Evolution
®
High-Performance Muffler
(.46–.60 NX) INSTRUCTIONS
NOTICE
All instructions, warranties and other collateral documents are subject to change at the sole discretion of Horizon Hobby, Inc. For
up-to-date product literature, visit www.horizonhobby.com and click on the support tab for this product.
MEANING OF SPECIAL LANGUAGE
The following terms are used throughout the product literature to indicate various levels of potential harm when operating this
product:
NOTICE: Procedures, which if not properly followed, create a possibility of physical property damage AND a small or null possibil-
ity of injury.
WARNING: Procedures, which if not properly followed, create the likely probability of physical property damage AND may lead to
a dangerous condition or cause death or serious injury to the user, OR procedures, which if not followed, create the high prob-
ability of superficial injury.
WARNING: Read and follow all instructions and precautions before use. Failure to do so could result in product malfunction,
damage and injury.
WARNING: Do not touch this product while in use. It can become extremely hot which could lead to burns.
NOTICE: Only use this product with parts specified in the product literature
This is a sophisticated hobby product and NOT a toy. It must be operated with caution and common sense and requires some
basic mechanical ability. Failure to operate this Product in a safe and responsible manner could result in injury or damage to
the product or other property. This product is not intended for use by children without direct adult supervision. Do not attempt
disassembly, use with incompatible components or augment product in any way without the approval of Horizon Hobby, Inc. This
manual contains instructions for safety, operation and maintenance. It is essential to read and follow all the instructions and
warnings in the manual, prior to assembly, setup or use, in order to operate correctly and avoid damage or serious injury.
INTRODUCTION
Thank you for buying an Evolution High-Performance Muffler. This muffler has been developed and tested for use with our small
case Evolution 60NX, 52NX and 46NX engines. This muffler will fit on other engines with the same mounting dimensions.
We’d like to hear your comments on the results you get from this Evolution Muffler.
INSTALLATION
The Evolution Muffler comes with two screws (these screws are available as replacement part EVOM101).
1. Remove the existing muffler and screws from the engine.
2. Apply sealant (hi-temp RTV) on the face of the muffler port. The face of the exhaust port may be rough, so a seal may be
needed. A paper gasket is not recommended, because paper tends to compress then loosen. Because of the nature of the
product, a small leak is acceptable.
3. Put the Evolution Muffler screws in the engine exhaust mounting holes and apply a small amount of thread sealant to the
screws. (We recommend PAAPT42 (blue) so you can remove the muffler when you want).
4. Tighten the screws into the Evolution Muffler using a T-handle instead of an L-handle wrench. Take care to tighten both
screws evenly to prevent distorting the engine case.
5. Connect the muffler pressure fitting to the fuel tank using medium-size silicone tubing. Make sure the tubing is not bent
and does not form a kink, so air flows freely. Connect the tank to the carburetor using the largest tubing that fits and seals.
Filters may be used, but only when clean with no leaks (we recommend the HAN143 Pro Fuel Filter).
6. Engine carburetor, low-speed and high-speed needles may need adjustment after installation of this muffler. Refer to your
engine manual for instructions.
Note: Due to increased rpm produced from the muffler, we recomend using the glow plug HAN3011.
© 2010 Evolution
®
is an exclusive brand of Horizon Hobby, Inc.
Created 4/10 www.evolutionengines.com 28400
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