Did this problem just start ? Did it work fine before ?
the chain saw was used 4x light use. I then used it heavy (5hrs + ) in two days and the problem started. 2 hrs into the second day. Th bar would come loose after 10 min off use and I would have to manualy hold the bar to get the chain tighter.
Ok i think that Delsley Jr gave you good advise,,i have came acroos these poulan saws beforw were it has a dial to adjust the bar,a half turn can move it alot,,the only reason that it would come loose is because it is not locked into the bar,,make sure when you snug it up(with the dial) and before you tighten the bolts you lift up on the end of the bar to check for proper chain tention,,make sure you adjust the chain when you are lifting up on the end of the bar,,make sure you are locked in with the adjuster and you have the right amount of tention on the chain before you tighten the bolt. These saws were knowen to be a bit of a lemon,,however they should keep proper tention on the chain as long as it is assembled propery and there is nothing stripped or worn out.