Cowling, Propeller And Spinner Installation - Hangar 9 Twin Otter ARF Assembly Manual

Step 30
Connect the fuel tank vent line (pink) to the pressure
nipple on the muffler and the feed line (green) to the
fuel inlet on the carburetor or needle valve assembly.
Step 31
Shown here is a tee fitting installed in the feed line.
You may choose to install a fuel filler dot in the
cowling or run a fuel into the tank compartment for
fueling purposes.
Step 32
Repeat steps 1 through 31 for the opposite side.
Twin Otter ARF Assembly Manual
Cowling, Propeller and Spinner
Installation–2-Stroke
Parts Required
Wing Panels (left and right)
Cowlings (2) Clear cowlings (2)
Propellers (2) Spinners (2)
#2 x 1/4-inch woodscrews (8)
Tools Required
Ruler Felt-tipped pen
#1 Phillips screwdriver
Rotary tool with cutoff wheel and drum sander
Step 1
Use scissors to trim the clear cowling so it will fit over
the fiberglass cowl. Transfer the mounting holes to the
clear cowl to serve as a reference.
Step 2
Cut openings in the clear cowling so that it can be
mounted without obstruction from the engine. You may
find it easier to remove the needle valve until after the
cowl is fit.
Step 3
Slide the clear cowling over the fiberglass cowl and
mark the required cutouts with a felt-tipped pen. Then
use a cutoff wheel and drum sander in a rotary tool to
make the cutouts in the fiberglass cowling.
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