Small Engines (Lawn Mowers, etc.): Lawnboy Lawn mower carb / throttle adjust, air mixture, carburetor


Question
I have a Lawnboy 5247 lawn mower.
I did a thorough clean up of all easily accessible components - Disassembled the carburetor and cleaned all parts. I also appear to have good spark plug firing.
After the clean up, the mower first started very well after, however subsequent cold starts are not as easy as I would expect. Then sometimes they are. I suspect the throttle mechanism could require an adjustment. However, I can't seem to be able to find any literature on such adjustments.
Can you please help? Regards, Denis

Answer
Hello Denis:

From your Description it Sounds like the Governor May Require Resetting. If you Removed/Loosened the Governor Arm to Remove the Carburetor, then Reset the Governor. **To Reset the Governor; Loosen the Governor Arm Bolt and Turn the Governor Shaft Clockwise Until it Stops. Using the Governor Arm Hold the Carburetor to Full Throttle. Now with the Shaft Full Clockwise and the Governor Arm and Carburetor Held at Full Throttle, Tighten the Governor Arm Bolt. If the Engine Still Runs Full Throttle, then Reverse the Rotation of the Governor Shaft, but Still Hold the Carburetor at Full Throttle with the Governor Arm. If it Still Runs at Full Throttle, then Check the Internal Governor.** If this Carburetor has Air Mixture Screws, then  The Following it the Instruction File for Setting the Air Mixture Screws. Now Setting the Air Mixture Screws:  ****Turn the Idle Air and Main Air Mixture Screws In Until SNUG **Do Not Jam** Then Reverse Both Screws 1 1/2 Turns. Holding the Throttle Full Open, Start the Engine. Turn the Main Air Mixture Screw Clockwise Until Proper Revs are Obtained. Occasionally you May have to Turn this Counter Clockwise to Achieve the Proper Revs. Now Allow the Engine to Idle. Set the Engine Idle Screw (Not Idle Air) so the Engine will Stay Running if Required. Now Set the Idle Air Mixture Screw so there is No Hesitation when Throttling from Idle to Full Throttle. Reset the Engine Idle if Required.**** If you Hit a Snag or this Does Not Correct the Problem,  I am Here if You Require More Assistance. Hope this Helps. Let me Know What Happens, Please. May the All Mighty Bless You and Yours. Thanks.

Good Luck

Respectfully

John

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Respectfully

John