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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 with moderate torque.

Important:

 After five 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.

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Securely tighten all engine mounting screws and re-check 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.

Introduction

Congratulations on your purchase of the newest and one 
of the most technically advanced 2-stroke model airplane 
engines in the world. Whether you are new to the sport of 
model aviation or are an experienced flier, you will enjoy 
the features of the new Evolution

®

 Engines NX Engine.

The Evolution NX Engine is designed to be the most 
powerful in its class, extremely easy to start and operate, 
and provide years of enjoyable service. It incorporates 
many unique design features, such as our Set Right

 

needle valve assemblies. Every feature is designed to 
ensure success with your new engine.

This user’s guide is intended to provide the basic 
information needed to operate and maintain your 
Evolution NX Engine.

Every Evolution engine has been baseline adjusted  
at the factory and is ready to fly . We recommend a short 
break-in period to become familiar with the engine.

Important: While the Evolution engine is extremely easy 
to operate, if this is your first experience flying a model 
airplane, it is highly recommended that you have the help 
of an experienced modeler during the first few flights. 
Your local hobby store or flying club can put you in touch 
with an experienced pilot in your area.

Low-Speed Needle

High-Speed Needle

Muffler

Muffler

Glow Plug

Glow Plug

Throttle Arm

Muffler Nipple

Fuel Nipple

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