Chainsaw chain came off/is loose
You need to tighten the chain, and or remove and reinstall the chain depending on whether or not it has come off the drive wheel. The chain drive is on the right hand side of the saw, and there are either two nuts (about 1/2 inch or 13mm) holding the chain on, or there is a little half round handle you can use to tighten the chain after it is on the drive wheel properly. The saws with the two nuts on them have a small flat blade screw on the backside on the bar that you tighten the chain with. And to make things more confusing, some of the newer bars have a round hole in them, that after you loosen the two bolts, you stick a screwdriver in the hole and turn it clockwise to tighten the bar, then you re tighten the 2 nuts.
Since from your description that it wont engage to cut, you will have to remove and reinstall the chain since it is loose from the drive wheel. Clean out all the wood chips, etc in the drive wheel area before you reinstall the chain, make sure it is not on backwards and sharpen and oil it before you use it. Rick
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