Carb screws adjustment question.

[John Rainford]

I just fixed a running  issue with my Stihl ms/211, adjusting the metering lever down a little which sorted out a rich fuel situation. The saw then bogged on start up when taken off the choke and when pulling the trigger to increase the revs. I figured there was now not quite enough fuel being delivered so after some fine fettling ended up with the L screw turned  out an extra half turn from it's factory setting position and the H screw out an extra quarter turn. This has solved the bogging issue on start up and on acceleration. Could someone please confirm my thoughts that this will not cause any problem for the cylinder, piston, piston rings, or put me right on this. Thanks.

[spudulike]

Turning the screws out further will richen the fuel delivery and, on the H screw, will drop the high speed revs a bit so, no, the adjustment will not damage the engine.

You may like to look at the plug colour after an hour or two, it should be a tan colour on the end electrode.

[John Rainford]

Thanks once again for the information Spudulike. My mind is now at rest and my saw cutting logs again.