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Carl Goldberg GBGA1088 User Manual

Page 23

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23

Fuel Tank

1.

Collect the following item

(1) fuel tank 500cc (16.91 oz.)

(1) rubber tank stopper
(1) clunk
(1) 3mm x 25mm screw
(1) cap washer large
(1) cap washer small
(2) 3mm x 40mm brass tube
(1) 3mm x 60mm brass tube
(1) silicone tube 4mm x 80mm
(3) silicone tube 5mm x 165mm

2.

Insert the 3mm screw through the center hole

in the large washer, through the center hole in

the rubber washer against the large side, and

screw the small washer on the back side.

3.

Insert the brass tubes through three of the

holes. They should be arranged so as the long

one will be on the right side of the plane and

the short one on the left side.
The tubes should extend out the front of the

cap 5/8”. Bend the long tube up at about a 20

degree angle. This should be adjusted so the

end of the tube almost touches the top of the

tank when installed.

4.

†

Install the 4mm silicone tube to the short brass

tube and install the clunk to the other end of

the silicone tube. This is the fuel pickup and

must be free to “flop” around in the tank so it

can pick up fuel in any attitude.

5.

†

Install the assembly into the tank so the vent

tube is turned up to the top of the tank and is

positioned on the right side of the tank. Tighten

the screw to expand the rubber cap. Don’t over

tighten or you could split the tank.

Top of tank

5. † Attach the three pieces of 5mm tubing to the

three tank outlets. They are different colors so

you can tell which are the two vents and which

is the fuel pickup after the tank is installed.

Make a note of which color you attach to which

tube. The short brass with the clunk is the fuel

pickup and must go to the carburetor. One of

the long brass tubes is the vent and should go

to the pressure outlet on the muffler. The sec-

ond vent can be used for filling the fuel tank but

will have to be plugged with a screw (Not

Included) so that the fuel will not run out.