8. With each successive flight, close the
needle-valve very slightly until, at the end of
about 10 flights, the needle is set for full
power. Do not "over-lean" the mixture in an
attempt to extract more power.
If overheating should be suspected at any
time during flight (i.e.if the engine begins to
"labor") reduce power by partially closing
the throttle and land the aircraft to enable
the needle-valve to be readjusted to a
richer setting.
CARBURETOR
These engines are equipped with a throttle
type car-buretor which provides a wide range
of engine speed control. With the throttle lever
linked to a suitable servo in the model,
movement of the throttle control on the
transmitter will enable engine to be varied,
proportionally, from idling speed to full power.
The carburetor of your engine has been factory
set for the approximate best results and no
adjustment (except to the needle-valve) should
be required provided that the fuel tank is
correctly located, as previously described.
After the engine has been run-in, check the
operation of the throttle according to the
following chart. Re-adjust the controls only
when necessary.
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