Leaf Blowers

I have a Husqvarna 125B blower. The maintenance instructions recommend replacing the fuel filter, but when I've looked at the parts diagram there isn't a fuel filter listed. Is there a part number I can find so I can get the correct filter? Does it even have a fuel filter? I don't want to start digging into it if what I'm looking to replace doesn't exist.
Thanks

I have a 125B. It has performed well for about a year. However recently it will only run for about 15 minutes and then will stop. It cannot be restarted. After about a 15 minute cool down period, it will restart and run for about another 15 minutes. What do I need to do to correct this problem?

I ordered a Husqvarna 125 BVx leaf blower on October 9th from Northern Tool & Equipment in Minnetonka, Minnesota. It was a special order because they didn't have it in stock. The order number was 32327650.
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I picked up the blower from Northern Tool & Equipment on October 19th. I used it for the first time on October 23rd. I mixed the oil that came with the blower with 92 octane gas in a brand new one gallon gasoline can. I pumped 1/2 gallon into the can from the pump, added the oil, and shook the can. I then added another 1/2 gallon of gasoline and shook the can again.
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I filled the gas tank of the blower and it started up with no problem. I did notice that the blower temporarily stalled if I squeezed the trigger real hard, but otherwise it ran just fine.
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I used the blower for the second time on October 29th. After using it for approximately 1/2 hour, the blower quit running. I started it up, it ran for a few minutes, and then died.
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I took the blower to Northern Tool & Equipment where they tried to adjust the carburetor, but they had trouble starting it at all. I left it off for service.
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On November 4th, I talked to a manager at Northern Tool & Equipment because they hadn't been able to fix it. He offered to order another 125 BVx which I agreed to. I'm waiting for the new blower to arrive.
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On your web site, I see other owners have had the same problem. One cause has been oxygenated gas. I got my gas from the same pump cars used so I assume it's oxygenated. The owner's manual doesn't say anything about using non-oxygenated gas.
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When I get my new blower, should I replace the fuel with non-oxygenated gas? If so, can I buy this at a regular gas station? The blower was originally shipped from your factory in North Carolina which has a warmer climate than Minnesota at this time of year. Could the factory adjustment for the carburetor be wrong for use in Minnesota?
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It doesn't seem right that a brand new blower would suddenly quit running. If I have problems with the second blower, I plan to take it back and get a refund.
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What can I do to help insure I don't have problems with the second blower?

I bought a 125B blower from Lowes a couple weeks ago. Upon starting it for the fist time last week I found it is not running correctly. It will start fine on full choke, and when I put it on half choke to warm up it is fine. However, when I turn off the choke, it does not run well. It wants to die as if the idle needs adjusted. I my fuel mixture is fine, because I use it for my trimmer with no problem. Any suggestions?