Installation Tips Owner's manual

2
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Builder's Guide
Sloshing / Sealing Compounds
Warning! Do not use sloshing compounds to "seal" the tank.
Sloshing compounds do not adhere to the plastic tank and will
plug and contaminate your fuel system.
Installation
Felt Lining
The only place felt lining is required on the rotationally
molded tank supplied by Sonex Aircraft is on the fuel tank
straps. You may use common fabric store felt and secure it
with a spray adhesive such as 3M Super 77.
Preparing the Fuel Tank Straps
After applying felt to the portion of the fuel tank straps that
comes in contact with the tank, install the tank straps on the
longerons and let them hang down.
Installing the Fuel Tank
Important: Before installing the fuel tank, the glare shield
MUST be riveted in place.
1. Place the fuel tank in position with the filler neck protrud-
ing into the filler box of the firewall.
2. Sit in the cockpit and push the fuel tank in to position
with the balls of your feet. When correctly installed the
fuel tank will come to a stop against the forward angle of
the cockpit.
The following characteristics of a typical fuel tank installation
may be noted:
a. Filler neck rests on the bottom of the filler box skin.
Use the balls of your feet to push the fuel tank into position.
b. There is a space be-
tween the slanted por-
tion of the fuel tank
and the glare shield.
c. Front fuel tank straps
do not fit perfectly
within the ridges in
the fuel tank.
d. There is little space
between the fuel tank
and the top of the rud-
der pedals.
Joining the Fuel Tank
Straps
Join the fuel tanks straps
This is how a typical fuel tank installation appears through the
filler box skin.
A space between the slanted
portion of the fuel tank and
the glare shield is normal.
together with AN hardware as
defined in the plans. Adjust
the length of the bolt and
use washers as needed. It is
normal for there to be a space
of up to 2" between the ends
of the straps.
Fuel tank straps joined.
Fuel Tank Installation and Warranty
Rev C. 03/05/10