Mercury 150 EFI Service Manual page 370

5. Lubricate center main crankshaft roller bearings and races with light oil.
6. Place center main crankshaft roller bearings on upper and lower main bearing journals
as shown.
7. Install center main bearing races as shown.
8. Secure center main bearing races together with retaining rings. Make sure retaining ring
bridges the separating lines of the bearing race.
90-883728 JULY 2001
a
a - Install so larger of the 3 holes is toward bottom end of crankshaft
b - Verify retaining ring bridges the separating lines of the bearing race
FLYWHEEL END
DRIVE SHAFT END
a - Center Main Bearing Races
b
58614
POWERHEAD
51854
a
a
a
58617
Page 4A-53