10
YAK 54 -
ITEM CODE: BH48
.
Instruction Manual
Do not secure the tank into place per-
manently until after balancing the
airplane. You may need to remove the
tank to mount the battery in the fuel tank
compartment.
Blow through one of the lines to ensure
the fuel lines have not become kinked inside
the fuel tank compartment. Air should flow
through easily.
7. Using a modeling knife, cut 3 lengths of
fuel line 150mm long. Connect 2 lines to the
2 vent tubes and 1 line to the fuel pickup tube
in the stopper.
8. Feed three lines through the fuel tank
compartment and through the pre-drilled hole
in the firewall. Pull the lines out from behind
the engine, while guiding the fuel tank into
place. Push the fuel tank as far forward as
possible, the front of the tank should just about
touch the back of the firewall.
Fuel tank.
Tie wrap.
Left side.
Right side
5. 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 of it falls into 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 over
tighten 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.
3. Carefully bend the second nylon tube up
at a 45 degree angle (using a cigarette lighter).
This tube will be the vent tube to the muffler.
4. Carefully bend the third nylon tube down
at a 45 degree angle (using a cigarette lighter).
This tube will be vent tube to the fueling valve.
9. To secure the fuel tank in place, apply a
bead of silicon sealer to the forward area of the
tank, where it exits the fuselage behind the en-
gine mounting box and to the rear of the tank at
the forward bulkhead.
