QuestionQUESTION: HOnda push mower: don't have any more i.d. info than this. What should compression be? Thanks in advance.
ANSWER: Hello Will:
The Engine Compression should be No Less than 90PSI for the Engine to Operate Properly. If this is an OHV (Over Head Valve) Engine, then the Exhaust Valve Clearance will have to be Opened Enough for the Compression Release Not to Operate in Order to get a Proper Compression Reading. You can View a Breakdown/IPL of the Mower/Engine at this Site Addy, http://hayward.arinet.com/scripts/EmpartISAPI.dll?MF&app=ASP&lang=EN&TF=Mainfram and Select the Catalog American Honda. 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. Ratings and Comments are Greatly Appreciated. Thanks.
Respectfully
John
---------- FOLLOW-UP ----------
QUESTION: You stated: "If this is an OHV (Over Head Valve) Engine, then the Exhaust Valve Clearance will have to be Opened Enough for the Compression Release Not to Operate in Order to get a Proper Compression Reading."
How do I do this/check compression on an OHV engine?
Again, thanks for your response
AnswerHello Again Will:
Remove the Valve Cover and Set the Exhaust Valve Clearance to .020in. This Clearance will Allow the Exhaust to Open and yet the Compression Release Mechanics will Not Function. Now Do the Compression Test. The Following is a Basic File I made for Setting the Valve Clearances. Any Input is Appreciated. **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 on the Compression Stroke 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.** On Some Engines you can Us a Straightened Coat Hanger and Feel the Piston. Be Careful and Dont Jam the Wire in the Cylinder. Usually the Piston will Push the Wire Out of the Spark Plug Hole with No Problems. 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. Ratings and Comments are Greatly Appreciated. Thanks.
Respectfully
John
