Author Topic: MS290 Mystery Wire  (Read 198 times)

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Offline Jyounge

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MS290 Mystery Wire
« on: January 10, 2016, 11:46:07 am »
We rebuilt our MS290 chainsaw and, of course, have an extra wire. Any idea what it is and where it goes?

Thanks guys!

Jenn

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Offline RoyM

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Re: MS290 Mystery Wire
« Reply #1 on: January 10, 2016, 11:54:52 am »
It looks like the ground wire for the switch. Turn the switch off and check for spark, you shouldn't have one.
Old age and treachery always overcome youth and enthusiasm

Offline jmester

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Re: MS290 Mystery Wire
« Reply #2 on: January 10, 2016, 02:16:37 pm »
Should go from the ignition module mount screw the ground screw on the cylinder.
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Offline jmester

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Re: MS290 Mystery Wire
« Reply #3 on: January 10, 2016, 02:25:19 pm »
They run 2 ground wires from the module screw to the cylinder. One wire has 2 ring terminals. The other has 2 ring terminals and 1 spade terminal to the contact spring in the lower left corner of the carb box.
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Offline Jyounge

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Re: MS290 Mystery Wire
« Reply #4 on: January 10, 2016, 07:18:32 pm »
Thanks guys!

 

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