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Operating Instructions
For the 46 cc Gasoline Engine with Walbro
Carburetor and Mechanical Throttle
Coupled CDI Ignition System.
Features
1
Easy -to-Adjust Wolbro Carburetor w/Pump
Includes Ignition Module, Kill Switch & Muffler
High -Strength Aluminum Throttle Bellcrank
Dual Ball Bearing Supported Crankshaft
Roller Bearing Supported Connecting Rod
Introduction
Thank you for choosing a Magnum gasoline aircraft engine. The 46cc is a single cylinder, two-cycle
gasoline engine incorporating an easy-to-adjust Walbro carburetor with pump, mechanical spark
advance ignition system and a high-quality, dual-ring piston for exceptional power and ease of use.
The Magnum 46cc gasoline engine also features a heavy-duty machined aluminum engine mount,
machined aluminum throttle bellcrank and a high- volume muffler. Your Magnum 46cc gasoline 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.
Becoming Familiar with your Engine
We strongly recommend reading through these operating instructions in their entirety to familiarize
yourself with the features and operation of your new engine. Whether this is your first gasoline engine
or if you've run them in the past, following these operating instructions closely will reward you with a
great running and trouble-free engine. Should you encounter any problems, we have included a
Troubleshooting Guide with your engine that you should feel free to refer to. Please use the photos
below to familiarize yourself with the components of your new Magnum 46cc gasoline engine.
46 cc Gas Engine Specifications :-
Displacement –
45.72 cc or 2.79 cu in
Bore -
42 mm
Stroke -
33 mm
Practical RPM -
1800 ~ 8200 rpm
Weight -
1800 gm.
Propeller -
18 x 8 ~ 20 x 10
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Summary of Contents for Magnum 46cc
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Page 1: Operating Instructions
18 x 8 ~ 20 x 10 Introduction Thank you for choosing a Magnum gasoline aircraft engine. The 46cc is a single cylinder, two-cycle gasoline engine incorporating an easy-to-adjust Walbro carburetor with pump, mechanical spark advance ignition system and a high-quality, dual-ring piston for exceptional power and ease of use. -
Page 2: Engine Installation
This Magnum 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, misused or if you fail to observe proper safety precautions while using it. - Page 3 Ignition System Installation The ignition module should be mounted to your model’s firewall, as far away from your airborne radio equipment as possible, and protected from excessive heat. We recommend securing it into place using double-sided tape or silicone glue. The ignition system includes a kill switch which should be mounted in a convenient location on the outside of the model.
- Page 4 Propeller Recommendation The diameter and pitch of the propeller needed for the 46cc gasoline engine will vary greatly depending on the application the engine is used in. The weight, drag and the type of model and how you intend to fly it are all factors in determining the correct size propeller to use.
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Page 5: Starting Procedure
Starting Procedure The starting procedure for the 46cc gasoline engine is actually quite simple. For ease of starting we recommend using a high-torque electric starter with a quality 1 2V motorcycle battery or a car battery. The engine can be started by hand, but only using a chicken stick. -
Page 6: Running The Engine
IMPORTANT Your 46cc gasoline engine does not require it be run on a test stand and be broken in. It is flight ready. Be aware though that when the engine is new, it won't produce the rpm and power that an engine that's been running a while will. -
Page 7: Warranty & Service
Rotate the crankshaft several times to distribute the oil, then reinstall the spark plug. Warranty service Your Magnum engine is guaranteed to be free of defects in parts and workmanship for a period of 12 months from the date of purchase. The manufacturer’s guarantee covers failures of the engines due to materials, workmanship or production defects.