The updated specifications provided in this bulletin should be used in place of the Chassis Service Manual specifications.
These adjustment specifications will be included with the next Chassis Service Manual Revision.
FLOAT LEAN IDLE AIR CHOKE IDLE VAC. CARB. LEVEL MIXTURE MIXTURE VALVE COIL CAM BREAK NUMBER +/-1/16" SCREW SCREW SPRING LEVER (CHOKE PRI. ------- -------- (TURNS) (TURNS) (TURNS) ----- ROD) +/-2.5 DEG Inch mm ------- ------- ------- +/-3.5 DEG---------- ---- -- ---------- 17084534 5/32 3.6 2-1/2 4 1/2 .085 280 25 DEG 17084535 5/32 3.6 2-1/2 4 1/2 .085 280 25 DEG 17084540 5/32 3.6 2-1/2 4 1/2 .085 280 25 DEG 17084542 4/32 3.0 2-1/2 4 1/2 .085 280 25 DEG 17085356 *4/32 *3.3 2-1/2 4 1 .085 220 25 DEG 17085357 9/32 7.0 2-1/2 4 1 .085 220 25 DEG 17085358 *4/32 *3.3 2-1/2 4 1 .085 220 25 DEG 17085359 9/32 7.0 2-1/2 4 1 .085 220 25 DEG 17085368 4/32 3.3 2-1/2 4 1 .085 220 25 DEG 17085369 9/32 7.0 2-1/2 4 1 .085 220 25 DEG 17085370 4/32 3.3 2-1/2 4 1 .085 220 25 DEG 17085371 9/32 7.0 2-1/2 4 1 .085 220 25 DEG 17085452 5/32 3.6 2-1/2 4 1/2 .085 280 25 DEG 17085453 5/32 3.6 2-1/2 4 1/2 .085 280 25 DEG 17085458 5/32 3.6 2-1/2 4 1/2 .085 280 25 DEG
AIR VAC. UN- CARB. VALVE BREAK LOADER NUMBER ROD SEC. +/- 6 DEG ------ --- +/- 3.5 DEG ---------- -----------
17084534 1 DEG 35 DEG 45 DEG 17084535 1 DEG 35 DEG 45 DEG 17084540 1 DEG 35 DEG 45 DEG 17084542 1 DEG 35 DEG 45 DEG 17085356 1 DEG 35 DEG 45 DEG 17085357 1 DEG 35 DEG 45 DEG 17085358 1 DEG 35 DEG 45 DEG 17085359 1 DEG 35 DEG 45 DEG 17085368 1 DEG 35 DEG 45 DEG 17085369 1 DEG 35 DEG 45 DEG 17085370 1 DEG 35 DEG 45 DEG 17085371 1 DEG 35 DEG 45 DEG 17085452 1 DEG 35 DEG 45 DEG 17085453 1 DEG 35 DEG 45 DEG 17085458 1 DEG 35 DEG 45 DEG
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.