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Burnt up stihl 290 chain saw 4 months old
The saw should have a pressure/vacuum test for air leaks. I just repaired a MS250 that never ran right (low hours) and the clam shell was leaking everywhere. It ran great when sealed up right.
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Burnt up stihl 290 chain saw 4 months old
Not to make light of any ones chainsaw problems but it brought a true story to mind.
A friend of mine had bought a new Lawn Boy two cycle lawn mower. While at work his wife loaned the Lawn Boy to her brother. After a couple hours the brother brought it back saying it quit and wouldn't restart, the brother knew nothing about gas/oil mix and used straight gas, it was shot.
My friend threw it in the junk bought another new Lawn Boy and told his wife that if God himself wanted to borrow the new one to loan it to him, but he is the only one who could borrow it.
Frank.
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Burnt up stihl 290 chain saw 4 months old
Follow up:
Bought the parts Joel recommended and the shop that repaired it said they used them also. I think picked the right shop, turns out they are kin to the dealer I bought the saw from and were trained and worked there for 20 plus years. They are a repair shop only.
Their opinion was the carburetor was certainly too lean. Said so after repair and testing the saw. The damage amazed them. The piston is scored badly on the exhaust side while the intake side looks great. The rings are stuck in as far down in the exhaust side groves as they will go. Have not used the saw yet just picked it up this afternoon. I know it ran good for them for I listened to them crank and run it a few seconds.
I used Stihl's web site early last Friday to contact them on this and so far have no contact back from them. Just sent them another not going away and will pursue the issue. Right now I am very willing to do commercial for the other guys.
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Burnt up stihl 290 chain saw 4 months old
If it seized because it is sucking air through a crankcase leak, you will be repairing it again.
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Burnt up stihl 290 chain saw 4 months old
Kthompson,
Glad to hear you got the Stihl running again.
Treeman is correct. Any small air leak will cause your saw to run lean, but I believe the shop guys would have been able to determine if there was a leak, because the carb adjustment would have involved several turns on the adjustment screws to compensate, which would have set off a few alarm bells with them.
Keep us posted.
Joel
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Burnt up stihl 290 chain saw 4 months old
Treeman, I will ask them. Did not think of that today.
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Burnt up stihl 290 chain saw 4 months old
I submitted complaint to Stihl on their web site on 2/7 early that morning. I sent second notice one week later on 2/14 had not heard anything. That was last Friday.
At 3:45 PM dealer called me and it was an hour later before I could return the call. He was upset it had gotten to that point (not sure all that meant) and said he had not been told by his employees of the issue.
He has a brother who is wheelchair bound for many years due to a three wheeler incident and he had taken a roll with wheel chair breaking both hips and he had been out. Made me feel bad for not having asked about brother being out but I found it hard to believe his employees did not tell him about a total equipment failure.
Dealer was willing to do what ever it would take to make me pleased from paying for the repair I had already had done to replacing the power head or buying the saw back. I upgraded from the MS 290 to the MS 391 on basically an even swap. I gave him my MS 290 with an extra chain and received the 391 with extra chain but with my having paid $155 of repair. He offered the difference to me and I declined it.
Now the difference between the MS 290 and the MS 391: either there is bigger difference between them than the specs indicate or the MS 290 had never preformed as it should. Probably ran the 391 just short an hour Saturday and even with holding back on throttle due it being brand new it out cut the 290. Also cranked much easier.
Renewed my faith in Stihl and dealer.
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Burnt up stihl 290 chain saw 4 months old
Glad you are up and running now.
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Burnt up stihl 290 chain saw 4 months old
Treeman, I did ask abut air leak and was told it would have done the same thing but normally an air leak will cause it not to idle properly which the saw basically did fine.
Did appreciate the suggestion there for I learned more on 2 cycle engines. kt
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Burnt up stihl 290 chain saw 4 months old
One other thing I discovered with my new Johsered; the EPA strikes again. They now have the manufacturers getting designing the saw to cold start at a very high rpm. It eventually idles down, but not before smoking the clutch (with the brake engaged). My whole life I viewed starting a chainsaw with the brake engaged as a safety measure. This new generation of saws changed that. The cold idle is high enough to overheat the brake clutch to the point of smoking. So I now necessarily start the saw with the brake off.
Not sure, but leads me to think that there may be a relationship between engaging the brake on a cold saw - and the cylinder damage described.
//greg//
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03-06-2014, 18:38 
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