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Step 2: Installing the Stopper Assembly
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Carefully push the stopper assembly into the molded hole in the front of the fuel tank. Gently rotate the stopper
assembly until the aluminum vent tube rests just inside the bubble in the top of the tank.
☞
If you have trouble seeing the vent tube, hold the fuel tank assembly up to a bright light. This will illuminate the inside
of the tank.
❑
When satisfied with the alignment, tighten the machine
screw until the rubber stopper expands and seals the fuel tank
opening.
WARNING
Do not overtighten the screw. This could cause
the front of the fuel tank to split.
Step 3: Installing the Fuel Tank Assembly
❑
Cut two pieces of silicon fuel tubing to a length of 8" and install them onto the aluminum tubes at the front of the tank.
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For your convenience, we suggest marking the ends of the tubing "vent" and "pick-up" so you don't confuse them
when it comes time to connect them to the engine later on.
❑
Feed the ends of the fuel tubing through the predrilled hole in the firewall and slide the fuel tank into position, making
sure that the stopper assembly lines up with, and is pushed into, the predrilled hole in the firewall. When aligned properly,
the fuel tank should be pushed forward as far as possible and the back of the fuel tank should rest on the plywood fuel
tank support.
IMPORTANT
Make sure that the top of the fuel tank is toward the top of the fuselage. The top of the fuel tank has the
molded bubble in it.
❑
With the stopper assembly in place, double-check to make sure the fuel pick-up can move freely inside the tank.
Ideally, the fuel pick-up should be about 1/4" in front of the back of the tank.
❑
Cut and install several pieces of foam rubber between
the top of the fuel tank and the top of the fuselage to wedge
the back of the fuel tank securely into place. Alternately, you
could use silicon adhesive to glue the back of the fuel tank to
the plywood tank support.
☞
Make sure the foam will not interfere with installation of
the throttle pushrod wire. The throttle pushrod wire will pass
between the side of the fuel tank and the forward bulkhead.
IMPORTANT
Double-check that the fuel tank is held securely in place. You don't want it to come loose during flight!
