2001 Mercury Mariner 50-60HP Factory Service Manual, Page 214Get this manual

2001 Mercury Mariner 50-60HP Factory Service Manual, Page 214

CYLINDER HEAD
NO3 AND NO4 INTAKE VALVES NO2 AND NO4 EXHAUST VALVES 1Turn the driven gear and align the "" mark on the gear with the cylinder head mark "n"2Adjust the valve clearance for No3 and No4 intake valves and No2 and No4 exhaust valves