550xp stalls after 20 seconds idling

[lukeduke]

First generation (2014) really love the saw. After a week of use it would quit after idling for 20 seconds or so. Dealer put a new carb on it and has worked good until recently. Now doing the same thing 6 yrs later. Does it need another new carb? Works great when when in use. Has never seen any low grade gas.

 

[mountainlake]

If it idles slower and slower turn the low adjuster in a little and see if that helps. Steve

 

[Big_Eddy]

Needs to be connected to CST and checked. Could be an air leak, low compression, plugged filter, cracked fuel line or some kind of gummed up in the carb.

Don’t keep running it. I did mine and it cost me a new piston and cylinder.


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[lukeduke]

Needs to be connected to CST and checked. Could be an air leak, low compression, plugged filter, cracked fuel line or some kind of gummed up in the carb.

Don’t keep running it. I did mine and it cost me a new piston and cylinder.


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yeah, I should have it checked out, it's been 6 years since it's been looked at.

 

[mountainlake]

If it's slowing down and stopping you have too much fuel and wont burn up, if it's speeding up and stopping then check for the things listed above. Steve

 

[lukeduke]

If it's slowing down and stopping you have too much fuel and wont burn up, if it's speeding up and stopping then check for the things listed above. Steve

yes, slowing down and then quits, I see what you mean, too much air and it would speed up, doesn't do that. I'll get a new filter and try it first.

 

[SimonHS]

The colour and condition of the spark plug might tell a story.

 

[mountainlake]

yes, slowing down and then quits, I see what you mean, too much air and it would speed up, doesn't do that. I'll get a new filter and try it first.

Dont be afraid to try turning the low in some, it's not going to hurt anything and you can always put it back if no help. A clogged filter sure could cause that. Steve

 

[Andyshine77]

It needs to set itself, run it in the wood for at least a minute.

 

[Wood Doctor]

Don't be afraid to try turning the low in some, it's not going to hurt anything and you can always put it back if no help. A clogged filter sure could cause that. Steve

My Stihl MS361 that was doing the same thing -- running rich at low speed, which seemed like the engine was drowning and that conked it out after about a half minute. I did exactly what you said here, and that worked for me. The idle speed went up slightly but not enough to cause chain creep.

 

[cscltd]

You can do a soft reset of auto-tune system by cutting a length of wood about 5ft long by cutting about 2-3 inch deep with bottom of nose the length of wood running it at full throttle with sharp chain.

 

[lukeduke]

I cleaned the air filter but it was the reset that did it. I kind of forgot about that. Working great now. Thanks everyone for the feedback.