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MTH BIG BOY
ARTICULATED STEAM ENGINE
OPERATING INSTRUCTIONS
Thank you for purchasing the MTH die-cast Big Boy steam locomotive.
The engine’s die-cast body and tender are built to ¼ inch scale proportions
from the original Union Pacific prototype and is designed for operation on
any O-72 or larger O Gauge layout. The engine is compatible with most
standard AC transformers, (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 and tender are equipped with the ProtoSound® digital
sound and train control system which contains 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 Basic Operating
Instructions
found on pages 3 and 4 should be read so that you understand
the basics of the operating system.