Small Engines (Lawn Mowers, etc.): 31p777/18.5 intek single, twin cylinder engines, compression stroke

Question
draggy start,seems like to much compression.new 300ca battery.you can roll engine manualy off compression & starts right up & runs perfect.maybe valves ? what do you think? if so how do they adjust? thanks for being here john.you are wealth of info!i learn alot by reading your  responses. thanks scott

Answer
Hello Scott:

Thanks for the Good Words. I Hope I am Saving Some People Time and Money. From your Description, I would Say you are Correct. The Valves Require Adjusting so the Compression Release can Operate Correctly. **I Do Not Use the Setting Called for by the OEMs. I have Found that the Following Works Best. Remove the Valve Cover (on the Dead Cylinder for Twin Cylinder Engines). Set the Cylinder you are Setting the Valves on to Top Dead Center (Both Rocker Arms will have Play in them when the Engine is at TDC) When Setting the Valve Clearance. Now Loosen the Valve Adjuster Locks and Set the Intake Valve Clearance to .004in -.006in and the Exhaust to .007in - .009in. I have had Better Performance Out of the Mowers and Less Burnt Valves Using these Settings. Be Sure the Piston is at TDC on the Compression Stroke.**  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

PS: I am Allowed to Answer 10 Questions a Day. If you See I am Maxxed Out, then Try Submitting your Question at or Just After 8pm EST (US). My New Day Starts then. Thanks.

Respectfully

John