Echo Carb SRM261T versus PB650

Discussion in 'Mechanic and Repair' started by ed2hess, Jul 6, 2006.

  1. ed2hess

    ed2hess LawnSite Fanatic
    Posts: 13,327

    Is the carb on these two units basically the same. I want to take a new carb off a trimmer and put it on an old PB650 to confirm that carb will fix the problem. I have cleaned the ports, new carb kit, new fuel filter and new head gasket and new spark plug. When I accelerate the unit it bogs. If I squirt carb cleaner into the carb slowly it takes off and runs as long as I squirt.
     
  2. ed2hess

    ed2hess LawnSite Fanatic
    Posts: 13,327

    From a mechanical standpoint they seem alike but it looks like the jet may be different....probably bigger diameter hole on the blower.
     
  3. lawnmaniac883

    lawnmaniac883 LawnSite Silver Member
    Posts: 2,613

    Just take the air filter off of the carb you suspect is bad and once you get the engine running, put a gassy rag next to / over the carb opening and as you increase the throttle, hold the rag closer. The vapors from the rag act like a crude carburetor but will run the engine just fine if carb is the problem. Taking new carbs off of new trimmers to fit onto an old blower just for a check is a waste of time. Rag works every time.
     
  4. ed2hess

    ed2hess LawnSite Fanatic
    Posts: 13,327

    Thanks for that tip......the problem turned out to be a spec of dirt in the tiny jet valve. I failed to pull it out and run fine wire through it when I rebuilt the carb. I thought I sprayed carb cleaner through it put obviously didn't. Put it back together and it is running fine.
     
  5. lawnmaniac883

    lawnmaniac883 LawnSite Silver Member
    Posts: 2,613

    Good job. Dont ya love it when you fix stuff yourself.
     

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