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atc 125m new member please help


coletrain

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hello everyone i have an 1984 atc 125m and it now longer produces spark and my manual tells you what to do just not how to, today i was messing around looking for the grounds i got one off and wire brushed it and the other i could not get off to inspect...

so i was hoping i could find out how many grounds the 125m has and possibly if a more experienced member can walk me thru how to get it running again,and has this happened to anyone else?

p.s. while inspecting the coil i unplugged it brushed it off and while hooking it back a spark gapped from the prong to the wire so its getting spark... kind of

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Check the connection between the coil wire and plug boot. The plug boot should have a scew in the end that attatches to the coil wire. Unscrew the boot, make sure there is good, fresh wire at the end of the coil wire, clip it back a bit if you need to with a pair of diagonal cutters. When you have made sure you have good wire right at the end of the coil wire, firmly push the boot back on and gently screw it back on. You want it on well, but don't turn it too tight as that will damage the wires inside the coil wire. That is the one of the simplest scenarios and it wont cost you anything to check it so I would start with that. Beyond that, study that diagram that MWKE provided and start looking for damaged or loose connections, if you still are having problems, you will probably need to do tests on the ignition components. A good service manual will give you specs and directions on how to do these tests. I would definately check out the link that Ajmboy posted for you.

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