Chainsaw Repair
Husqvarna - Stihl - Poulan - Jonsered - Dolmar chainsaws and more => Husqvarna => Topic started by: JP Terp on May 19, 2012, 09:39:14 am
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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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83 Husqvarna 181 IPL http://www.husqvarna.com/ddoc/HUSI/HUSI1984_AAaa/HUSI1984_AAaa_I8400005_.pdf
Another just in case 82 http://www.husqvarna.com/ddoc/HUSI/HUSI1982_AAaa/HUSI1982_AAaa_I8200003_.pdf
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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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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
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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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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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Ok. There is no ground wire now so I'll put one in and see how it does.
Thanks for the help!
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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 .
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Two pce coil. http://www.ebay.com/itm/360438464858?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1438.l2649 http://www.ebay.com/itm/360453213310?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1438.l2649
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Here is a look at the top module on a 288. (http://i1102.photobucket.com/albums/g457/rjcfritz/158.jpg)
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Looking at the fleaBay picture and Man of Stihl's picture
Looks like the red wire goes from the source trigger to the coil.
The blue wire goes from the source trigger to the shut off switch. Cannot see the wire on the other side of the switch that goes to a screw on the metal chassis?
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Okie dokie ,here ya go .Reference 281 .With the saw laying bar down recoil cover off .The left side of the coil has a blue wire going to the kill switch .Right side red wire which goes to the trigger unit .The wires are routed from the air box up around the cover under the recoil top side .You pull the recoil off it has another shrouding piece over the flywheel which is where the wires attach .
Because of the difference from Stihl to Husqvarna with the shock mounts the air box appears to pivot with the engine . As far I know it needs no ground bonding jumper as does Stihl with a set up like that .The trigger unit doesn't have a ground bonding jumper either .
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Ok, I've got it figured out. The original owner owner had jumped the blue wire directly to the trigger.
Thanks for everyone's help. I hope to repay you all with some help in the future!
This is a great sight!
Thanks again,
John
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Although I didn't run a continuity test I assume the two terminal points on the coil are common to one another .
As such electrically it would not make a diff which wire went where .In fact even a wire to the trigger then to the kill switch would have the same effect .