Ryobi Blower Engine Trouble

[Woody71]

When it won't idle or won't throttle up the "L" Low Side needs to be enriched. (counter-clockwise). When it throttles up like it should leave it alone. When you give it 1/2 to 3/4 throttle to cut and it bogs down, turn the "H" High Side either way until you hit the maximum RPM! The High side controls the high speed operation. These recommendations from the mfg to bottom the screws then turn ccw so many turns and a half etc. is only a general adjustmet to get it to run. You will have to tweak it from there to make it run efficiently.

Thanks for the tips Dave. It runs much better. I used it on Sat and it idled great. It drops down when I pull the trigger before going to full throttle. How can I tweak the H/L screws to get rid of this "drop"? L screw 1/8 counter clockwise?

 

[Koala]

Hello every one I have a ryobi back pack blower RY08570. I have replaced the spark plug, replaced the gas with a premixed 50:1 fuel to oil ratio, cleaned the carburetor, removed the muffler and spark arrestor. It does not appear that the exhaust port is dirty or obstructed nor did it appear as though the carburetor was dirty. When I run it without the muffler, spark arrestor or filter on I appear to have the same problem that I had before. It is difficult to start but seems to run ok at choke speed once you start it up. I let it run at choke for 5 minute and it seemed to keep going. Once you try to open the throttle it will open up and seem to be running but then die. Once you get past this point if you don't kill it and let it return to idle, it struggles and dies once you try to open the throttle again. It appears as though it is a fuel problem since it starts off ok then dies. The one part I did not take apart in the carburetor is the pin mechanism because there was no screw to undo to take it out and I was afraid I would break it. Does anyone have an idea of what it might be? Is it possible I didn't get the carburetor very clean?

Thanks!

On this model, there is what I would call a factory defect. There is a tiny hole in the heat dam gasket on the engine side of the carburetor that is situated too close to the large air intake hole. The gasket will eventually fret away between the small hole and the large hole due to the high velocity air flow. The end result is that the small hole opens up to the large hole causing the carb to supply too little fuel and bog when you rev it up. Replace the heat dam gasket and the blower will work properly.

 

[planet zero]

On this model, there is what I would call a factory defect. There is a tiny hole in the heat dam gasket on the engine side of the carburetor that is situated too close to the large air intake hole. The gasket will eventually fret away between the small hole and the large hole due to the high velocity air flow. The end result is that the small hole opens up to the large hole causing the carb to supply too little fuel and bog when you rev it up. Replace the heat dam gasket and the blower will work properly.

Yes!!!! I spent so much time replacing parts and trying to mess with the carb settings. I eventually replaced the carb with no luck, until I found your reply!! You were right. I cut out the the old gasket, replaced it, and it works great!!! I ended up buying a replacement carb kit from ebay (they're also on amazon), and it comes with a new carb and all the accessories (fuel filter, lines, gaskets, specialty tool for adjusting the carb, etc...) for $16!! Had I read your comment earlier I would have just bought the gasket, but for that price, it's not bad.

Thanks for saving me a lot of money!!