Mercury MerCruiser D2.8L D-Tronic Service Manual page 227

SERVICE MANUAL NUMBER 22
TORQUE PROCEDURE AFTER 100 HOURS OF OPERATION, OR FIRST OPERATING SEASON,
WHICHEVER OCCURS FIRST
Avoid component or engine failure. Cylinder heads require additional angular
torque and conventional torque application after the first 100 hours or first
operating season, whichever occurs first.
IMPORTANT: Engine must be have been operated 100 hours or for one operating
season, whichever occurs first.
1. Let engine cool down completely (inoperative overnight, if possible).
2. In sequence and without loosening, tighten 14 mm center bolts through an angle of 15
degrees.
3. In sequence and without loosening, tighten port and starboard 12 mm side bolts through
an angle of 15 degrees.
Torque Sequence Diagram
90-860074--1 FEBRUARY 2002
21 22
13
1
14
2
16
15
15
1
10
a - Center Bolt Set
b - Side Bolt Set
CAUTION
23 24
3 11
12 4
17 18
16 17
9 3
2 8
11 12 13
ENGINE MECHANICAL
25 26
5 9
7
8
10 6
19
20
b
18
a
5
7
4
6
14
b
a
75515
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