DLE 120 - Manual (Page 7)

7
7. Secure all connections with heat shrink tubing. (not supplied).
8. Install the remaining silicone wire covers over the ignition wires.
9. Install the spark plugs into the cylinders (7-8lbs torque). Do not
overtighten.
Installing the DLE-120 on Your Airplane
Note: The DLE-120 must be installed on a minimum 3/8" [9.5mm]
plywood fi rewall.The fi rewall must be securely glued to the airplane.
Use triangle stock and pin the fi rewall with hardwood dowels to
reinforce the fi rewall glue joints. Never install the DLE-120 onto a
fi rewall thinner than specifi ed because it may fail due to the power
of the engine.
Note: The overall length of the engine from the back of the engine
mount to the face of the propeller drive hub is 7.32" [186 mm].
1. Use the supplied template (on the back cover of this manual) to
drill the engine mounting bolt holes.
2. Install (4) 5mm blind nuts (not
included) into the back side (non-
engine side) of the fi rewall. Install
the engine to the fi rewall using
(4) 5x45mm SHCS with 5mm
lock washers and fl at washers
(not included) with the included
standoffs. Use threadlocking
compound, such as Great Planes ® Pro ™ Threadlocker (GPMR6060),
on the screws where they thread into the blind nuts.
3. Install the fuel tank in the airframe. Use only 1/8" [3.175 mm]
gasoline-safe fuel lines and a gasoline safe fuel tank stopper. One
line should go to the carburetor (see page 14, Fuel Inlet) and the
other is to be used as a vent (a vent line is simply an open ended
fuel line from the fuel tank which exits the engine compartment or
the fuselage; most vent lines exit at the bottom of the fi rewall).You
can fi ll the tank by using the carburetor line as fi ll line if you have
access to it or install a third line to be used as fi ll line. Installing a
third line is the cleanest and easiest way to add fuel. An alternative
fueling set up is a 2-line system with a T-fi tting approved for gasoline
use. Be sure to use a fi ller plug with either a 2 line or 3 line set-up.
It is a good idea to add an extension to the vent line as shown, that
goes up and to the rear of the tank. This helps to avoid draining fuel
from the tank when the model is pointed down.