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Thank you for choosing a Magnum XLS series aircraft engine. The XLS .52A 
is a single cylinder, two-stroke engine incorporating ABC (Aluminum piston, 
Chrome plated Brass sleeve) technology for long life, high power output 
and easy break-in. The engine features a dual needle valve carburetor with 

optional rear-mounted needle valve for precise fuel/airflow metering, dual 

ball bearing-supported crankshaft, dual bushing-supported connecting rod, 

and a high-flow quiet muffler. Your Magnum XLS series engine was designed 

by expert engineers and built by master craftsmen using only the highest 

quality materials and CNC machinery. These qualities provide the long life 

and dependability you have come to expect from an engine of this caliber.

Magnum  XLS  series  model  aircraft  engines  will  consistently  give  you 
dependable performance and reliability and will be a source of satisfaction 
and pleasure if you follow these instructions as to the engine’s proper and 

safe use. You alone are responsible for the safe operation of your engine, 

so act sensibly and with care at all times. This Magnum XLS series model 
aircraft engine is not a toy. It is a precision-built machine whose power is 
capable of causing serious injury to yourself and others if abused or misused, 
or if you fail to observe proper safety precautions while using it.

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  Keep spectators, especially small children, at least 20 feet away from the 

engine while it is running. 

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  Mount the engine securely in the aircraft or on a suitable engine test stand 

to run the engine. Follow the mounting instructions in your aircraft's 
instruction manual or on the plans for individual mounting recommendations. 

Do not clamp the engine in a vise to test-run it.

  

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  Use the recommended size propeller and follow the proper procedure for 

mounting the propeller. Use the correct size wrench to tighten the propeller 
nut. Do not use pliers.

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  Inspect the spinner, propeller, and propeller nut on a regular basis, looking 

for any signs of nicks, cracks or loosening.

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  To stop the engine, adjust the throttle linkage to completely close the throttle 

barrel and therefore cut off the fuel/air supply. You can also pinch the fuel 

line to stop the engine, but only if it is accessible. Do not throw anything into 
the spinning propeller or attempt  to use your hands to stop the engine.

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  While the engine is running, stand behind the engine to make any adjustments 

to the needle valves. Do not reach over or around the propeller. Do not lean 
toward the engine. Do not wear loose clothing or allow anything to be drawn 
into the spinning propeller while the engine is running.

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  If you need to carry your model while the engine is running, be conscious 

of the spinning propeller. Keep the aircraft pointed away from you and others 
at all times.

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  Do not use a tight-fitting cowl over the engine. It can restrict air from flowing 

over the engine, which could result in engine damage from overheating. 

For proper cooling, the total cowl air-exit area should be 30% greater 

than the total air-intake area.

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Global Services 

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18480 Bandilier Circle 

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Fountain Valley, CA 92708 

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Phone: (714) 963-0329 

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Fax: (714) 964-6236 

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Email: [email protected]

For product warranty information, please refer to the

warranty card provided with your engine.

Magnum XLS series engines are distributed exclusively by Global Hobby Distributors

All contents copyright © 2009, Global Hobby Distributors, August 2009

Displacement .................................................52ci (8.47cc)
Bore / Stroke .................................................22.4mm / 21.5mm
Practical RPM ...............................................2,200 - 18,000

Weight w/Muffler

 ...........................................17.4oz

Crankshaft Thread Size ................................1/4-28

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  ABC Piston and Sleeve

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  Dual Ball Bearing-Supported Crankshaft

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  Dual Bushing-Supported Connecting Rod

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  High-Flow Quiet Muffler for More Power

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  Rear-Mounted Needle Valve Option Included

Engine Orientation

Your XLS series engine can be orientated in any position on the firewall. Keep 

in mind that when the engine is mounted inverted, carburetor adjustments 
will need to be made differently and the fuel tank may need to be lowered. 
(See fuel tank size and orientation to carburetor on the next page.)

XLS .52A AIRCRAFT ENGINE

SPECIFICATIONS AND FEATURES

INTRODUCTION

BECOMING FAMILIAR WITH YOUR ENGINE

If you are familiar with the operation of two-stroke model engines or just 
can't  wait  to  run  your  new  engine,  please  read  through  the  Quick-Start 
Guide included. The Quick-Start Guide will help you get started right away 
and also includes some good recommendations. We do recommend reading 

through these Operating Instructions in their entirety to familiarize yourself 

with the features and operation of your new engine. We have also included 
a Troubleshooting Guide should you encounter any problems.

Please use the photos below to familiarize yourself with the components of 
your new Magnum XLS series engine.

CAUTION - PLEASE READ BEFORE USE!

ENGINE INSTALLATION

XLS .52A

AIRCRAFT ENGINE

P/N 210760

*Due to running manufacturing 

changes  and  improvements, 

your  engine  may  differ  slightly 

from that shown.

OPERATING

INSTRUCTIONS

Содержание XLS .52A

Страница 1: ...tments to the needle valves Do not reach over or around the propeller Do not lean toward the engine Do not wear loose clothing or allow anything to be drawn into the spinning propeller while the engine is running l If you need to carry your model while the engine is running be conscious of the spinning propeller Keep the aircraft pointed away from you and others at all times l Do not use a tight f...

Страница 2: ...The idle stop screw holds the throttle barrel in the carburetor body and also adjusts the closure of the throttle barrel We recommend adjusting the idle stop screw to allow the throttle barrel to close completely This will allow you to adjust the idle speed via your transmitter therefore you will need to set up your transmitter throttle trim lever to keep the engine at a low idle when the trim lev...

Страница 3: ...sing an electric starter it is not necessary to prime the engine The starter turns the engine over fast enough that the engine draws fuel on its own Priming the engine prior to using an electric starter can cause the engine to hydro lock flood Turning the engine over with an electric starter while the engine is flooded can cause extreme damage to the engine and or cause the propeller assembly to c...

Страница 4: ...tachometer this should be between a 200 300 rpm drop q 3 With the engine running at full power carefully lift the nose of the aircraft about 45º into the air The mixture should not become too lean but you may hear a slight increase in rpm If the engine sags or loses rpm when you hold the nose up the mixture is too lean If this is the case slightly richen the mixture and follow the test once more I...

Страница 5: ...e you will find helpful This Quick Start Guide should not be used as a replacement for the Operating Instructions included rather it should be used along with the Operating Instructions We highly recommend reading through the Operating Instructions to familiarize yourself with each part of the engine along with the proper procedures for engine break in and tuning Engine Preparation q 1 Mount the e...

Страница 6: ...olts 4 Engine does not transition A Failed and or wrong type glow plug A Replace with new recommended glow plug B Old and or wrong type fuel B Replace with new recommended fuel C High speed needle valve set too rich C Set high speed needle valve to leaner setting D Low speed needle valve set too lean D Set low speed needle valve richer E Low speed needle valve set too rich E Set low speed needle v...

Страница 7: ...buretor Base O Ring 282412 40845 Low Speed Needle Valve O Ring 282452 46845F High Speed Needle Valve O Ring 282501 91137 Fiber Washer 282608 46837F Idle Stop Screw with Nut 283022 S40801F Carburetor Assembly Complete 283023 S40803F Carburetor and Rear Needle Valve Assemblies 284206 12830 High Speed Needle Valve Seat 284220 S52103X Cylinder Head 284221 S52112 Cylinder Head Gaskets 2 284222 S52203 P...

Страница 8: ...DIMENSIONS A 3 3 8 B 3 1 2 C 4 3 4 D 2 7 8 E 3 1 2 F 11 16 G 1 1 8 H 1 7 16 I 1 3 4 J 2 1 16 K 1 1 16 L 1 7 16 M 1 3 4 N 7 16 Use this drawing to help you determine engine mounting requirements Drawing is not to scale and is generic in nature XLS ...

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