Evolution Engines NX User Manual

© 2006 Manufactured exclusively for Horizon Hobby, Inc. 877-504-0233

www.horizonhobby.com

9155

NT/NX Evolution

®

Engines

US E R G U I D E

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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 re-tightened, they will remain tight and leak­free until the muffler is removed.

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.

3

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 an experienced flyer, you will enjoy the
features of the new Evolution® Engines NT/NX Engine.

The Evolution NT/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 to operate and maintain your Evolution
NT/NX Engine.

Every Evolution Engine has been test run and adjusted
at the factory and is ready to fly with no adjustments or
break-in required.

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 shop 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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