Magnum XLS .15A Operating Instructions Manual

Thank you for choosing a Magnum XLS series aircraft engine. The XLS 

.15A is a single cylinder, two-cycle engine incorporating ABC (Aluminum 

piston, Chrome plated Brass sleeve) technology for long life, high power 

output  and  easy  break-in.   A  dual  needle  valve  carburetor  for  precise 

fuel/airflow metering is standard.  The XLS .15A also features a dual ball 

bearing-supported  crankshaft  and  a  dual  bushing-supported  connecting 

rod. 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  airplane  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 

airplane 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.

●

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

engine while it is running. 

●

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

to run the engine.  Follow the mounting instructions in your kit's instruction 

manual or on the plans for individual mounting recommendations.  Do not 

clamp the engine in a vise to test-run it.  

●

  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.

●

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

for any signs of nicks, cracks or loosening.

●

  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.

●

  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.

●

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

of the spinning propeller.  Keep the airplane pointed away from you and 

others at all times.

●

  Do not use a tight-fitting cowling 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 cowling air-exit area should be 30% greater than 

the total air-intake area.

1

Global Services  18480 Bandilier Circle  Fountain Valley, CA  92708  Phone: (714) 963-0329  Fax: (714) 964-6236  Email:  service@globalhobby.com

Displacement ................................................. 2.486cc

Bore ............................................................... 15.2mm

Stroke ............................................................ 13.7mm

Practical RPM ................................................ 2,500 - 18,000

Weight w/Muffler ............................................ 6.8oz

●

  ABC Piston and Sleeve

●

  Dual Ball Bearing-Supported Crankshaft

●

  Dual Bushing-Supported Connecting Rod

●

  Lightweight, High Power Output

●

  Anodized Cylinder Head

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 .15A AIRCRAFT ENGINE

SPECIFICATIONS AND FEATURES

INTRODUCTION

BECOMING FAMILIAR WITH YOUR ENGINE

If you are familiar with the operation of model engines or just can't wait to 

run your new engine, please read through the Quick Start Guide included.                  

This  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!

ENGINE INSTALLATION

XLS .15A

AIRCRAFT ENGINE

OPERATING

INSTRUCTIONS

P/N 210605

Muffler

Muffler Cone

Cylinder Head

Carburetor

Assembly

Crankshaft

Propeller Nut

and Washer

Drive Washer

Crankcase

Fuel Nipple

Rotor Bolt

Throttle Arm

Detent Spring

High Speed

Needle Valve

Low Speed

Needle Valve

Due to running manufacturing changes 

and improvements, your engine may 

differ slightly from that shown.