Mercury 75 Service Manual page 251

Only if removal is necessary, remove retaining
ring, using a pair of snap-ring pliers.
a - Crankshaft Bearing
b - Retaining Ring
NOTE: There is NO main bearing retaining ring or re-
taining ring groove in the crankshaft on the following
outboards: 75/90/100/115/125 -- SERIAL NUMBER
OC259434 and above.
Press crankshaft out of bearing, as shown.
90-830234R3 DECEMBER 1997
If oil pump drive gear replacement is necessary,
remove gear after pressing off main bearing
(slides-off shaft). Lower crankshaft seal carrier.
a
b
20037
a
a - Oil Drive Gear
b - Key
Seal carrier is press-fitted into the spline end of
crankshaft.
NOTE: Seal should be replaced as a routine proce-
dure without regard to appearance, to prevent water
leakage into crankshaft/driveshaft splines.
Remove seal by prying out of carrier, using an
awl.
Inspect seal carrier for damage or looseness.
If replacement of carrier is necessary, use a pliers
to pull carrier from crankshaft, or tap gently off
with screwdriver and mallet.
a - Seal Carrier
b - Seal
20340
b
51084
a
b
20037
POWERHEAD - 4-39