@RickO posted:Possibly a cracked/ broken magnetic flywheel ring?
Location of the switch is on page 7 of the owners manual: https://www.lionelsupport.com/...ents/71-1103-250.pdf
I'm with Rick on this. I ran into the same problem on a similar engine. Here is the link to the replacement parts page on the Lionel web site under support. You can replace the ring for ~$1.50 or the
6101103540 | FLYWHEEL W/ MAGNET W/ COUPLING / SCALE PS-4 |
for ~$14.40
https://www.lionelsupport.com/...c2-b052-83cbf23439ef
You'll have to open her up as they say.
Dave.