The PB-250 will not start. It was purchased last year and used little. I have fresh gas and a new properly gaped OEM plug. I do have spark. The spark plug is wet with fuel. Can one flood the engine by pushing the fuel bulb to many times? If I dump the gas out of the tank will there still be old gas in the carb? But started it earlier this Spring to see if it would run. Then my wife tried to start the blower later in the Spring and now it won't start. Is there warranty on the wife?

SOURCE: runs for a little while the blower it is echo pb 620

these do this all the time just let it sit for 10 minutes and it should fire back up.

SOURCE: I have a Echo PB/251 Gas Blower which I recently

Check the muffler and/or spark arrestor screen in the muffler outlet pipe and also the engine's exhaust port behind the muffler. These are prone to carbon-clogging and the engine cannot "BREATHE" enough to reach full throttle. If all-clear in the muffler, go back in the carb and locate the inlet screen directly opposite of the inlet needle. Carefully pull it out with a pick and hold it up to a light source. If you cannot see thru it, replace it. This is another, (less) common area of obstruction.

Hope this helps,
Dolf-

SOURCE: brand new echo pb-251 blower, used it 3 times for

you can thank the EPA for your blower problem the EPA makes all brands of lawn equipent "tamper proof" with plugs and limit caps. not just echo......when we service an echo piece of equipment we let it "break" in and adj the carb as needed BEFORE it leaves my shop. dont hesitate to bring it back to the dealer, if they are reputable, they will do the adj while you wait......hope this helps. good luck

SOURCE: Echo leaf blower will not start....leaks fuel from

sounds like u have a carb problem,ether theres debris stuck in needle valve needle is stuck open or the check valve diaphram is bad.take carb off on one side there is a plate with 4 screws remove then agasket and diaphram remove them some times they stick to carb so use a razor blade to go underneth diaphram all around from center youll see a metal see saw with a pin going through if u push on center it will lift needle valve on other side make sure it goes all the way down or remove by removing screw that holds pin in and blow out with air lightly may blow seat out after that on other side of carb take other plate off by center screw that diaphram has 2 little flaps check valves make sure they are limber and not wrinkled or bent if so u can get new ones at good mower shop or parts supply hope this helps

Roy Cagle

• 1545 Answers
• Posted on Jul 03, 2011

SOURCE: ECHO PB-250 blower new used one time carb.needs

Your machine has a rotary-valve diaphragm type carburetor. These carburetors typically only have an adjustment for the IDLE speed with an available option to control the main jet with an adjustable mixture needle.

http://www.echo-usa.com/Products/Blowers/PB-250

Here is the info on the Zama rotary-valve diaphragm carburetor.

http://www.zamacarb.com/prodlist.html#RB

Some have a small adjustment needle in the center pivot of the rotory part, under a brass plug...but most have nothing. Many end users and techs are complaining about the non-adjustable carbs. They are made this way to meet the more stringent EPA emissions codes that are getting tougher each year.