May be one of several issues ... my Stihl 009 was originally purchased after Hurricane Fran in 1996. It has run well ... but been used only sporadically in the last 22 years. It now runs well, but the chain seems to get no oil even though there is plenty of chain oil in the saw. I opened up the saw and cleaned out all I could ... interestingly, I forgot to replace the screws on the inside where the oil went in ... and as I was picking it up ... oil was leaking out. So I put the screws back in ... put it back together ... and the oil leak stopped. But as I try to use the saw ... the chain seems to get no oil and I might as well be cutting w/a butter knife. Any thoughts on why the oil would stop feeding to the chain?