Make sure to check Case/Bar Nut: Husqvarna Chainsaw issue

Nut came loose not long after cutting with brand new 450 rancher. So please always check these nuts on any new chainsaw as a rule of thumb. Some items also noted. The chain tensioner screw should be steel and not plastic. Also the oil and gas caps DO NOT come with it which is odd?? At least not the ones at Lowes. You will have to buy them separately so don't forget to pick them up while you are at the store or you will have to go right back out to get them. As for the case/bar nut could add some kind of lock washer with the nut. Noted advice from Damon's comment that nylon lock is not practical.