R
E L E C T R I C T R A I N S
MTH SD40-2 DIESEL ENGINE
OPERATING INSTRUCTIONS
Thank you for purchasing the MTH Electric Trains SD40-2 diesel
locomotive. This ¼” scale reproduction of the famous SD40-2 locomotive
measures over 18” in length and weighs almost 6 pounds. Despite its scale
size, the locomotive is capable of operating on O-31 3-rail track with any
compatible AC transformer, (see page 34 for a complete list of compatible
transformers and wiring instructions) and is completely compatible with
most other 3-rail locomotives, rolling stock and accessories.
The locomotive is equipped with several deluxe features that are simple
and fun to operate. Each feature is described among the following pages
which should be read before the engine is operated. For those of you who
can’t wait to get started, the Quick Start Operating Instructions, found on
page 3, should be read so that you understand the basics of the operating
system. Those features marked for 2 and 3-rail engines are available in
both types of engines. Features not marked as such are only available in the
3-rail version.