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- posted September 1, 2012 in Husqvarna: Ask & Answer > Chainsaws
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I have had exactly the same problem with my 445, to the letter. I am cutting green oak and the bar sprocket seizes up. I have had the saw for less than a week and it has seized three times now. I keep my saw sharp. What I am seeing is that the sprocket is getting gummed up by the sawdust which seems to work it's way into the open lubrication holes as well. When it seizes, I end up having to stop and clean the entire bar until I can get the sprocket freed up. It is clearly not a problem caused by damage to the bar as it would not be corrected by cleaning and relubricating after which it works just fine for a while.
I haven't had this problem with my stihl saw which has no lubrication holes on the bar. My guess is that the solution is going to be that of having to buy a different brand of bar and chain for my NEW Husqvarna saw. Sometimes, things have design flaws. Good luck.