User Manual

EXTRA 300S Instruction Manual
8
Attach the silicone fuel, feed and pressure pipe
to the tank. The lower pipe is the ‘feed’ and the
upper is the ‘pressure’ . The silicone fuel pipe
is the next of feed pipe.
Slide the tank into the fuselage from inside so
that the neck is at the top of the fuselage and
it locates through the engine bulkhead. Gently
secure it to the top horizontal former with the
cable tie .
INSTALLING THE STOPPER ASSEMBLY
! 1) Using a modeling knife, carefully cut
off the rear portion of one of the 3 nylon tubes
leaving 1/2” protruding from the rear of the
stopper. This will be the fuel pick up tube.
! 2) Using a modeling knife, cut one length
of silicon fuel line. Connect one end of the line
to the weighted fuel pickup and the other end
to the nylon pickup tube.
! 3) Carefully bend the second nylon tube
up at a 45º angle. This tube is the vent tube.
To set the angle of the vent tube use a lighter
or heat gun to heat the tube (do not melt the
tube).
PARTS REQUIRED
FUEL TANK
! {1} Molded Nylon Fuel Tank
! {1} Preassembled Stopper Assembly
! {1} Metal Weighted Pick-Up
! {1} Silicon tube
! 5) With the stopper assembly in place,
the weighted pickup 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 3mm 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.
When the stopper assembly is installed in the
tank, the top of the vent tube should rest just
below the top surface of the tank. It should
not touch the top of the tank.
! 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.
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 each of them.
Vent tube
Fuel Pickup Tube
Fuel fill Tube