2001 Mercury Mariner 50-60HP Factory Service Manual, Page 235Get this manual
CYLINDER HEAD
Camshaft Installation
1Apply engine oil to the main journals (5 places) on the camshaft2Slide camshaft into cylinder head (threaded end towards driven gear)
NOTE: Camshaft retaining pin groove must align with retaining pin hole in cylinder head3Install camshaft retaining pinInstall seal over pin4Place driven gear on camshaft so alignment pin is in holeHold gear with tool (91-83163M) and fasten with washer and boltTighten bolt to the specified torque5Remove any oil from the camshaft lobes and apply Moly Grease to the lift portion of the lobesObtain Moly Grease from local source