Your new K-Line by Lionel locomotive features a solid-state, electronic reversing unit utilizing
an up-to-date integrated circuit design. It operates as follows: each time the power
to the locomotive is interrupted, the engine changes state. This can be done by moving the
transformer control to the “OFF” position, or pushing the direction button on your
transformer, if the transformer is equipped with a direction button. The sequence of opera-
tion is forward-neutral-reverse-neutral-forward.
The engine can also be locked into any mode of operation by moving the reversing unit on-off
switch to the “OFF” position. This switch is located on the underside of the
locomotive chassis (labeled “OFF ON” in illustration). When this is done, the locomotive will
“lock” into the next mode of operation in the sequence. For instance, if the engine
is moving forward, then is stopped and the switch is moved to “OFF”, the engine will be
In addition, the K-Line by Lionel reversing unit has a forward-reset feature. Should the loco-
motive sit without power for a brief time, it will automatically start in the forward
direction upon being re-energized, regardless of the setting of the reversing unit ON-OFF
OPERATING YOUR MP-15 DIESEL LOCOMOTIVE:
Electronic Reversing Unit
This engine is equipped with an electronic horn. Press the horn button on your transformer or
horn controller to sound the horn. The horn blows as long as the button is depressed. Release
the button and the horn stops.
This dual motored engine can be operated in either mode. Locate the switch underneath the
engine labeled “Parallel” and “Series”. When placed in “Parallel” the engine achieves greater
power and speed. If the switch is in “Series” the locomotive will operate at more realistic
speeds and achieve slower starts. Experiment with this switch to determine which is better
Parallel vs. Series Operation