I always keep an old chain for those dirty jobs, I usually replace a chain before I have to, so there's always a little life left in them for emergencies.. Dirty logs are a ball ache though, good luck
There is no clean side. You cannot see bark, no where on the logs.keep the cleanest side to the foreword cutting side(front of you) while cutting! cutting from the top of the log as this will bring clean saw dust through the cut to remove any dirty material from the cut after!
Don't drag them through the dirt...
I buck em where they fall, load the truck and take em home...
Is it worth it sharpen it every 2-3 bucks? My time is something too.chain is to cheap to go to this trouble