Valve Clearance Adjustment
Special Tools Required
Image Description/Tool Number
310232.png Adjuster 07MAA-PR70110
310233.png Locknut Wrench 07MAA-PR70120

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

Remove the cylinder head cover.

2. Valve Clearance - Adjust
1.
Set the No. 1 piston at top dead center (TDC). The punch mark (A) on the VTC actuator and the punch mark (B) on the exhaust camshaft sprocket should be at the top. Align the TDC marks (C) on the VTC actuator and the exhaust camshaft sprocket.
2.
Select the correct feeler gauge for the valve clearance you are going to check.
Valve Clearance
Intake:
0.21?0.25 mm (0.009?0.009 in)
Exhaust:
0.25?0.29 mm (0.010?0.011 in)
3.
Insert the feeler gauge (A) between the adjusting screw (B) 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.
4.
If you feel too much or too little drag, loosen the locknut with the locknut wrench and the adjuster, and turn the adjusting screw until the drag on the feeler gauge is correct.
5.
Tighten the locknut to the specified torque, and 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.
6.
Rotate the crankshaft 180 ° clockwise (camshaft pulley turns 90 °).
7.
Check and, if necessary, adjust the valve clearance on the No. 3 cylinder.
8.
Rotate the crankshaft 180 ° clockwise (camshaft pulley turns 90 °).
9.
Check and, if necessary, adjust the valve clearance on the No. 4 cylinder.
10.
Rotate the crankshaft 180 ° clockwise (camshaft pulley turns 90 °).
11.
Check and, if necessary, adjust the valve clearance on the No. 2 cylinder.

3. Cylinder Head Cover - Install

Install the cylinder head cover.