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Cylinder Head Cover Installation

  1. Check the spark plug seals (A) for damage. If the seal is damaged, replace it.
    Fig 1: Identifying Spark Plug Seals, Cylinder Cover And Gasket
    G08091881Courtesy of AMERICAN HONDA MOTOR CO., INC.
  2. Thoroughly clean the head cover gasket (B) and the groove of the cylinder head cover.
    NOTE: Check and if necessary, replace the head cover gasket.
  3. Install the head cover gasket in the groove of the cylinder head cover (C). Make sure the gasket is evenly seated securely.
  4. Remove all of the old liquid gasket from the chain case.
  5. Clean the head cover contacting surfaces with a shop towel.
  6. Apply liquid gasket (P/N 08717-0004, 08718-0003, or 08718-0009) to the cam chain case contact areas (A). Install the component within 5 minutes of applying the liquid gasket.
    NOTE:
    • Apply a 3.0 mm (0.118 in) diameter bead of liquid gasket to the chain case contact areas.
    • If you apply liquid gasket P/N 08718-0012, the component must be installed within 4 minutes.
    • If too much time has passed after applying the liquid gasket, remove the old liquid gasket and residue, then reapply new liquid gasket.
    Fig 2: Identifying Liquid Gasket Applying Areas Of Cam Chain Case
    G08091882Courtesy of AMERICAN HONDA MOTOR CO., INC.
  7. Place the cylinder head cover (A) on the cylinder head, then slide the cover slightly back and forth to seat the head cover gasket.
    NOTE:
    • Wait at least 30 minutes before filing the engine with oil
    • Do not run the engine for at least 3 hours after installing the head cover
    Fig 3: Identifying Cylinder Head Cover Assembly
    G08091883Courtesy of AMERICAN HONDA MOTOR CO., INC.
  8. Inspect the cover washer (B). Replace any washer that is damaged or deteriorated.
  9. Tighten the bolts in three steps. In the final step, torque all bolts, in sequence, to 10 N.m (1.0 kgf.m, 7.2 lbf.ft).
    Fig 4: Tightening Sequence Of Cylinder Head Cover Mounting Bolts
    G08091884Courtesy of AMERICAN HONDA MOTOR CO., INC.
  10. Connect the breather hose (A), and install the harness holder (B).
    Fig 5: Breather Hose, Harness Holder And Mounting Bolts With Torque Specifications
    G08091885Courtesy of AMERICAN HONDA MOTOR CO., INC.
  11. Install the eight ignition coils (see IGNITION COIL AND SPARK PLUG REMOVAL/INSTALLATION ).
  12. Install the intake manifold (see INSTALLATION ).
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