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Echo trimmer---what have i forgot.

Discussion in 'Mechanic and Repair' started by themow, Jul 24, 2008.

  1. themow

    themow LawnSite Member
    Messages: 41

    I have an old echo gt-2200 string trimmer that is not running right. It starts and idles fine but when squeeze the throttle, its hesitant to rev up and at wot its kind of boggy.
    I removed the spark arrester and cleaned the exhaust port, even tried running it with no muffler, still no change
    I put a new spark plug in, still nothing
    I took the carb apart and cleaned every hole with carb cleaner
    I tried choking while it was running to see if there was a lean condition but it didnt help.
    I hit the primer bulb while it was running, it bogged
    I took the fuel filter off and ran it without it for a minute, still nothing.
    There is only one adjustment screw on the carb. Its a walbro wy series. setting it to one click leaner, kinda clears it up a little but but still not right.
    Im thinking maybe i need to rebuild the carb with some new gaskets but who knows.
  2. Phil G

    Phil G LawnSite Senior Member
    Messages: 844

    Hi, can you get another carb' off another machine (even borrow one) It's tempting to say buy a new carb', but they can be expensive. It might be an air leak or crankshaft seals. My money's on the carb, good luck[ Phil :)/COLOR]
  3. punt66

    punt66 LawnSite Fanatic
    Messages: 8,536

    With todays bad fuel you can bet its the carb. I replaced 2 carbs this year and on was on my power broom that i bought last year and only used like 10 times.
  4. themow

    themow LawnSite Member
    Messages: 41

    the carb itself goes bad????

    What about the gasket set or even yet the repair kit that has new jets and seat and stuff?
  5. punt66

    punt66 LawnSite Fanatic
    Messages: 8,536

    the problem is usually in the small passages getting clogged from the crappy fuel breaking down. Its been my experiance that its a 50/50 shot in fixing it. So if i cant spray it clean i replace it and wont bother spending money on a gasket kit.
  6. Phil G

    Phil G LawnSite Senior Member
    Messages: 844

    The trouble with these small carbs is they have airways and drilling so small that even ultra-sonic cleaning will not always unblock them.
  7. themow

    themow LawnSite Member
    Messages: 41

    ok im going to go clean the carb again right now. more carb cleaner and compressed air. I will update in an hour
  8. razor1

    razor1 LawnSite Bronze Member
    Messages: 1,985

  9. Breezmeister

    Breezmeister LawnSite Bronze Member
    Male, from South Jersey
    Messages: 1,739

    It's not often I will say this, but it seems like you have covered everything
    I would have check, and it's time for a new carb. Here is a link to the Walbro site and a service manual and trouble shooting. Please keep us posted on your progress. Good Luck

  10. themow

    themow LawnSite Member
    Messages: 41

    i cleaned the damn thing and blew it out again with compressed air and still the same. It seemed the needle wasnt lifting up enough so i took it apart again and tried to make a minor adjustment to it but still nothing. It smokes at full throttle.....

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