MDX V6-3471cc 3.5L (2002)
12. Set the No. 1 piston at TDC. Align the pointer (A) on the front upper cover with the No. 1 piston TDC mark (B) on the front camshaft pulley.
13. Select the correct thickness feeler gauge for the valves you're going to check.
Intake: 0.20 - 0.24 mm (0.008 - 0.009 inch)
Exhaust 0.28 - 0.34 mm (0.011 - 0.013 inch)
Adjusting screw locations
14. Insert the feeler gauge (A) between the adjusting screw (B) and the end of the valve stem and slide it back and forth; you should feel a slight
amount of drag.