ENGINE MECHANICAL
SERVICE MANUAL NUMBER 22
90-860074--1 FEBRUARY 2002 Page 3A-27
TORQUE PROCEDURE AFTER 100 HOURS OF OPERATION, OR FIRST OPERATING SEASON,
WHICHEVER OCCURS FIRST
CAUTION
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.
2
1
4
5
6
7
8
9
10
11
12
13
14
15
16
17 18
19
20
21 22 23 24 25 26
3
1
2
3
4
6
8
9
11
10
12 13 14
7
5
15 16 17 18
75515
a
b
a
b
Torque Sequence Diagram
a-Center Bolt Set
b-Side Bolt Set
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