Install The Power System - GREAT PLANES DIRTY BIRDY .60 ARF Instruction Manual

INSTALL THE POWER SYSTEM

The installation of an O.S.
section. O.S. has updated their engine line to now include a
.65 AX engine. The installation of the .65 AX engine is similar
to the .61 FX shown.
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1. Install the engine mount side mounted to the fi rewall
using four 6-32 x 1" [25mm] machine screws, four #6 fl at
washers, four #6 lock washers and thread locking compound.
Leave the screws slightly loose. Test fi t your engine between
the mount halves. Slide the mount halves against the sides
of the engine and fi nish tightening the mount screws.
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2. The fuel tank can be assembled as a two line system
consisting of a vent (pressure) line to the muffl er and a carb
line. Filling and emptying of the tank would need to be done
through the carb line, or an optional fuel fi ll valve (not included).
The tank can also be assembled as a three line system having
a vent line, carb line, and fi ll line. If installing a fi ll line, puncture
the top of the stopper above the sealed off fuel tube hole. The
fi ll and carb lines should extend out 1/2" [13mm] beyond the
stopper and the vent line should be bent upwards and left
uncut. With the tubes installed in the stopper, fi t the stopper
plates loosely in place with the 3 x 25mm phillips screw to
hold the assembly together.
® .61 FX engine is shown in this
Top of Tank
Vent
Fill and
Carb Lines
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3. Fit the stopper assembly into the tank with the vent line
pointing toward the top of the tank, but not touching. The fuel
tubing and clunks (fuel pickup) on the carb and fi ll lines should
almost reach the back of the tank but not touch. The clunks
must be able to move freely inside the tank when assembled.
Adjust the length of the fuel tubing accordingly. When satisfi ed,
tighten the 3 x 25 mm screw in the stopper to secure it in place
(do not over-tighten). Mark the side of the tank that must face
up when installed in the plane, and we also suggest marking
the tubes in the stopper.
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4. Insert the fuel tank through the plywood formers in the
fuselage (be sure that you are installing the tank with the
correct side facing up). Carefully push the tank forward until
the neck of the tank passes through the hole in the center of
the fi rewall.
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