Chainsaw stalls when giving it gas?

I bought a 20'' Echo CS-520 chainsaw last summer and recently I brought it out to start some outside work, it started fine and I got through some trees and refilled, thats when it started acting strange. It idles fine, but whenever I give it gas it starts to die out and full gas causes it to stall. I've checked the air filter, screen, and fuel filter and all looks ok.. I tried playing with the H/L on the carb, but still it has the problem.

Any help would be great, as this has been driving me crazy especially since its practically brand new. Thanks.

Comments

8 Responses to “Chainsaw stalls when giving it gas?”
  1. josh p says:
    July 21, 2009 at 2:35 am

    not sure how to on a echo, but sounds like u need to adjust the carb, i have a poulon that did the same thing. after playing with the carb a little she started running like a champ. also make sure u got good gas not stuff that has been sitting around since last summer.

  2. Your Holiness says:
    July 21, 2009 at 2:35 am

    re-build carb!

  3. smokey4u says:
    July 21, 2009 at 2:35 am

    water in gas maybe a clogged air filter

  4. Lawnboy & Luna says:
    July 21, 2009 at 2:35 am

    Don’t rebuild the carb, just clean the air filter. Any time you rev up and the machine falters, including your car, look to that. Chainsaws are notorious for getting plugged air filters.

    Lost the instructions on how? Take out the foam, clean in gasoline, and put some oil on the foam. Squeeze out, then replace. Good to go.

  5. jackjacoman says:
    July 21, 2009 at 2:35 am

    start by closing both needle valves gently then back them out 1.25 turns it should start and idle then adjust the s needle a bit at atime till you can acelerate. then adjust the h needle till it runs at top speed when it starts to " burble " back the h needle back slightly

  6. Ray K says:
    July 21, 2009 at 2:35 am

    Hi…….have you set the mixture screws properly?..usually fully-in (without being heavy-handed with the screwdriver) and then 1 and 1/2 turns out…..when you have the idle nice (running at max revs) without the chain spinning (if it does….back off your idle speed screw)…..then take it out 1/4 of a turn to slightly rich the mix. Then pull on your trigger (it’s best to do this with the bar and chain off) and turn the Hi idle mix. screw in or out till it has maximum speed. There must be a clean transition from idle to max power. If that doesn’t solve your problem, remove the fuel filter from your fuel tank (pushed onto the rubber hose at the end of your fuel line)…..you may need a piece of wire with a bend in it to hook the rubber hose out…..if you have an air compressor, try and blow any crud out of the filter by pushing the nozzle of your airgun down the fuel tube barb. If that doesn’t remedy the problem pull the carb apart and blow out the fuel/air galleries to ensure there isn’t any dirt in them. Draw a pic of all the linkages when you remove the carb to ensure you don’t waste hours getting it all back together…….CHEERS

  7. L-Tyrosine : says:
    October 26, 2010 at 8:13 am

    we always use air compressors in spray painting and also in blowing off those hardened dust on our home”.-

  8. Money Business says:
    January 25, 2011 at 7:34 pm

    ;~’ I am really thankful to this topic because it really gives great information ,`’


 
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