Engineering and Research Corporation Ercoupe 415-C, Pilot Operating Handbook, Page: 19 / 27

19
ENGINE COMPRESSION CHECK
While the engine is warm and with the ignition switch turned "off,"
pull the motor through four complete compression strokes to check
for weak compression of any cylinder. An indication of poor
compression should be checked with a competent engine man for
his final decision.
Note: Do not pull engine through by hand immediately after
running, as the engine may start
IGNITION SWITCH
The switch key is numbered and this number should be recorded in
the log book for future reference in ordering duplicate keys.
FUEL SYSTEM
The engine driven fuel pump moves fuel from the wing tanks to the
six gallon fuselage header tank. Excess fuel drains from the header
tank overflow line back to the wing tanks. Fuel is gravity feed from
the header tank to the engine carburetor. In case of fuel pump
failure, the engine will continue to function until the six gallon
header tank is empty.
The Main Fuel Valve is located approximately halfway between the
brake handle and the pilot's control wheel shaft under the
instrument panel. This main valve should be ON (lined up with
down pipe) at all times except in case of an emergency.
The Wing Tank Shut-Off Valve is located on the right side skin
forward of the seat. The valve handle should be ON (lined up with
fuel line) and secured with a piece of brass safety wire. The only
time this valve should be off is in a case of emergency or a
malfunction. If the valve is turned OFF, the fuel cannot be pumped
from the wing tanks to the header tank and the engine fuel supply
and the remaining flying time, is limited to what fuel remains in the
header tank.