Page 43 - Aeronca 11AC Interactive Service Manual

FUEL SYSTEM

The welded aluminum main tank is located directly behind the firewall (capacity 15 gallons). Fuel is
gravity fed from tank to gascolator filter assembly and from gascolator to carburetor. A positive and
accurate method for checking fuel supply is provided with a float type fuel gauge located directly on top
of the fuel tank deck. The fuel shutoff valve is located on the engine control panel. A primer is furnished
to aid in cold weather starting.

AUXILIARY FUEL TANK

As standard equipment on the Aeronca Chief, an 8 gallon auxiliary tank has been incorporated as part
of the fuel system to provide greater cruising range. Fuel is gravity fed from the auxiliary to main tank
through a copper line passing along the left side of the cabin structure. The auxiliary tank is located above
and aft of seat and is provided with an overflow drain passing from the tank filler neck downward through
the fuselage frame and extending below the bottom fuselage covering.

A fuel gauge located just above the baggage compartment lid provides a visual check of the auxiliary fuel
supply.

GASCOLATOR FILTER ASSEMBLY
Located on the engine side of the firewall, the gascolator assembly affords a means of straining sediment
and foreign matter from the fuel flow. The gascolator is located at the lowest point in the system, therefore,
water is collected in the sediment bulb and care should be taken to check for its presence.

Caution: This check can be accomplished visually and should be a daily check. Operating in cold weather
and storing in warm hanger with an unfilled tank, also operating in a climate where high humidity ratio is
prevalent, are most probable causes for condensation and the presence of water in the fuel system.

Care should be taken to replace the bowl securely and re-safety. Gascolator gasket should not be used
more than once before being replaced. When draining gascolator bowl, filter screen should be cleaned and
checked for enlarged mesh or damage.

PRIMER
For cold weather starting, three slow movements of the primer pump as the propeller is being pulled
through, will force fuel directly into the induction system assuring quick, positive starting.

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