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Mercury 40 FourStroke - Page 283

Mercury 40 FourStroke
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CYLINDER BLOCK/CRANKCASE
Page 4B-22 90-857046R1 NOVEMBER 2001
6. Install crankcase cover. Apply oil to the cover bolts and torque cover bolts in sequence
and in two steps.
1
2
3
4
5 6
78
9 10
11
12
13
14
1516
Crankcase Cover Bolt Torque
Center Bolts Qt
. 8
1st Torque: 11 lb-ft. (15 Nm)
.
(M8x82)
2nd Torque: 22 lb-ft. (30 Nm)
Outer Bolts Qt
. 8
1st Torque: 53 lb-in. (6 Nm)
.
(M6x35)
2nd Torque: 106 lb-in. (12 Nm)
7. Remove the crankcase cover. Measure the compressed plastigauge to check the main
bearing clearance. Replace bearings if clearance is not in specification.
53751
Main Bearing Clearance
0.0005 - 0.0017 in. (0.012 - 0.044 mm)
8. If replacement of the main bearings is required, refer to Main Bearing Selection and
Installation in Cylinder Block Reassembly.

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