I went to use my stihl SH 86c leaf blower today and went to shut the engine off and it will not shut off from the switch!
So I got my insulating spark plug pliers and pulled the spark plug wire off the spark plug ,then once it cooled down I took the handle apart to have a look at the (on-off ) kill switch to find out what the problem is ,I had a quick visual of the wiring ,switch, and kill button all looked good so I took my ohm meter out and tested the switch it is good then I checked the two wires from switch to ignition coil and there was no continuity on the black wire ! I pulled the wire off the blower and did a wiggle test with the ohm meter on it and found a break in the wire. So if anybody out there has a stihl blower that doesn't shut off its most likely to be a open in the wires blue or black coming from the on -off switch to ignition coil, the break is most likely to be were the wires exit the handle . Check photos in my case both wires broke Remember this is a safety concern as you can't shut it off from the switch!image.jpgimage.jpgimage.jpgimage.jpg
So I got my insulating spark plug pliers and pulled the spark plug wire off the spark plug ,then once it cooled down I took the handle apart to have a look at the (on-off ) kill switch to find out what the problem is ,I had a quick visual of the wiring ,switch, and kill button all looked good so I took my ohm meter out and tested the switch it is good then I checked the two wires from switch to ignition coil and there was no continuity on the black wire ! I pulled the wire off the blower and did a wiggle test with the ohm meter on it and found a break in the wire. So if anybody out there has a stihl blower that doesn't shut off its most likely to be a open in the wires blue or black coming from the on -off switch to ignition coil, the break is most likely to be were the wires exit the handle . Check photos in my case both wires broke Remember this is a safety concern as you can't shut it off from the switch!image.jpgimage.jpgimage.jpgimage.jpg
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