Which Magneto do I need?

[Toby Nelson]

Does anybody know which model of Eisemann magneto was used on the #9 Auto Patrol graders? Niether of mine have the correct mag on them, and I would like to find the right one. These have the same engine as the L/PL big Twenty tractor.

The research I've done suggests I need either the G4 or GV4. Can anybody verify this?

[Old Magnet]

My source is kind of "round-about" but indicates a CM-4 Eisemann for the 4200G engine.
Need someone else to verify.

[Caterpillarman]

Hello, My partsbook for the #9 auto patrols shows the GV-4 to be the original mag they came with. Caterpillarman

[Toby Nelson]

Thank you, I appreciate the help.

[biggastractor]

Toby,

I sent you a PM

Biggastractor