|Tip: Take plenty of digital pictures along the way in case you have a question about something later.
Choke PullOff Solenoid
Remove the retaining clip, two screws and remove the solenoid
Remove fuel inlet filter plug and filter assembly (fig. 2)
Remove retainer clips and choke operating rod, then remove five air
Remove float hinge pin, float and fuel inlet needle. Remove fuel inlet
Remove evaporation control system diaphragm (fig. 5)
Don’t take the choke plates & shaft apart unless there is a good reason. You might break a screw causing more problems than it is worth.
Remove choke water housing screw, housing & gasket (fig. 6)
Remove 3 choke bimetal screws, ring thermostat housing & gasket.
Remove 3 screws from choke housing & remove housing &
Remove ‘O’ ring from vacuum passage (fig. 8)
Remove choke housing shaft nut, lever, spring retainer & cam
Remove screw & remove bushing spring washer, fast idle lever
Remove 3 screws & remove diaphragm cover spring and diaphragm and shaft from housing.
Remove diaphragm adjusting screw from cover.
Accelerator Pump (fig. 9)
Remove 3 screws and remove pump cover, diaphragm and return spring from housing.
Body (fig. 10)
Remove primary high speed bleed and main well tube.
Remove secondary high speed bleed and main well tube.
Write down sizes of air bleed restrictions and main well tubes so that primary and secondary can be reinstalled in the proper channels.
Remove primary and secondary main metering jet, noting their size so they may be installed properly.
Remove power valve assembly.
Remove pump discharge nozzle and two pump discharge weight balls.
Hot Idle Compensator (fig. 11)
Remove cover plate and remove hot idle compensator and gasket.
Throttle Lever and Idle Stop Solenoid (fig. 12)
Remove 2 screws and remove idle stop solenoid and braket.
Straighten lock washer and remove nut, lock washer, primary throttle lever, washer, secondary operating lever, spring and idle stop lever.
Cleaning and Inspection
Thoroughly clean all carburetor castings and metal parts. We
Blow out all passage ways with compressed air.
I generally don’t like running wire in the passage ways because it can
Inspect all parts for wear. Always replace your float if you have the
Inspect the throttle shaft for excessive wear. Over time the shaft can wear to the point that you develop a vacuum leak and you will have a rough idle.
Always rebuild your carburetor using a new carburetor kit. Ethanol has probably caused some damage to any rubber part that it has had contact with. Stay away for old carburetor kits when possible. The gaskets and
Replace the fuel filter at this time.
Refer to disassembly illustrations and reverse disassembly procedure.
Once the float has been assembled to the air horn, adjust it.
With the air horn in inverted position and float tang resting lightly on fuel inlet needle, insert specified gauge between air horn and top of float. These days this means measure the distance. Bend the tang if adjustment is required (fig. 14)
After assembly, adjust secondary throttle stop screw (fig. 15). Back