DISASSEMBLY

Tips to get started:

To facilitate working on the carburetor, and to prevent damage to the throttle plates, install carburetor legs on a base if you have them. If legs are unavailable, install 4 bolts about 2 1/4” long) and 8 nuts on the carburetor base.

Use a separate container for the component parts of the various assemblies to facilitate cleaning, inspection, and assembly.

Take many pictures along the way in case you have questions while reassembling.

Following is a step-by-step sequence of operations for completely overhauling the carburetor. However, certain components of the carburetor may be serviced without a complete disassembly of the entire unit.

AIR HORN

  1. Remove the air cleaner anchor screw.
  2. Remove the automatic choke control rod retainer.
  3. Remvoe the air horn attaching screws, lock washers, and the carburetor identification tag. Remove the air horn and air horn gasket.
  4. Remove the choke control rod by loosening the screw that secures the choke shaft lever to the choke shaft. Remove the rod from the air horn. Slide the plastic dust seal out of the air horn.
  5. Remove the choke diaphragm assembly.
  6. If it is necessary to remove the choke plate, remove the staking markes on the choke plate attaching screws and remove the screws. Remove the choke plate by sliding it out of the shaft from the top of the air horn. Remove any burrs around screw holes prior to removing the choke shaft. Slide the choke shaft out of the air horn.

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If your choke plates, shaft, and screws are all in good condtion, we recommend NOT removing these components.

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AUTOMATIC CHOKE

  1. Remove the fast idle cam retainer.
  2. Remove the thermostatic choke spring housing retaining screw, and remove the clamp, housing, and gasket.
  3. Remove the choke housing assembly retaining screws. If the air horn was not previously removed, remove the choke control rod retainer. Remove the choke housing assembly, gasket, and the fast idle cam and rod from the fast idle cam lever.
  4. Remove the choke lever retaining screw and washer. Disconnect the staged choke control rod from the choke lver. Remove the choke lever and fast idle cam lever from the choke housing.