Recently acquired a Ryobi 2 cycle gas blower that previous owner couldn't start. Changed fuel lines, fuel filter, primer bulb, spark plug and cleaned Wyc-8 Carburetor(Walbro). Started and ran strong first or second pull after reassembly. Ran for 10 minutes total, at idle and WOT, then shut it off. Came back 20 minutes later, starts, idles for 4 or 5 seconds then speeds up and dies. Opening throttle only speeds up process. I've cleaned the carb 4 times. Changed fuel lines twice. A little dirty looking inside engine(looking through spark plug hole). I'm stumped.

Jim Parker

• 1041 Answers
• Posted on Jun 21, 2009

SOURCE: started stalling after last usage. then it would not start

When cleaning the carburetor make sure the small screen is free of debris. (Should be able to see daylight through it.) Use a Den Tek Brush, (http://www.drugstore.com/products/prod.asp?pid=165357&catid=1152), to clean the small portals in carb. These portals can become blocked and will keep the mower from running. Reassemble and start. Good luck!!

If you need further assistance, just let me know.

Jim

SOURCE: Troy-Bilt Hand-Held Blower dies when warm and throttle wide open

You reported that most of the items I would've suggested, you have checked...
Good job.
A couple more things:

• Replace fuel filter, it's in the gas tank
• Check and clean the Spark Arrestor screen at muffler, when they plug up, it's a major restriction to exhaust gas flow
• And check and adjust High/Low screws at carburetor, video attached.
• And clean or install rebuild kit for carburetor

SOURCE: Trimmer won't prime to start

Look inside the tank. Some units have a stone inside that blocks the fuel line when it is tipped a certain way. Might be what's happening here.