Question about Echo Inc. 44 CC, Carb Certified Backpack Blower

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I have an Echo PB 403 T that idles just fine, but it will not accelerate to full speed. When pressing the throttle towards full, it stalls. I have checked the muffler; it is clean. the air filter is clean. any ideas as too what to check next? any help would be appreciated. \r\n Thanks

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6 Suggested Answers

6ya6ya
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Posted on Jan 02, 2017

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SOURCE: Echo Blower dies out when full throttle

Find the fuel air mixture screw located by the carb and turn it so the moter starts to slow down then turn it so the blower runs smoothly this should keep it from dying out

Posted on Nov 23, 2008

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slohry
  • 87 Answers

SOURCE: echo blower motor will not rev.full throttle--only about half

Check the insulator block and associated gaskets behind the carb. Sometimes the insulator block crack and reduce the amount of vacuum to the pulse diaphragm.

Posted on Apr 10, 2009

  • 31 Answers

SOURCE: I have an echo pb 265l leaf blower. It starts

If its a two cycle engine it sounds like its loading up on fuel.. Need to lean out the fuel on the carb. Not much or it will be to lean an stick the piston..

Posted on Sep 23, 2009

petersfan761
  • 92 Answers

SOURCE: engine stalls after acceleration

Sounds like its not "un-choking" it self, that its running like its still choked like you wold at initial start up.

Disassemble it and see if u can pysically see the activation and deactivation of the choke when u apply them.

While u are at it, also make sure:

Gas is fresh?

MIx is right?

Plug is good?

Chain brake mechanism is released.?

Good luck.

Posted on Oct 05, 2009

dontbother10
  • 2220 Answers

SOURCE: My echo cs440 all of a sudden stopped running at

That is where I would go. Maybe carb clean or kit if it is a sudden change.
Carburetor Adjustment by Madsens.com
http://www.madsens1.com/saw%20carb%20tune.htm
CW is leaner; to lean will destroy the saw. If over tightened closed (CW) the adjustment screw faces are easily marred; marred adjustments are difficult to impossible to set properly.
Clean the air filter; adjusting with a dirty filter can cause a run lean condition once cleaned and the saw run.

There are 2 wav (sound - idle & full – may not be highlighted) files that I find most helpful, I think you will too.

If you have more questions or need additional help please reply below and I will get back to you. Thank you for using FixYa and Good Luck. HTH
Lou

Posted on Mar 01, 2010

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Engine stalls after acceleration - Start fine, idles fine, but won't run at full speed. Engine dies when throttle is engaged more than half-way. Fuel filter is ok, air filter has been cleaned.


Sounds like its not "un-choking" it self, that its running like its still choked like you wold at initial start up.

Disassemble it and see if u can pysically see the activation and deactivation of the choke when u apply them.

While u are at it, also make sure:

Gas is fresh?

MIx is right?

Plug is good?

Chain brake mechanism is released.?

Good luck.

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