honda harmony mower; valves stuck. Cleaned ... what's the clearance spec?

Discussion in 'Mechanic and Repair' started by chris.miller, Aug 2, 2005.

  1. chris.miller

    chris.miller LawnSite Member
    Posts: 1

    Anywhere I can find basic info on the 5 hp honda harmony OHV engine?
    Mower had probably never had oil changed; valves stuck in guides and thus lost compression.

    cleaned them out, and they move fine, but now the clearance is off.
    Any idea on how to set the clearance, and what the spec would be?
    Thanks, Chris
  2. Restrorob

    Restrorob LawnSite Fanatic
    Posts: 11,023

    I don't have the exact valve spec. on this engine, But most other small honda engines are .003 intake and .005 exhaust. There is a locking set screw in the center of the adjustment nut, Loosen this screw and adjust the nut to the proper clearance with the piston at top dead center compression stroke and while holding the nut retighten the set screw.

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