Mercury 45 Service Manual

CYLINDER BLOCK/CRANKCASE
Page 4B-2390-828631R3 MARCH 1999
5. Place a piece of plastigauge onto each crankshaft bearing surface.
53812
a
a-Plastigauge
6. Install crankcase cover. Apply oil to the cover bolts and torque cover bolts in sequence
and in two steps.
53743
2
1
2
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20
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Crankcase Cover Bolt Torque
Center Bolts Qty. 10 (Larger Diameter M8)
1st: 11 lb-ft (15 Nm)
2nd: 22 lb–ft (30 Nm)
Outer Bolts Qty. 10 (Smaller Diameter M6)
1st: 53 lb–in. (6 Nm)
2nd: 106 lb-in. (12 Nm)

Mercury 45 Specifications

General

Horsepower	45 HP
Cylinders	3
Starting	Electric
Full Throttle RPM Range	5000-6000 RPM
Steering	Remote
Exhaust	Through Prop
Shaft Length	20 in