Stihl Kombi LIVES!

chim

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L4240HSTC with FEL, Ford 1210
Jan 19, 2013
2,649
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Near Lancaster, PA, USA
Sorry if this is old news to those of you with more life experience. It's something that I've never heard of in my 76 years. Guess I haven't gotten out much.

My Stihl 94R went from running fine to barely running yesterday till it finished cutting the weeds along the creek banks. I removed and cleaned the filter, cleaned and gapped the little spark plug and scratched my head. It wouldn't even rev up at that point.

Mentioned this to my BIL last night and he said he had the same thing happen to his Echo trimmer. He took it to a shop for repair. They fixed it while he waited - less than 5 minutes. The fix was to remove the spark arrestor, zap it with a propane torch to burn off the carbon and that's all. He told me he's done his a few times since then. I did mine this morning and after putting the spark arrestor back in it ran like new.

It couldn't be more convenient. The only things that need to be removed are a single screw and the arrestor itself. Pull the screen out with a long-nosed pliers, grab the torch and you're done in no time.
 
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OntheRidge

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Kubota L47 TLB, Homestead 55" grapple, LP 1684 rear blade, WR Long 84" snowplow
Nov 1, 2020
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Old school, we would take those out as soon as we got a new saw. Now, doing that will blow up your saw/trimmer/etc. So, yes, clean it, reinstall.
 
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Hugo Habicht

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G1900
Jun 24, 2024
702
963
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Ireland
Thank you very much for the tip !

I had three small engines that stopped working recently, a Stihl chainsaw, a Stihl strimmer and a whacker plate with a Honda engine. In all cases the problem was the spark plug. Put new ones in, ran fine. Checked the old ones: gap too small. Widened it, put in old spark plugs, everything back to normal.

So can anybody explain to me how the spark plug gap can get smaller??? I always thought the electrode burns off, hence the gap getting wider.
 
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MOOTS

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MX6000
Jun 27, 2019
2,181
2,704
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Canton, Georgia
IMG_5847.jpeg

IMG_5848.jpeg

That’s one of the first things I check when any 2 stroke comes across my bench.
 
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