Yanmar 4BY - Intake Manifold; Removal

ENGINE
5-70
BY Service Manual
Intake Manifold
4BY Engines
6BY Engines
Figure 5-121
9. Install center screw OEM No. 11 7 410 (4BY) or
11 6 490 (6BY) in end of crankshaft
(Figure 5-121).
10. Place seal installer OEM No. 11 5 110 over
center screw and install nut.
11. Tighten nut until seal is flush with timing case
cover. Remove installer tool.
12. Install crankshaft damper. See Removing and
Installing Vibration Damper - 4BY on
page 5-50.
13. Install belts. See Remove and Install Alternator
on page 11-7 and Replace Seawater Pump Belt
on page 7-21.
INTAKE MANIFOLD
Removal
Figure 5-122
1. Remove injector harness connectors
(Figure 5-122, (1)) from all fuel injectors.
2. Remove screws (Figure 5-122, (2)) and move
injector harness out of the way.
Figure 5-123
3. Disconnect electrical connectors from charge
air pressure sensor (Figure 5-123, (1)) and
charge air temperature sensor
(Figure 5-123, (2)).
4. Remove four screws (Figure 5-123, (3)).
Disconnect charge air pipe (Figure 5-123, (4))
and bracket (Figure 5-123, (5)).
0003780
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0003781
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1
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4
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5
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