Packfan
New Member
I just bought a new Stihl 390 and had the dealer put an 18in bar on it. I was able to determine by going on Stihl's website that the chain was a RSC3. I went back and talked to the dealer about the angles to use to sharpen the chain, well they use a Stihl USG that has a different adjustment then the Oregon 511A that I have. Would 30deg top plate angle and 60 degree side plate sound right with the vise angle at 90 deg? With the Oregon sharpener you can tilt the vise 10 degrees both ways so that confused me alittle.