Help: starting Stihl MS290

[DrewUth]

From what I have read, it seems that you had it running well enough to cut a fairly large tree, but that it leaned out a bit when it got hot, which is to be expected. I think the saw is a bit lean on top- so back out the H screw on the carb a hair and see if that makes the issue better or worse. For proprerHigh side fine tuning, the saw should be under a load and wide open, however you can make small adjustments at idle and then test it in some wood.

 

[AKDoug]

I honestly think you just flooded it. My sure fire way to "unflood" a flooded saw is to use two people. Have one guy hold the saw and hold the throttle at full throttle. The other guy pulls the pull rope. DO NOT PUT IT ON CHOKE..just run position. About 10 pulls should get it to pop a couple more should get it to run.

 

[kr5258]

What do you mean "killed it?" I pulled the outer part of the muffler and I did find a screen. It was mostly open but there was some dark red material in there. I took the rest of the muffler off to where I could see the piston. I could see that there is dark red gasket goop; I guess that means somebody has been into this engine before. Actually, the seller claimed he made the saw "ready for sale," so, maybe he did it. I could see the piston and what is that where the muffler fits, the manifold? Should there be a gasket between the muffler and the manifold? There is no gasket.

Also, how do I know if the muffler is okay? I saw something about a muffler mod to make a saw run better (after warranty)... I guess I need to look into that? Thanks for help, I'm a guitar player, not a chainsaw expert, lol

When you say "fresh kit,"... do I, literally, but a kit of parts to install into the existing carb? What about just buying a whole new carburetor? Here is an aftermarket carb for $16 -- http://www.amazon.com/Chainsaws-Chain-STIHL-Carburetor-Engine/dp/B006RCZC8K/ref=pd_sim_86_7?ie=UTF8&dpID=51caCBkeSmL&dpSrc=sims&preST=_AC_UL160_SR160,160_&refRID=0CXQK0EGW8W3S74XR2QW

See my response in post #14. Walbro carb kit K10-HD