Fairbank's morse Fm-j Rotory Magneto-Help

J Patton · Nov 24, 2011

Hi.I have a Fairbanks morse 1 1/2 Hp Z Style-D Engine.with a FM-J Rotory Magneto.this mag will fire when cranked real fast.it is gear driven by the engine.is there any way to make more spark with less cranking power? can not crank engine hand crank fast enought to start. do the magnut's go bad :?: thank you for any help. Jeff....

Kentb of SWMO · Nov 25, 2011

Likely your impulse spring is broken. The impulse spring does two things. One is it causes the mag to spin fast there when the impulse is tripped when hand cranking. It also cause the timing to be retarded so one can hand crank the engine WITHOUT the engine kicking back.

Kent

gtx1967jewison · Nov 25, 2011

Yes over time magnets can get weak &they can be easily
recharged by any good magneto shop.

LJD · Nov 25, 2011

Do you hear the mag clicking loudly when you are cranking it? If not, you've got impluse problems like Kentb of SWMO already mentioned.

J Patton · Nov 26, 2011

I wonder if recharging the magnet's will hold :?: can you buy a new magnet rotor :?: oh this a rotory mag. not a impuls mag.thank's so much for all the help

Jeff Patton

Fairbank's morse Fm-j Rotory Magneto-Help

J Patton

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Kentb of SWMO

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gtx1967jewison

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LJD

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J Patton

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