I have a bx2350 with about 1,000 hours on it. It's been a great little machine and has really given me no issues in over 800 hours (I bought it at just under 400). Earlier this summer while mowing it would lose power after mowing for about 30 minutes to an hour. I replaced the filters, which were a year old. They looked good. I get my fuel from a gas station a block up the street. They go through quite a bit of fuel. Still I started adding algae cleaner. Mowed the next few times (takes about 2 1/2 hours to mow) no issues. It's done it twice since. Each time, if I shut it off for 30 seconds, it is good to go. The last time I removed the fuel cap while running to see if a vacuum or vent issue, nothing....SO, My thought is either something in the tank or pump. Thought?