MS290 will not start

dallypost

Hi all,

This is my first post here and I sure hope that you can help me.

I have a two year old Stihl MS290. It has had light use, cutting firewood and a little fencing around the ranch. Recently, while cutting up a log, I noticed that it did not have a lot of power. I only had a few cuts to make so I did those and shut the saw down. A short time later, the saw was still warm, I dumped the fuel and added fresh. The saw would start, idle for a few seconds and die. I brought it home and it has never run since. In fact it doesn't even try, no pops or sputters at all.

I have cleaned the air filter, checked the spark arrester screen and found it to be clear, replaced the fuel filter and the spark plug and replaced the fuel. None of this has helped. Is there something simple that I can try before attempting to rebuild the carb or paying the dealer to do it?

By the way, how difficult is it ti rebuild a carb on these things?

Eric Frei

Is there spark?

Did you try a new plug?

Check fuel line for tiny holes etc.

With the loss of power was it running rich or lean?

All else fails go back to Stihl dealer, they can vacuum test for leaks.

__________________

Bruce Hopf

It could be a number of things. It could be a faulty ignition, and the spark, could be weak, or none at all. Check that first.
One thing you can try, remove the air filter, and put a bit of gas/oil mix, into the carburetor, and see if it will offer.
If it dose, try to start, or start, try to keep it running, by using the choke, if it starts to die again.
Another thing to look for, is there a crack in the intake boot, or a loose clamp, on the intake boot. A cracked impulse line, could effect the running of the chain saw as well.
For the carburetor rebuild, here is a link, to a post that I started a while back, about carburetor repairs, made simple. Carburetor repair made simple
Give that a try, and hope you can get it running. Bruce.

__________________
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