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Check the fuel/oil mix ratio you are using. Some Ryobis use a 32:1 mix and some use a 40:1 mix. There isn't much difference there. To be on the safe side, if you machine is possibly running or tuned a little "lean" I would start off with about 4 oz/gallon oil to gas mix. Use synthetic 2-stroke oil also. Your machine will perform much better.
We have a Ryobi gas weed eater. We can get it started but it doesn't stay on. I took it in to get it fixed and he said it was the primer switch, which he replaced, but we are still having the same problem. Can you help us or refer us to a Ryobi repair store? We live in Phoenix, Arizona but can go to any repair store in Glendale, Tempe, Phoenix, Mesa, Scottsdale, wherever in Arizona. Thank you. Sally
It's the muffler. Everyone thinks fuel, carburetor, mixture. They're
wrong. The muffler is clogged and the unit can't be tuned to high
throttle until you clean it.
Steps: Remove the back housing to access
the muffler. You may want to remove the gas tank to avoid a spill.
Remove the muffler (2 large screws). Remove the muffler door (3 small
screws). The screen should be cleaned using a pin (poke out any
hardened material). Most important: The muffler door is 2 parts. Pry it
apart and scrape off the burnt carbon that is clogging the exhaust
path. Re-assemble and start.
I don't mean to over simplify this, but are you using fresh gas? Gas string trimmers are extremely ticky when it comes to gas. They like it SUPER fresh. And while the gas and oil mixture should be right, it can be off a little bit and still run. Try draining all of the gas out, and then filling up with fresh mix. This is ALWAYS my first step with string trimmers, and it fixes the problem 75% of the time.
Hope this helps!!