Take it out of the muffler and put in a vise. heat it up with a butane torch get it cherry red. take a wire brush and brush off the carbon build up. should just fall off.
SOURCE: I have a Echo PB 2601 made a loud bang then stoped working.
Sounds like it has seized up. If the pull cord won't pull then the motor is locked up. Did you run gas/oil mix for the fuel its a 2 cycle motor...
SOURCE: ho spark on a pb 403t backpack blower
Be sure you have no spark ( 90% of the units that come into my shop for repair with the complaint of no spark- have a fuel issue). Be sure the spark plug is good.
If no spark then remove the ground wire from the module and check for spark again. You must use the recoil starter- spinning by hand is not sufficient. If still no spark then replace module. If there is spark with the ground wire disconnected then there is a problem with the kill switch or a bad wire.
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.
SOURCE: What is the fuel/oil mixture
Sometimes, the fuel ratio is stamped on the fuel cap. Your ratio is 50:1. Echo specifies using 89 (mid-grade ) octane Here is a chart that tells you how much oil you need in a gallon of gas...Just 1/2 it for a half-gallon mix. A copy of your manual is also here.
http://support.mtdproducts.com/app/answers/detail/a_id/347/~/two-cycle-engine-fuel%3Aoil-mixture-chart
http://www.echo-usa.com/getattachment/624aee9f-103c-416c-ae9b-55fb42dd94af/PB250es1112_010410_1.pdf
SOURCE: Can't get my Echo PB251 Blower to rev up at all,
guarantee exhaust is clogged maybe not muffler but exhaust port pull muffler off check screen and muffler then look into exhaust port usually rectangular port is closed down with carbon pull starter slowly to lower piston then scrape out carbon with screwdriver clean as good as possible then blow cylinder out make sure to get all pieces of carbon out reassemble should run fine
1,248 views
Usually answered in minutes!
×