Mercury Mariner Outboard 225 3 Litre Service Manual 1994, Page 137Get this manual
IMPORTANT: Warming the piston dome using torch lamp will ease removal and installation of piston pin bearing identified for reassembly on same connecting rod
18Support piston and lap out piston pin using service tool (91 -76159A1) as shown
52321Needle Beari ng Locating Washers
52317Piston PinPiston Pin Tool (91-76159A1 )