Evolution Engines 120NX - Manual (Page 3)

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Mounting the Engine
Most model airplanes include an engine mount. It is
extremely important that the engine mount be securely
mounted to the airplane’s firewall and that the engine
is securely mounted to the engine mount. Follow the
instructions included with the airplane for mounting the
engine.
Important: Before each flying session, check that all
engine mounting screws are securely tightened.
Installing the Muffler
Using the included muffler mounting screws and lock
washers, attach the muffler with the included hex
wrench. Be sure the lock washers are placed over the
screws and that one gasket is placed between the muffler
and the engine. A second gasket is included as a spare.
Securely tighten both screws.
Important: After the first few runs, retighten the muffler
mounting screws. Heat and vibration from these first
few runs can cause the gasket to compress. Once the
muffler screws are retightened, they will remain tight and
leak-free until the muffler is removed. Also, tighten the
muffler thru-bolt at this time as well—loosen the lock
nut on the back of the muffler, tighten the thru-bolt via
the screwhead at the front of the muffler then retighten
the lock nut at the rear.
Throttle Linkage
A clevis is recommended for attaching the throttle
linkage to the throttle. Attach the throttle linkage to the
hole in the throttle arm (see photo above).
Turn on the radio. With the throttle stick at 1/2 throttle,
install the arm on the servo so that the arm is 90° to the
throttle pushrod.
Securely tighten all engine mounting screws and recheck tightness
before each flying session.
Attach the linkage to the throttle arm.
The muffler mounting accessory package includes mounting screws
(2), lock washers (2), muffler gaskets (2) and an L- wrench.
Low-Speed Needle
Needle Limit Collar
High-Speed Needle
Muffler
Muffler
Glow Plug
Glow Plug
Throttle Arm
Muffler Nipple
Fuel Nipple