Question about Ryobi 30 Cubic Centimeter Curved Shaft Gas Trimmer

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Ryobi 720r weedeater. Starts, stalls, won't start.

I just rebuilt the Walbro WT-340 carburetor on my Ryobi 720r. Primed it, fired in choke mode, switched to idle speed and started. It ran for about 2-3 minutes. It then stalled and would not start back up? Can't figure out what would cause this? I also put a new spark plug and new air filter. Seems like it is losing compression somewhere? Can anyone help with this problem?

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  • 124 Answers

When you rebuilt the carb did you remove and replace the welch plugs. If you did not, then that is probably where your problem is. Debris, varnish and corrosion can build up under the welch plugs and the unit will not pass fuel.

Posted on Sep 14, 2009

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Posted on Jan 02, 2017

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