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make sure your fuel is fresh and mix at 50:1
then remove the muffler and try to start it holding the throttle wide open... if it starts and runs fair suspect a flooded engine, plugged muffler
if not, suspect a carb adjustment issue and then a carb
If your fuel filter is clean, and none of the fuel lines are pinched, then you probably need to replace the diaphragms, gaskets, and screen in the carb. Some carbs with the primer bulbs mounted on the carb have a check valve in the primer system. This is the least likely problem, but it is possible that the check valve is defective.
Even though you have cleaned the carb., I am going to instruct you to do the same thing. I have a couple of Tips that makes all the difference in the world!
Maybe a quick fix and maybe not
check your muffler the factory puts a spark arrestor screen that tends to plug after awhile
there is a little plate on the side muffler that needs to be removed to access the screen you may need a torx bit or allen wrench to remove
you may have to remove the back half of the plastic cover to access the screws
remove screen and clean with carb. cleaner or equivalent make sure you can see through it and reverse the procedure to put it back
Hi
I have had the similar problem & spent a day stripping the unit down
(dismantled & re-assembled the carb, seemed OK fuel reaching & flooding the plug) I unscrewed the spark plug from the body, but left it connected to the lead and found that there was intermittent spark when pulling the cord. and tested it with a continuity meter - no signal/measurement. bought a new spark plug, meter reading showed signal/measurement, now starts every time. It may be that Ryobi has been installing rather cheap nasty plugs. So test the plug first by watching the spark when pulling cord, test with a meter, if no continuity, buy new plug....
Check also that little gauze air filter behind the roto choke is not blocked.
this solved it for me.
Hi
You may have tried this already, Apologies if you have.
I have had the same problem & spent a day stripping the unit down
(dismantled & re-assembled the carb, seemed OK fuel reaching & flooding the plug) I unscrewed the spark plug from the body, but left it connected to the lead and found that there was intermittent spark when pulling the cord. and tested it with a continuity meter - no signal/measurement. bought a new spark plug, meter reading showed signal/measurement, now starts every time. It may be that Ryobi has been installing rather cheap nasty plugs. So test the plug first by watching the spark when pulling cord, test with a meter, if no continuity, buy new plug....this solved it for me
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