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Valve Clearance Adjustment: Adjustment

NOTE:  Connect the HDS to the DLC, and monitor ECT SENSOR 1. Adjust the valve clearance only when the engine coolant temperature is less than 100 °F (38 °C).

  1. Cylinder Head Cover - Remove
  2. Valve Clearance - Adjustment
    GHH81116Courtesy of HONDA, U.S.A., INC.
    		 1. Turn the crankshaft to align No. 1 position at top dead center (TDC); the white mark on the crankshaft pulley (A) lines up with the pointer (B).
    GHH81117Courtesy of HONDA, U.S.A., INC.
    		 2. Check the No. 1 piston at top dead center (TDC). The "UP" mark (A) on the camshaft sprocket should be at the top, and the TDC grooves (B) on the camshaft sprocket should aline up with the top edge of the cylinder head.
    GHH81118Courtesy of HONDA, U.S.A., INC.
    		 3. Select the correct feeler gauge for the valve clearance you are going to check.

    Valve Clearance 

    Intake:  0.21-0.25 mm (0.009 in)
    Exhaust:  0.25-0.29 mm (0.010-0.011 in)
    GHH81119Courtesy of HONDA, U.S.A., INC.
    		 4. Insert the feeler gauge (A) between the tappet adjusting screw and the end of the valve stem on the No. 1 cylinder, and slide it back and forth; you should feel a slight amount of drag.
    GHH81120Courtesy of HONDA, U.S.A., INC.
    		 5. If you feel too much or too little drag, loosen the locknut, and turn the tappet adjusting screw until the drag on the feeler gauge is correct

    6. While holding the tappet adjusting screw with the screw driver, tighten the locknut, then recheck the clearance. Repeat the adjustment, if necessary.
    Specified Torque 
    14 N.m (1.4 kgf.m, 10 lbf.ft) 
    Apply new engine oil to the nut threads. 
    GHH81121Courtesy of HONDA, U.S.A., INC.
    		 7. Rotate the crankshaft 180 ° clockwise (camshaft pulley turns 90 °)

    8. Check, and if necessary, adjust the valve clearance on the No. 3 cylinder.
    GHH81122Courtesy of HONDA, U.S.A., INC.
    		 9. Rotate the crankshaft 180 ° clockwise (camshaft pulley turns 90 °)

    10. Check, and if necessary, adjust the valve clearance on the No. 4 cylinder.
    GHH81123Courtesy of HONDA, U.S.A., INC.
    		 11. Rotate the crankshaft 180 ° clockwise (camshaft pulley turns 90 °)

    12. Check, and if necessary, adjust the valve clearance on the No. 2 cylinder.
  3. All Removed Parts - Install
      1. Install the parts in the reverse order of removal.
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