Seagull Models 337 Skymaster Specifications download pdf (Page 9)

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 4) Test fit the stopper assembly into the

tank. It may be necessary to remove some of

the flashing around the tank opening using a

modeling knife. If flashing is present, make

sure none falls into the tank.

Vent tube.

Fuel pick up tube.

Fuel fill tube.

 5) With the stopper assembly in place,

the weighted pick-up should rest away from

the rear of the tank and move freely inside the

tank. The top of the vent tube should rest just

below the top of the tank. It should not touch

the top of the tank.

 6) When satisfied with the alignment of

the stopper assembly tighten the 3 x 20mm

machine screw until the rubber stopper ex-

pands and seals the tank opening. Do not

overtighten the assembly as this could cause

the tank to split.

Fuel tank.

8) Use plywood template to hold in place the

fuel tank with C/A glue to secure the fuel tank

inside the fuselage.

9) Use balsa stick to help prevent moveable

from transferring to the fuel tank.

FUEL TANK INSTALLATION BEFORE.

You should mark which tube is the vent

and which is the fuel pickup when you attach

fuel tubing to the tubes in the stopper. Once

the tank is installed inside the fuselage, it may

be difficult to determine which is which.

 7) Slide the fuel tank into the fuselage.

Guide the lines from the tank through the hole

in the firewall.

Fuel tank.

Epoxy

A.

B

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