Posted by zira (65.13.153.59) on July 31, 2009 at 19:18:39:
In Reply to: Fairbanks-Morse Magneto posted by Chris R on July 27, 2009 at 22:49:22:
The motor is probably a model AGN or AGND (essentially the same). Mag is an FMX I would guess. You can see a parts catalog here: http://www.wisconsinmotors.com/partcatalog-engineswm.html
Pick the AGN one & see if that is it. Larry's comments are right on. Clean the points really well, check the wires, plug & switch. If that doesn't work replace the capacitor. They are very robust magnetos.