I've Never done this, I have a echo 210 and it runs a little ruff. When I start it.. it bogs down, it takes at least three times of starting it to get it to stay running. Unless I just flore the gas on the second or third time it trys to start after pulling it 15+ times. Then after a few minutes of running high rpms it fine. When you clean the air filter what do you guys do? Use water, blow it out or just replace it. It's only been threw one season. Any tips on cleaning the Carb?