R
E L E C T R I C T R A I N S
MTH PA POWERED B-UNIT
OPERATING INSTRUCTIONS
Thank you for purchasing the MTH Electric Trains PA B-Unit locomotive.
This ¼” scale reproduction of the famous PA B-Unit locomotive measures
over 16 1/2” in length and weighs over 4.5 pounds. Despite its scale size, the
locomotive is capable of operating on O-31 3-rail track with any compatible
AC transformer (see the chart on page 10 for a complete list of compatible
transformers and wiring instructions) and is completely compatible with past
MTH PA AA and ABA diesel sets.
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 Basic Operating Instructions
found on Pages 3
and 4 should be read so that you understand the basics of the operating system.
Notice: This PA B Unit should only be run with engines equipped with
original Proto-Sound from QSI. It will not work with engines equipped
with Proto-Sound 2.0
