I have a Neptune MC1 serial # A 101 RP
I HAVE A LOWER broken piston ring and I’ve broken my points while restoring the little motor.
Don’t know who to turn to for help.
Those points look an awful lot like Lauson lawnmower points.
If you can find a parts numbers for the points or rings, try searching
EBay for NOS parts.
Rings can be custom ordered from here…. https://ringspacers.com/