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FM-X4A and FM-X4B 2911C

The FM X series is a later version of the FMJ series using different points and rotor but very similar. Still a dependable serviceable mag. Here is some service information to keep yours alive and well.


As always, make sure that the problem is indeed the magneto and test as described above. Many failures blamed on the mag include incorrect plugs and wires, fuel system issues and fouled plugs.





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