Cleaning & Inspection
Clean carburetor castings and metal parts (except as noted) in cleaning solvent and dry with air. Do not clean pump plunger, pump shaft boot, automatic choke cover and coil assembly, or auxiliary throttle valve assembly in cleaning solvent. Clean pump plunger in gasoline, make certain vapor check ball in plunger is free. Clean auxiliary throttle valve assembly with warm water and soft brush, air dry, make certain shaft is not bent and that valves operate without binding. Blow out all passages with compressed air, remove all carbon deposits
NOTE:
(Welch plug in end of vacuum piston cylinder can be removed by piercing plug with sharp instrument and then prying plug out to clean carbon from cylinder and slots).
Inspect all parts for wear and damage and replace as necessary.