Help with Stihl FS80R primer bulb wonít fill with new carb

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Old 09-19-19, 03:25 PM
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Help with Stihl FS80R primer bulb wonít fill with new carb

Iíve been trying to get my old FS80r trimmer running, I bought a new carb, fuel lines, grommets, and filters for it. Just installed everything and the bulb wonít fill with fuel. When I pulled off the line connecting to the fuel intake on the carb there was fuel in it. The dealer gave me two different sized lines just incase. The first one I tried was a little bigger and I BARELY got it on the filter and through the grommets. I couldnít get the grommets into the tank so I switched to the slightly smaller line. Still very tight on filter, grommets, and carb. But the bulb wonít fill with fuel, Iím beyond confused because itís a brand new carb from the dealer. So any insight or help would be greatly appreciated
 
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Old 09-19-19, 05:57 PM
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Tip the unit so that gas is in contact with the return line too. See if it fills up while pumping. If so, you either have the lines connected backwards or the check valves for the primer aren't working properly.
 
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