Fuel Tank Installation - Hangar 9 Christen Eagle II 90 ARF Assembly Manual


7. Position the engine on the engine mount rails so the
face of the drive washer is 5 / inches (145mm) from the
11
16
firewall. Use a felt-tipped pen to mark the locations for the
engine mounting screws on the engine mount rails.

8. Remove the engine. Use a drill and 5/32-inch (4mm)
drill bit to drill the holes for the engine mounting hardware in
the engine mount rails.

We recommend removing the mounts
from the firewall and using a drill press
to drill the holes for best results.
Hangar 9 Christen Eagle II 90 ARF

9. Attach the engine to the engine mount using four
M4 x 30 machine screws, four M4 lock nuts and eight M4
washers. Place the washers between the head of the bolts
and engine mounting lugs, and between the mount rails and
nuts. Use a #2 Phillips screwdriver and 7mm nut driver to
tighten the hardware.

Fuel Tank Installation

Required Parts
Fuselage assembly Fuel tank
Stopper assembly Clunk
Fuel tubing, 550mm Plywood fuel tank former
Plywood fuel tank retainer

1. Locate the items for this section of the manual.

2. Carefully bend the tubes on the stopper. One will be
directed toward the top of the tank (vent tube) and the other
toward the bottom (fill tube). Use a tubing bender to avoid
kinking the tubing while bending.
21