Mercury 40 Service Manual page 264

5. Place a piece of plastigauge onto each crankshaft bearing surface.
a -
6. Install crankcase cover. Apply oil to the cover bolts and torque cover bolts in sequence
and in two steps.
90-828631R3 MARCH 1999
Plastigauge
19
9
10
15
5 6
11
1
2
14
4 3
18
7
8
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)
a
53812
2
20
16
12
13
17
53743
CYLINDER BLOCK/CRANKCASE
Page 4B-23