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| Restoration & Repair Tips Board |
Topic: H-4 magneto
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| rodeoman
05-16-2012 10:32:53
98.121.119.246
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what part(s) go bad first in a magneto... i bought 5 of them and want to get them hot and save them for years to come... i am somewhat familiar with the inside but want to learn more...thanks for any info
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| rodeoman
05-21-2012 14:44:50
98.121.119.246
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Re: H-4 magneto in reply to rodeoman, 05-16-2012 10:32:53
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| what part(s) go bad faster... condenser, coil or points... the coils look really good but that is on the outside and the inside is what counts for good service i just hate to put $100 in one and it be something simple
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| greenmech
05-21-2012 20:19:38
173.84.197.29
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Re: H-4 magneto in reply to rodeoman, 05-21-2012 14:44:50
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| Condenser and points are the most common troubles. You can test coils with an ohm meter to test for open winding. Ron Mn.
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| John B.
05-17-2012 19:25:38
38.114.64.135
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Re: H-4 magneto in reply to rodeoman, 05-16-2012 10:32:53
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| There are springs in the impulse coupling and locking pawls. The pawls will freeze up and may not engage the impulse coupling or make the magneto snap when it's being cranked over by hand. There are the armature roller bearings that get pitted. Other than that it's just your regular maintenance items that's already been mentioned.
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| greenmech
05-16-2012 20:42:37
173.84.197.29
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Re: H-4 magneto in reply to rodeoman, 05-16-2012 10:32:53
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| As Rusty said except add the condenser. Ron Mn.
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| rustyfarmall
05-16-2012 13:25:26
67.55.162.174
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Re: H-4 magneto in reply to rodeoman, 05-16-2012 10:32:53
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| Quoting Removed, click Modern View to see
The most common reason they don't work is simply because of dirty contact points. The next item would be the coil, and of course there is always the cap, rotor, etc. that can develop issues. If you want to get really deep into them, there is the impulse coupling, drive gears etc. Sometimes the actual magnet will get weak and need to be re-magnetized, but I've been told that very rarely happens on an H4.
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