Originally Posted by
XXX-er
those ^^ are both good industrial grade Sthil saws eh
So a dirty airfilter can alter the fuel-air ratio and make the saw run badly (rich I think ?) I have never touched the Carb and the saw has always runs the same, air filters on the 261 are not expensive so I have 2, at the end of every 6 hr day I swap out the dirty airfilter, vacuum it/ wash under the tap/ dry gently on top of an idling italian espresso maker, the air filters stay clean & seem to last forever using that service method
also a good time to clean cooling fins, vacum all the sawdust from under the engine covers, sharpen chain, clean bar groove, maybe flip the bar