ---------- ------ ------ ------- ------ --- --------- ------- 17086482 2.8L LE2 X M4 YES 9.5,12/32 1 1/4

CHOKE COIL CHOKE VAC. BREAK AIR VALVE VAC. BREAK LEVER ROD CAM PRIMARY ROD ADJ. SECONDARY UNLOADER (mm, in.) (degrees) (degrees) (degrees) (degrees) (degrees) -------- -------- --------- --------- --------- --------- 2.2,.085 24 28 1 32 45

FLOAT AIR VALVE CARBURETOR ENGINE ENGINE SETTING WINDUP NUMBER SIZE RPO CARLINE TRANS. A/C (mm, in.) (turns) ---------- ------ ------ ------- ------ --- --------- ------- 17086483 2.8L LE2 X M4 NO 9.5,12/32 1 1/4

CHOKE COIL CHOKE VAC. BREAK AIR VALVE VAC. BREAK LEVER ROD CAM PRIMARY ROD ADJ. SECONDARY UNLOADER (mm, in.) (degrees) (degrees) (degrees) (degrees) (degrees) -------- -------- --------- --------- --------- --------- 2.2,.085 24 28 1 32 45

FLOAT AIR VALVE CARBURETOR ENGINE ENGINE SETTING WINDUP NUMBER SIZE RPO CARLINE TRANS. A/C (mm, in.) (turns) ---------- ------ ------ ------- ------ --- --------- ------- 17086484 2.8L LE2 A A4 YES 9.5,12/32 1 1/4

CHOKE COIL CHOKE VAC. BREAK AIR VALVE VAC. BREAK LEVER ROD CAM PRIMARY ROD ADJ. SECONDARY UNLOADER (mm, in.) (degrees) (degrees) (degrees) (degrees) (degrees) -------- -------- --------- --------- --------- --------- 2.2,.085 24 28 1 32 45

FLOAT AIR VALVE CARBURETOR ENGINE ENGINE SETTING WINDUP NUMBER SIZE RPO CARLINE TRANS. A/C (mm, in.) (turns) ---------- ------ ------ ------- ------ --- --------- ------- 17086485 2.8L LE2 A A4 NO 9.5,12/32 1 1/4

CHOKE COIL CHOKE VAC. BREAK AIR VALVE VAC. BREAK LEVER ROD CAM PRIMARY ROD ADJ. SECONDARY UNLOADER (mm, in.) (degrees) (degrees) (degrees) (degrees) (degrees) -------- -------- --------- --------- --------- --------- 2.2,.085 24 28 1 32 45

FLOAT AIR VALVE CARBURETOR ENGINE ENGINE SETTING WINDUP NUMBER SIZE RPO CARLINE TRANS. A/C (mm, in.) (turns) ---------- ------ ------ ------- ------ --- --------- ------- 17086486 2.8L LE2 A A3 YES 9.5,12/32 1 1/4 (POLICE)

CHOKE COIL CHOKE VAC. BREAK AIR VALVE VAC. BREAK LEVER ROD CAM PRIMARY ROD ADJ. SECONDARY UNLOADER (mm, in.) (degrees) (degrees) (degrees) (degrees) (degrees) -------- -------- --------- --------- --------- --------- 2.2,.085 24 28 1 32 45

FLOAT AIR VALVE CARBURETOR ENGINE ENGINE SETTING WINDUP NUMBER SIZE RPO CARLINE TRANS. A/C (mm, in.) (turns) ---------- ------ ------ ------- ------ --- --------- ------- 17086487 2.8L LE2 A A3 NO 9.5,12/32 1 1/4 (POLICE)

CHOKE COIL CHOKE VAC. BREAK AIR VALVE VAC. BREAK LEVER ROD CAM PRIMARY ROD ADJ. SECONDARY UNLOADER (mm, in.) (degrees) (degrees) (degrees) (degrees) (degrees) -------- -------- --------- --------- --------- --------- 2.2,.085 24 28 1 32 45

General Motors bulletins are intended for use by professional technicians, not a "do-it-yourselfer". They are written to inform those technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions and know-how to do a job properly and safely. If a condition is described, do not assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See a General Motors dealer servicing your brand of General Motors vehicle for information on whether your vehicle may benefit from the information.