Small Engines (Lawn Mowers, etc.): Followup Honda GX120 Question, air mixture, classen aerator

Question
I have a Honda GX120 small engine on a Classen aerator that runs fine except when it travels over any tiny hill or gets bounced around.  The engine will almost always shut down and I have to restart it.  What seems to be the problem ?

I checked the carburetor float and it doesn't seem to be sticking, but it does hang down and is not level with the bowl seat.  How do I fix this problem ?

Also, you said to open the low and high air mixture screws 1/4 turn counter clockwise.  For some reason the screws on a Honda GX120 engine are not easy to locate like most other engines.  I'm not sure where they are at.  Thanks again.  

Answer
 Hello Dennis:

 I Notice that this Engine May hae a Low Oil Shut Off Switch. If So, This can be the Cause of the Problem. On the Float Issue. Turn the Float so it is Facing Up. It Should be Level with the Bowl when in this Position. When the Float is Facing Down it Should Hang. To Adjust the Float, Bend the Small Ear that Pushes and Pulls on the Needle. Your Carburetor May be the Non Adjustable Carburetor. However, here are some Instructions that May help you Locate them if it does have them. **The High Air Mixture Screw is In the Carburetor Bowl in the Center of the Nut or Some Carburetors have Both the Low and High Side by Side on the Top Side of the Carburetor. The Screw Closest to the Engine Is Usually the High Air Mixture Screw on this Type Carburetor.The Low 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 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 High Air Mixture Screw(bottom of the bowl) In Until the Engine is Revving Properly. Now Slow Engine to Idle. Set the Low Air Mixture Screw so there is No Hesitation when Throttling from Idle to Full Throttle. Now Set the 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