Yanmar 6BY2 - Flywheel and Flywheel Housing; Remove and Install Flywheel Housing

ENGINE
Flywheel and Flywheel Housing
12/05
BY Service Manual
5-37
© 2009 Yanmar Marine International
FLYWHEEL AND FLYWHEEL
HOUSING
Remove and Install Flywheel Housing
1. Disconnect the negative (-) battery cable from
the battery.
2. Remove the marine gear or stern drive (as
equipped).
3. Remove two bolts (Figure 5-64, (1) and
Figure 5-65 (1)) and remove starter motor
(Figure 5-64, (2) and Figure 5-65 (2)). See
Remove and Install Starter Motor on page 10-5.
Figure 5-64Stern Drive Engines
Figure 5-64
Figure 5-65Marine Gear Engines
Figure 5-65
4. Remove bolts securing oil sump to flywheel
housing.
5. Remove 11 bolts (Figure 5-64, (3) and
Figure 5-65 (3)). Remove housing
(Figure 5-64, (4) and Figure 5-65 (4)). Use
care not to lose the two alignment sleeves
(Figure 5-64, (5) and Figure 5-65 (5)) and the
dowel (Figure 5-64, (6) and Figure 5-65 (6)).
6. Clean mating surfaces. Install alignment
sleeves and dowel in flywheel housing.
7. Install flywheel housing.
8. Install washers on the M10 x 130, M8 x 130 and
M8 x 40 bolts.
9. Install 11 bolts and washers. Tighten in two
stages to specifications.
Flywheel Housing Torque
10. Install the starter motor. See Remove and
Install Starter Motor on page 10-5.
11. Connect battery negative (-) cable.
0006512
(
1
)
(
3
)
(
4
)
(
5
)
(
2
)
(
5
)
(
6
)
0006513
(
1
)
(
3
)
(
4
)
(
5
)
(
2
)
(
5
)
(
6
)
Item Initial Torque Final Torque
M12 Bolt
15 N·m
(133 in.-lb)
80 N·m
(59 ft-lb)
M10 Bolt
46 N·m
(34 ft-lb)
M8 Bolt
23 N·m
(204 in.-lb)