Yanmar 6LY3 series Service Manual

ENGINE
Disassembling the Engine and Components
5-20 6LY3 Service Manual
© 2007 Yanmar Marine International
Removing the Starter Motor
Remove the starter motor from the flywheel
housing.
Removing the Alternator
1. Loosen the alternator adjusting bracket
(Figure 5-6, (1)) and remove the V-belt
(Figure 5-6, (3)).
Figure 5-6
Figure 5-6
1 – Adjusting Bracket
2–Alternator
3–V-Belt
4 – Coolant Pump
2. Remove the adjusting bracket from the coolant
pump (Figure 5-6, (4)).
3. Remove the alternator (Figure 5-6, (2)) from
the drive shaft housing.
Removing the Coolant Tank, Cooler
and Pump
1. Remove the coolant tank (Figure 5-7, (1)) and
gasket.
Figure 5-7
Figure 5-7
1–Coolant Tank
2–Dipstick
3 – Heat Exchanger
4 – Seawater Pump
2. Remove the heat exchanger (Figure 5-7, (3)).
3. Remove the coolant pump and gasket.
Removing the Seawater Pump
Remove the seawater pump (Figure 5-7, (4)).
Removing the Oil Filter and Oil
Cooler
1. Remove the oil filter (Figure 5-5, (2)).
2. Remove the oil cooler (Figure 5-5, (1)).
3. Remove the oil dipstick and guide
(Figure 5-7, (2)).
Removing the Electronic Control
Devices
Remove the cover, the electronic control unit,
amplifier and fuse.
Removing the Fuel Injection Lines
1. Remove the fuel injection hose retainer.
2. Loosen the cap nuts on both ends of the fuel
injection hose and remove the fuel injection
hose.
0005776
(1)
(4)
(3)
(2)
0005777
(4)
(3)
(2)
(1)

Yanmar 6LY3 series Specifications

General

Brand	Yanmar
Model	6LY3 series
Category	Engine
Language	English