Mercury 150 EFI Service Manual page 546

6. Remove thrust washer and O-ring. The thrust washer acts as a bearing surface for
the thrust bearing and it should be inspected for pits, rust, scoring or discoloration due
to lack of lubricant. O-ring should be inspected for cuts or abrasions and replaced if
necessary.
7. Remove thrust bearing and thrust washer from bearing adaptor. Thrust roller bearing
should be inspected for pitting, rust or signs of discoloration (blueing) due to lack of
lubricant. If thrust roller bearing must be replaced, the bearing surfaces on the thrust
washer and propeller shaft where the thrust roller bearing rides should also be in-
spected for signs of wear.
b
b
a -
b -
c -
d -
e -
8. The forward gear bearing should be carefully inspected for smoothness of movement,
pits, rust, or signs of discoloration (blueing) due to lack of lubricant. If the bearing must
be replaced, it is recommended that a hammer and cape chisel be used to break the
bearing loose from the bearing adapter. Be careful not to damage bearing adapter
when removing roller bearing.
a -
b -
90-883728 JULY 2001
Thrust Washer
O-Ring (hidden)
Thrust Bearing
Thrust Washer
Bearing Adaptor
b
b
Forward Gear Bearing
Bearing Adaptor
a
a
e
c
55089
a
a
55091
LEFT HAND NON-RATCHETING
c
a
b
d
55090
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