INSTRUCTIONS FOR MODEL "B" CARBURETOR 1.
Remove 4 cover attaching screws and choke bracket.
Lift Cover straight up to prevent damage to floats. Hold Throttle Kick Lever
while lifting cover.
cover up-ended on flat surface and remove float hinge pin and floats.
Lift air horn gasket from cover and remove Float Needle, Seat and red fibre
gasket, using screw driver of
Remove Main Metering Jet and Power Valve Assembly from Main Well Support.
Use care so as not to lose small
spring and ball of Power Valve Assembly
Remove Main Well Support by loosening attaching screw.
Remove Main Well Support Gasket and lift Power Stem and Spring from Cover.
6. Remove Choke Valve Screws
and Choke Valve.
Unhook Choke Spring and remove choke shaft assembly.
With small pointed instrument remove choke retaining ring. Choke swivel
assembly and spring may now be removed.
is now ready to be cleaned in carburetor solvent and dried with compressed
air. It is not necessary to
remove passage plugs. Blow out all passages with compressed air prior to
All Main Metering Jets for Rochester GM Carburetors are calibrated by fuel-flow,
drill size, at the Factory. Clean with solvent and compressed air only.
Remove Throttle Kick Lever and Spring by loosening screw and washer.
Holding Pump Plunger full down, remove Pin Springs and Pump Link from Throttle
Lever and Pump Rod. Pump Plunger may now be lifted from Bowl.
Lift Pump Spring from Pump Well and remove ball check in bottom of well.
Tap lightly, with small screwdriver, outer edge of Pump Discharge Guide
to compress lips, rotate slightly to
remove. Bronze Spring and Large ball check will fall from Bowl when up-ended.
Remove Pump Screen and Retainer from Bowl.
With Bowl up-ended, remove Throttle Body attaching screws.
may now be cleaned in same manner as air cover. By holding a flashlight
to passage holes, it can readily
be determined if they are clean.