Top Flite TOPA0906 - Manual (Page 20)

20
Adjust the length of the fuel tubing accordingly. When
satisfied, tighten the 3 x 25mm screw in the stopper
to secure it in place (do not overtighten). Mark the
side of the tank that must face up when installed in
the plane, and we also suggest marking the tubes in
the stopper.
o 3. Attach a 6" to 7" [152 to 178mm] piece of fuel
tubing onto each line coming from the tank. Insert the
tank into the fuselage with the correct side facing up
as far forward as it will fit.
o 4. Glue the 1/4" x 1/4" x 1-1/4" [6 x 6 x 32mm] hardwood
stick behind the fuel tank to secure it in place. (This step
can also be performed after step 8. You may want to slide
the tank back slightly when drilling a hole for the throttle
pushrod.)
o 5. Using four 8-32 x 1-1/4" [32mm] SHCS, four #8
flat washers, four #8 lock washers, and threadlocking
compound, attach the engine mount on its side to the
firewall. Position the mount so the engine head will
face the right side of the fuselage. Leave the screws
slightly loose. Test fit your engine between the mount
halves. Slide the mount halves against the sides of
the engine and finish tightening the mount screws.
o 6. Position the front of the engine drive washer
6-3/16" [157mm] from the firewall. If installing a .61
FX, the side of the firewall mounting box will need
to be notched to accommodate the needle valve.
Mark the location of the engine mount holes onto
the mount rails using a Dead Center Hole Locator.
Remove the engine from the mount and use a 8-32
tap and drill set to create threads in the four mounting