Flooding problem with Stihl 250

We've run into a problem with our new 250. When we turned it sideways to cut, the carburetor floods. My husband was cutting a stump down with it, and it kept flooding. My husband was able to unflood it a few times, but then his shoulder said no more. I finished the job with the 180, no problem. Is this a defect with our particular saw? Operator error?
It was all warmed up when it happened, we had been cutting rounds, and trimming the stump was the last thing to do.

 

I have not had that problem with my MS 250. I am following this topic.


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Midwinter

One of my saws was doing that once. It ended up being the beginning of some fuel line deterioration. Even with treated and stabilized fuel, they do eventually wear out. If that ends up being it, also a good time for a fuel filter.

If my memory serves the total cost for lines, filter, and labor was under $15. But, that was a few years ago and not a MS250.

I hope it is a low $$ fix for you!

 

We bought it new a couple of months ago, and have only run ethanol-free fuel in it.

 

If that saw is that new it must still be under warranty. I would take it back and have them fix it.

 

Midwinter

So, maybe it is just an adjustment needed and / or warranty item for your dealer.

Hope so anyway.

 

OK, I'm going to run it up to the dealer. My husband said it didn't flood instantly upon being turned sideways, it would take about 30 seconds at full throttle before it stalled out.

 

Yes, this is a warranty issue. Make sure they cut parallel to the ground long enough to witness the issue.

 

I left it there, they said middle of next week. I told them about the 30 seconds.

 

I have a 4-6 month old 250 and my father has my 20 year old 250. I have had no issues at all. Run for the warranty repair!!!

 

Or the diddle stick needs recalibrated...

I'm sure the dealer will fix things right up Midwinter !

 

A few weeks after I first got my MS250 in 2018 it would run out of gas in a couple of positions with about half a tank of gas in it. I was about to take it to the dealer, but I looked in the gas tank and the line and filter were kinda wedged into a corner of the tank. I took a screwdriver and wiggled it around in the tank and it has never done it again. Mine wasn't flooding, but it was starving for gas. It was stihl the same end result though, stalled saw with gas in the tank.

 

What makes you think it's flooding? The reason I ask is that it sounds like it's leaning out and dying, maybe sucking air? If it's flooding, is fuel running out of the carb? Does it smell like raw fuel? Sometimes a raw fuel smell makes people think it's flooding when it's actually leaning out. If it leans out to the point it dies, you can get the smell of an air/fuel mixture that's just too lean to burn.

 

I have two of them. No problems in years but one did what you described and the fuel hose had become dislodged and was sucking air when the tank got below 1/2 tank and laid sideways.



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I think it's flooding because that's what my husband said it was doing!
He was able to unflood it by pulling the pullcord with the saw in the off position, I think. After having to do this a couple of times, his shoulder was done.

 

After it died the first time, we thought it was out of gas, but it had about half a tank. We filled it up, since we had it open, went back to cutting, and it died again.

 

It certainly could be as simple as the fuel line and filter sitting in the wrong position.

 

missed that. That would suggest it’s something else. Good luck.

 

Pulling the cord with the saw in the off position WILL flood it. The off position only kills spark but the action of the piston will still pull air thru the carb which pulls fuel thru the carb. It may have leaned out and died and pulling the cord with it in the off position may have primed the fuel starved engine. Just my 2 cents