Posted: 4/8/2015 11:18:07 PM EDT
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Alright so I have this minibike and it will not fire on time, only will backfire. Pulled flywheel and this is broken. Is this my complete issue with it not firing on time or running?
Sorry for vague picture, details, and all else. Not an expert by any means 
It's the little white wire on top of the flywheel bolt |
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Quoted:
So a broken magneto is my issue? Quoted:
Quoted:
Looks like a magneto as on an old Model T Ford.... So a broken magneto is my issue? Yes, amazing it fires at all. Once you replace it you have to make sure the spacing is proper as well or it won't have any spark. |
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The rotor is usually connected to the crankshaft with a soft metal "key", which is a small rectangular shaped bar of metal that fits into slots on both the crank and rotor.
It is there to protect the engine if it is suddenly slowed down. Over time, this key may shear, and give you the timing problem you are seeing. If your key looks like a staircase, it's sheared, it should be a flat line across the two slots. |
| Disassemble and clean the magneto and parts with electronic parts cleaner. Then once clean examine for any issues with the magnets & coils, flywheel, crankshaft end etc. You won't be able to determine anything until you clean off the gunk and corrosion and examine. |
