Author Topic: 181 wiring  (Read 520 times)

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Offline JP Terp

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181 wiring
« on: May 19, 2012, 09:39:14 am »
Hello everyone,
I'm a little new to chainsaw repair but I'm enjoying the learning. I recently got a husky 181 that is in good mechanical shape but has no stop switch. The original owner just choked it to shut it off and that's what I've been doing. I picked up a new switch to install but I can't figure out the wiring. The original owner removed the switch and changed the wiring. Does anyone have a wiring diagram or can someone explain what wires go where?
I appreciate all the information provided and look forward to get this saw running again.

John

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Offline Cut4fun .

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Offline 660magnum

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Re: 181 wiring
« Reply #2 on: May 19, 2012, 05:06:38 pm »
There should be a spade tab electrical connector on the coil with nothing attached to it.

You must run a wire to this spade terminal and back to a switch and then to crankcase ground.

When the spade terminal is connected to ground, the ignition will not work. In other words, the switch is used to short out the magneto to kill the engine.
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Offline JP Terp

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Re: 181 wiring
« Reply #3 on: May 19, 2012, 08:52:52 pm »
Thanks for the IPL,  but it doesn't show the actual connections. In other words, it doesn't show what wires actually connect to the switch.  The 181 switch has 2 spade terminals. Where do the wires come from that connect to it?  All current wires have been cut and respliced,so I can't tell what originally went where.

Thanks for the quick Replies!

John

Offline Cut4fun .

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Re: 181 wiring
« Reply #4 on: May 19, 2012, 09:03:54 pm »
I dont own a 181, so a WAG.

Is this how the 181 stop switch is guys?  2 spades on the on/off switch. 1 should go to the ground on the case somewhere and 1 to the coil spade. 
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Offline 660magnum

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Re: 181 wiring
« Reply #5 on: May 19, 2012, 09:25:24 pm »
As cut4fun said, one spade of the switch goes to a crankcase screw.

The wire on the other switch spade goes to the spade on the coil.
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Offline JP Terp

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Re: 181 wiring
« Reply #6 on: May 20, 2012, 05:19:02 am »
Ok. There is no ground wire now so I'll put one in and see how it does.
Thanks for the help!

Offline Al Smith

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Re: 181 wiring
« Reply #7 on: May 20, 2012, 08:09:11 am »
Take heed that ground has be bonded to the actual engine for it to work .If I get a chance I'll take a peek at either a 181 or 281 I have in the shed . Can't remember which model it is except it needs seals which I've miss placed somehow which comes as no surprise .


Offline man of stihl

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Re: 181 wiring
« Reply #9 on: May 20, 2012, 09:40:05 am »
Here is a look at the top module on a 288.
Ron

 

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