`84 ATC 70 with no spark......

[OldManDM]

just picked up an `84 atc70 for my youngest today......trike has no spark.....i pulled the magneto off and cleaned up the points(which are new) and the surfaces on the inside of the magneto and the stator....checked the points to make sure they were opening when the magneto rotated around(waiting on a shop manual for it to arrive so i don`t know if the points are adjusted right)...and the previous owner had also replaced the coil with a "universal"coil...i tried both with it,and then reinstalled the factory coil he had removed,and still no spark....

what do ya`ll "experts" suggest?

thanks!

[OldManDM]

what?.....nobody has any ideas?

[Hornetpowerspor]

Maybe your condenser? You will need a soldering iron to change that. Set your point gap around .016 of an inch. The book calls for them to be a little closer, but this works best for me. I have 4 of these machines, and a friend of mine has about 10, and I have never seen one of those coils go bad.
Another thing to try is check all of your wiring for shorts. Sometimes when they sit in a barn for a while the mice seem to get to them.

[TeamGeek6]

Similar thing happened to me on a boat motor, had the coils wired to the opposite point and it wouldnt fire. The point had to break when the magnet aligned with the coil, and it was 180* off. Check the air gap between coil and rotor, about 0.014" typical. Not much else to go wrong except bad magnet (not likely) or bad coils.

[ATCnut]

You check the stator coil like I suggested at .org??

[OldManDM]

ok....i`ve checked the stator coil with an ohmmeter,and got a reading of .4 on one and .7 on the other....but the manual doesn`t give any specs on what it should be in order to tell if they are acceptable.....any suggestions anyone?