Ok, I may have gotten ripped off on Craigslist ... surprise surprise I bought a used Stihl MS310 for $200. Met the guy at a parking lot in town to make schedule work, reduce driving et. Stihl saws don't last long on CL so I wanted to jump on it. It started up great, then I aimed it at a patch of snow to check the oiler - no oil So I said something to the guy and he says maybe it's empty. Now when I run a chainsaw, if there's gas in it, there's oil in it - no question. You never fill one tank without filling the other. But a quick look in the tank confirms it's bone dry despite > 1/2 tank of gas. So ... I bought it anyway, hoping it's probably just empty and $200 is a good deal for what looks to be a relatively new & lightly used saw. Bring it home, add oil, aim the bar at a log ... still nothing significant. Occasional spatters of really black stuff, not the spray of fresh oil I'm used to seeing from my POS HD Poulan. My guess is the seller new the oiler wasn't working, so he drained the tank. No oil? "Oops, must be empty - sorry". The guy was on his way to his job selling cars - considering what I know of car salesmen, it wouldn't surprise me So - any suggestions where to start? I'll be taking a look at the manual tonight.