Small Engines (Lawn Mowers, etc.): toro recyclerr, air mixture, adjustment screws

Question
Hello - I bought a torro recycler about 2 years ago.  It never really ran well.  It would run great for about 5 minutes, but even during that time was really easy to bog down.  I would have to mow evey three days or the mower would need a lot of re-starting after killing.  I took it in and was told that the carb was dirty and had some water in it.  Afterr getting it home it seemed fine when I tested it out.  That afterrnoon I got a broken rider from a friend and put new rings into it and it was fine, so I didn't really use the toro again.  Now I have a smaller yard and tried it out - ran for 2 minutes and quit.  Same problem as before.  It runs for a minute or two under load and then quits.  Its then really hard to start.  It seems like the mixture is wrong, but there are no settings to check, just a factory preset carb.  Anything I could check or possibly tweak to get it to run better short of a new carb?

Answer
Hello Andy:

A Good Carburetor Cleaning is Again Required or the Adjust may need Tweaked. Here are the Instructions for Setting the Air Mixture Screws. ****The Operational/High RPM Air Mixture Screw is In the Carburetor Bowl in the Center of the Nut or Some Carburetors have Both the Idle Air and Operational Air Adjustment Screws Side by Side on the Top Side of the Carburetor. The Screw Closest to the Engine Is Usually the Operational Air Mixture Screw on this Type Carburetor.The Idle Air Mixture is the One at Top on the Side and Goes Into the Carburetor.   Some have the Idle Air Mixture Screw Going Vertically Into the Top of the Carburetor. The Engine Idle Screw is the One that Moves the Throttle Plate. The Following is the Directions for Setting these Screws. **If the Carburetor was Soaked Overnight in Carburetor Cleaning Solution and the Passages Blown Out with Compressed Air and a New Kit Installed,  then we can Set the Air Mixture Screws. Turn Both Air Mixture Screws In Until Seated. **DO NOT JAM  SNUG ONLY** Turn Both Screws Out 1 1/2 Turns. Set the Throttle to Full Open and Start the Engine. Override the Throttle by Pushing the Governor Arm by Hand and Turn the Operational/High Air Mixture Screw(bottom of the bowl) In Until the Engine is Revving Properly. Now Slow Engine to Idle. Set the Idle Air Mixture Screw so there is No Hesitation when Throttling from Idle to Full Throttle. Now Set the Engine Idle if Required.**** Hope this Helps. I am here if you Require more Assistance. Let me know what Happens, Please. Thanks.

Good Luck

Respectfully

John