craftsman 358.351081 chainsaw


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Old 05-23-12, 08:36 AM
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craftsman 358.351081 chainsaw

I have a craftman 358.351081 (poulan I think) 2.6 18" chainsaw. Several years old but has served me well. Last october it would not restart after use. I drained fuel & shelved it till spring. Well cleaned it up changed the plug, new fuel and it still wont start. Tried starting fluid still no go. I pulled the plug and checked for spark there is a tiny very tiny spark. I am not sure what is normal. The plug was gapped at .025 same as old??. I checked the cylinder for scorring found none it appears to have compression. Is there any chance coil is gone bad or weak. It was a good saw but isn't worth pouring money into. any ball park estimate on a coil? My first thought is weak, no or not enough spark. Any thoughts are appreciated.
Thanks
Rich
 
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Old 05-23-12, 09:55 AM
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If it is sparking, the coil is probably fine. Is the plug wet? Can you put a little gas into the spark plug hole, put the plug in, give it full throttle and see if it will start like that?
 
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Old 05-23-12, 12:01 PM
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Cheese- the plug was not wet. I poured a teaspoon or so into plug hole. Still no start or even a sputter.
Thanks
Rich
 
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Old 05-23-12, 04:38 PM
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Try gapping the plug a .050" and see if it still sparks. If so, I'd say the coil is good enough. Do you have access to a compression gauge?
 
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Old 05-27-12, 05:06 PM
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I did gap the plug at .050 and I do have spark. I will have access to a compression tester in the next couple of days. Any idea what range would be acceptable. Also what is the correct spark plug gap for this engine?
Thanks
Rich
 
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Old 05-27-12, 07:45 PM
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.025" to .030" is good for the plug. On a 2-stroke, I like to see 130 psi at least. It may run on a bit less, depending on the condition of the rest of the saw.
 
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Old 06-05-12, 06:00 AM
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sorry for delay waiting to get hold of compression tester. I got a reading of 60psi. dry. I injected some oil into cylinder and got a reading of 85psi. Strangest thing it started right up after injecting oil. It must be running on borowed time I
suspect. But thats about how often I use it.
 
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Old 06-05-12, 09:28 AM
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Yep, the oil boosted compression enough for it to start. I think it's useful life has ended.
 
 

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