Great Planes Extra 300S 1.60 ARF - GPMA1365 - Manual (Page 15)

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4. Assemble the fuel tank as shown in the sketch. When
tightening the center screw be sure not to over tighten it.You
just want it snug enough to pull the rubber stopper tight
against the tank.
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5. Install the tank into the fuselage with the neck of the
tank through the firewall. Hold the tank in place inside the
fuselage by gluing a balsa stick (not included) across the
back of the tank.
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6. Install silicone fuel tubing, (not included in the kit) onto
the aluminum tubes from the fuel tank. The line with the fuel
clunk will feed to the fuel inlet at the needle valve and the
other will attach to the pressure tap on the muffler. For our
installation we chose to use an external fill valve. If you
choose to do this, follow the instructions with your particular
brand of fuel valve. Should you choose not to install a fuel
filler valve you can fill the fuel tank by removing the fuel line
to the carburetor and filling through it. Depending how you
cut out the cowling to accommodate the engine, the cowling
may make it difficult to access the carburetor. You can also
install a third line to the tank and use it for filling the tank.
The method you use is your choice but make your decision
before moving onto the installation of the fuel tank.
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7. Drill a 13/64" [5.2mm] hole in the firewall in line with the
throttle arm. Locate the 11-3/4" gray plastic tube. Roughen
one end of the tube with 220-grit sandpaper. Insert the un-
sanded end of the tube into the hole you have drilled. Glue
the tube flush to the firewall. Install a nylon clevis and
silicone clevis keeper onto the threaded end of the .074 x
17-1/2" [445mm] wire approximately 20 turns. Insert the
wire throttle pushrod into the plastic tube. The pushrod will
need to be bent to work with your particular engine and
muffler. When bending the pushrod wire be sure that the
wire does not make contact with the engine or muffler. Metal
to metal contact can set up radio interference. Be sure the
throttle pushrod operates smoothly after all of the bends
have been made.
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8. Attach the nylon clevis to the throttle arm. Install the
throttle servo into the servo tray inside the fuselage. Mount
it using the same method used on the servos you have
already installed. Install a screw-lock connector onto the
servo arm securing it to the arm with the nylon retainer.
Insert the wire into the hole in the screw-lock connector and
secure it with a 6-32 x 1/8" [3mm] socket head cap screw.
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1. Locate four hardwood cowl mounting blocks.
Position one block just above the trim stripe on the fuselage.
Using 6-minute epoxy glue one block to the firewall, flush
with the fuselage. Glue the second block to the firewall,
locating it approximately 4-1/2" [114mm] below the other
block. Repeat this on the other side of the fuselage.
INSTALL THE COWL
TOP OF FUSELAGE
SILICONE FUEL
LINE
PRESSURE TAP
TO MUFFLER
TO NEEDLE
VALVE
FIREWALL
FUEL CLUNK
FUEL TUBE
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