Well people... here's the fix to getting your Ryobi SS30, running correctly or at lease usable again. All the cleaning and horsey farting around will not help if the carb adjustment is not correct. The one screw that you can access just adjusts the speed of the engine to keep the clutch from engaging to soon. Set this last. The SS30, RY30240 of mine was running lean. You would give it throttle and it just bogged down. Not getting enough fuel. The following worked for me. The carb adjustment screws are surrounded with pot-metal and not slotted to adjust. The factory will not sell you the tool. So you need to remove the air-cleaner housing. Open it up and remove the filter (a little sponge). Now you can access the two nuts to remove the carb. You need to remove the carb (Easy! 2 nuts, throttle wire and fuel tubes. Pay attention to which ones go where and pull) this will make it easier to remove some of the metal with dremmel tool, file or what ever it takes. Or you could just grind the slots in the screws without messing with removing the metal around them. Just be careful not to screw-up the 2 screws and also be careful with sparks. You are working around gasoline. After you get the metal removed ,or just grind the slots, enough around the screws take your dremmel tool with a fine disk and grind a slot in top of each screw. Take your time and be careful. Now you have slots for a small screw driver to make your adjustments. Re-assemble in reverse. Get the machine running and make your first adjustment to the screw on the right and turn counter clock wise. This will richen the fuel ratio of the fuel mixture. Make small corrections. Go back and forth until the engine will stay idling nicely and the engine will not die when you give it throttle. You will find the engines sweet spot. Now work with the engine with full throttle with the screw on the left. This will take a little more twinking. To much, counter clockwise (richer) or clockwise (leaner) and you loose power and could burn up the engine. What do you have to loose. Work at this going back and forth from ideal to full power. It may not run the best, just make sure it ideals, transitions well to full power and has good power at full throttle. This is at best a cob-job fix and voids our warranty, if there is one left. But it was better for me and cheaper than buying a whole new unit. Good luck, JDH
JDH, July 2010