What next for this string trimer

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  #1  
Old 06-03-16, 04:46 PM
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What next for this string trimer

Hi guys,

I have a Sthil fs45 string trimmer with a Zama carb.
Stopped running and won't restart. I don't know the engine type and can't find a engine model number. First thing I did was to spray starter fluid in the carb and it does run off that. So I have a fuel problem I am thinking. So I remove the fuel filter and try to start - no luck, then I remove the carb and clean out with carb cleaner and air I also installed a carb rebuild kit. Still won't run.
I am thinking my next step is a new carb. Anything I should try before that? And if the new carb doesn't work what next?
 
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  #2  
Old 06-03-16, 06:06 PM
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You may wind up with a new carb, but first check the primer. Does the bulb fill with gas and does it send gas back to the tank. While working the primer, look down the throat of the carb and see if gas is being squirted into the throat. Let us know.
 
  #3  
Old 06-03-16, 08:09 PM
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Hopefully you don't see any gas being squirted in the throat, if you do something is wrong. That's not what the primer does.
 
  #4  
Old 06-04-16, 04:11 AM
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New Carburetors don't solve all fuel issues; I once had a Trimmer with similar issues (a Poulan) and it was a leak surrounding the Crankcase that allowed too much air in, and altering the air/fuel ratio while it was running. You might have a leak in that area.
 
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