I have an Echo PAS-265 has been a great unit, I've had it a little over 9 years. I used it last Sunday, used it for about 4 hours or so. Ran great, no problems. Tuesday I go home and the wife said it is acting funny. I take a look, it starts right up, but won't rev up. I take a look and the air cleaner is dirty, even removed though, it still won't really rev. I get online and order new fuel lines, primer/purge bulb, and new air cleaner (after market for all). Change it all out (the grommet for won't fit, so have to reuse the original, so will purchase OEM from now on), I notice the fuel filter is gone. Looks like it broke off in the tank, but can't see it even after tipping and draining the tank. Put it all back together same issues. Take the carb off and clean it without disassembling it. Put it back together, same issue. At this point, I figure something got in the carb from the fuel filter breaking off. I start looking online, I found a Zama carb for it on eBay - which is the manufacturer that made the one that is on it for $17.99. Decide for $18 it isn't worth messing with trying to clean the old one. It is supposed to be here later this week. Hopefully that fixes it.