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installed in the model. The process is
as follows:
1.
Install the engine with the propeller
intended for your model. Open the
needle valve to the advised starling
setting and start the engine. If the
engine stops when the glow plug
battery disconnected, open the needle
valve to the point where the engine
does not stop. Run the engine for one
minute with the throttle fully open, but
with the needle valve adjusted for rich,
slow "four-cycle" operation.
2.
Now close the needle valve until the
engine speeds up to "two-cycle"
operation and allow it to run for about
10 seconds, then reopen the needle-
valve to bring the engine back to "four
cycle" operation and run it for another
10 seconds. Repeat this procedure
until the fuel tank is empty.
3.
Re-start and adjust the needle-valve so
that the engine just breaks into "two-
cycle" from "four-cycle" operation, then
make three or four flights, avoiding
successive "nose-up" flights.
4.
During subsequent flights, the needle
valve can be gradually closed to give
more power. However, if the engine
shows signs of running too lean, the
next flight should be set rich. After a
total of ten to fifteen flights, the engine
should
run
optimum needle-valve setting, without
loss of power as it warms up.
5.
After the completion of the running-in
adjust the carburetor at optimum setting
referring to "MIXTURE CONTROL
VALVE ADJUSTMENT" section and
"SUBSEQUENT
section.
Optimum Needle Setting (1)
Slowly advance the throttle to its fully open
position, then gradually close the needle-
valve until the exhaust note begins to
change 4-cycle to 2-cycle). At this point,
16
continuously,
on
READJUSTMENT"
its
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