Lionel SD 60 Owner's Manual page 5

Your SD 60/70's 104 E Reverse unit
RUN
PGM
SMK
NO SMK
NOTE: With your 104 E reversing unit, positioning the switch in the PROG position locks
your engine into its last moving direction plus neutral. Positioning the switch in the RUN
position resumes normal sequencing operation.
Condition
Case #1: First power up or without power longer than 5 sec.
E unit off (switch in PGM position)
E unit on (switch in RUN position)
Case #2: Engine without power for less than 2.5 seconds
E unit off (switch in PGM position)
E unit on (switch in RUN position)
Summary Table of Engine Directions
Direction Change Cycle
N, Last-Dir, N, Last-Dir, etc.
5
Located under
the pilot
SND
NO SND
N, F, N, F, etc.
N, F, N, R, etc.
N, F, N, R, etc.