Take the bar off, make sure you have chain oil in the reservoir, start the saw and watch the output. Should come out in blurbs each time the oiler runs...also, make sure your bar is clean-I always run a thin metal finger file down the length of it to make sure all the crud is out, and, most importantly, clean out the little oiler hole that, if plugged, will not allow oil onto the bar and chain.
If a saw doesn't cut, its dull. I've struggled at times and finally come to realize that a very sharp round file is key, and, getting out a magnifying glass, or glasses, to check each tooth, and make sure that the top of the tooth is very even,and straight, like / If it's got pits or gashes or anything, it's in need of help. Each tooth must be totally sharp. And also make sure that you didnt miss the 'tilt' that some chains require. Most are flat, (0 degrees) but some ask for 10 degree tilt to get the gullet right.
This tool really helps me get a s traight cut, and I have a bench grinder that frankly, I don't like...Despite the fact that it's gonna give a consistent angle, the wheels are a bit rougher than a round file, that gives a very smooth edge... Make sure each tooth is held tightly when you file also...I like the tool below. Cheap, and holds nicely.
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