needle valve cushion the needle valve for protection
against road shocks and vibration. A fuel valve clip,
attached to the bottom of the needle valve, fits under
the tab of the float lever to insure proper response of
the needle when the float drops.
A balance tube in the air inlet of the carburetor
bore vents the float chamber to maintain balanced air
pressures in that chamber, assuring proper fuel
metering in all phases of engine operation.
2. MAIN WELL AND ECONOMIZER
Fuel in the float chamber is distributed to the
fuel passages of the four basic fuel metering systems
through the main well and economizer body. A study
of the passages in this assembly will insure a clearer
understanding of the explanation of the operation of
the four fuel metering systems.
MAIN METERING SYSTEM
MAIN WELL AND ECONOMIZER