Small Engines (Lawn Mowers, etc.): adjustment of valve lash 6.5 honda OHC, twin cylinder engines, correct valve clearances

Question
i had the machine in last couple of months for a no start , they made a " valve adjustment " now it is doing the same thing backfires thru the carb , won't start , how hard is it to adj the valve myself and get it running , thanks

Answer
Hello Walter:

Sorry for the Delay. This Question was Located in the Question Pool. **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.**  However, Depending on your Engine Model the Clearances May be Different. Go to this Site Addy; http://www.johnfvining.com/engine_specs/honda_valve_gaps.asp and you can Get the Correct Valve Clearances for this Engine. 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