Mercury Optimax 150 User Manual

POWERHEAD
Page 4A-38 90-855347R1 JANUARY 1999
3. If removed, spread new crankshaft sealing rings just enough to slide over crankshaft
journal.
4. Use Piston Ring Expander (91-24697) and install crankshaft sealing rings into
groove.
51849
51854
a
a-Crankshaft Sealing Rings
5. Lubricate center main crankshaft roller bearings and races with light oil.
51854
a
b
14
2 Cycle Outboard Oil (92-826666A24)
14
a-Install so LARGER of the 3 holes is toward DRIVE SHAFT end of crankshaft
b-Verify retaining ring bridges the separating lines of the bearing race

Mercury Optimax 150 Specifications

General

Horsepower	150 HP
Engine Type	V6
Alternator Output	60 amp / 756 watt
Starting	Electric
Steering	Remote
Displacement	2.5 L
Fuel Induction System	2-Stage Direct Fuel Injection (DFI)
Shaft Length	20", 25"
Dry Weight	431 lbs (20 in), 439 lbs (25 in)