Chain seems loose. When I take off the cover and put the chain around the gears in the back, then put nuts back on and tighten the cover and start it, it pops off again. How do I fix this problem?

Claire Meyer, September 2008

There should be a tensioning wheel that takes up the slack. On my cheap, electric chainsaw it pokes through a cutout in the cover - runs vertically. With the machine unplugged and the cover off it is very easy to adjust - when the cover is screwed on it beccones a little more difficult to move.
My handbook says adjust for 3mm play in the chain. What does your handbook say?

Richard Buxton, September 2008