Mercury 75 Service Manual page 250

Use piston ring expander (91-24697) to remove
piston rings. Always install new piston rings.
NOTE: Cylinders must be honed in order for new
rings to seat properly.
b
a - Piston Ring Expander (P/N 91-24697)
b - Piston Rings
Eye protection MUST BE worn while removing
piston pin lockrings from piston.
Using an awl, remove piston pin lockrings from
both ends of piston pin. Never re-use piston pin
lockpins. Hold shop cloth over lockring area
when snapping out lockrings.
a - Lockrings
4-38 - POWERHEAD
a
51081
a
53986
Support piston and tap out piston pin, using ser-
vice tool 91-74607A2, as shown.
b
a - Piston Pin
b - Wrist Pin Tool (91-74607A2)
Remove piston pin needle bearings (29 per pis-
ton pin) and locating washers (2 per piston) as
shown.
IMPORTANT: We recommend that you use new
needle bearings at reassembly for lasting repair.
However, if needle bearings must be re-used,
keep each set of bearings identified for reas-
sembly on same connecting rod.
a
a - Locating Washers
Inspect crankshaft bearing.
90-830234R3 DECEMBER 1997
a
51086
51088