Echo Carburetor Tuning

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  #1  
Old 06-28-12, 07:37 PM
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Echo Carburetor Tuning

  • I have a GT 200 trimmer that refuses to run at full throttle. Top RPM is achieved at just over half throttle. Using full throttle results in a stumble that causes a stall. The PB 200 of slightly newer vintage runs rough and refuses to hold top RPM, instead swaying up and down when held at full throttle. I've messed with the screws, but not the stops. New plugs, air, and fuel filter on both. Just cleaned the spark screen on the PB 200 with no effect. Any suggestions?

Thanks,
Cole
 
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  #2  
Old 06-28-12, 08:35 PM
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Sounds like a carb cleaning is in order for both.
 
  #3  
Old 06-29-12, 02:51 AM
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Pull them off, strip them down, and soak them?
 
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Old 06-29-12, 03:47 AM
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Yep, then blow'em out with compressed air.
 
  #5  
Old 06-29-12, 09:52 AM
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I would use spray carb cleaner rather than soaking them. Soaks can ruin rubber parts and some carbs have rubber check valves that can't be easily removed.
 
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