14. Bleed air from the fuel system and
check for leaks. See Bleeding the Fuel
Changing the Engine Oil and
Replacing Engine Oil Filter Element
To change engine oil and replace the engine
oil filter element, see Changing the Engine
Oil and Replacing the Engine Oil Filter on
Checking or Replacing the Seawater
Pump and Alternator Belts
0003662
(1)
(2)
Figure 7
NOTICE: NEVER get any oil on the belt(s).
Oil on the belt causes slipping and
stretching. Replace the belt if it is damaged.
1. Disconnect battery negative (-) cable
from the battery.
2. Remove belt guard.
3. Check the seawater pump belt
(Figure 7, (1)) and alternator belt
(Figure 7, (2)) for wear, cracks or
damage.
4. Replace if necessary. See your
authorized Yanmar dealer or distributor.
5. Install belt guard and connect battery
negative (-) cable.
Replacing the Zinc Anodes
0006569
(1)
(2)
Figure 8
There are zinc anodes in the seawater
cooling system and they should be
inspected and replaced periodically.
Zinc anodes are located in the heat
exchanger (Figure 8, (1)) and the charge
air cooler (Figure 8, (2)). An additional zinc
anode may also be located in the exhaust /
water mixing elbow.
1. Disconnect battery negative (-) cable.
2. Remove each anode and inspect for
corrosion. Any anode having less than
half its original size remaining should be
replaced.
NOTICE: NEVER use thread sealer or
thread sealing tape when installing zinc
anodes. Anodes must make good
metal-to-metal contact to perform
properly.
3. Install each anode using a new copper
gasket and tighten to 25 N·m (18 ft-lb).
4. Start engine and check for water leaks.
Checking or Replacing the Seawater
Pump Impeller
See your authorized Yanmar dealer or
distributor.
Replacing the Turbocharger Heat
Shield
See your authorized Yanmar dealer or
distributor.
PERIODIC MAINTENANCE
BY Series Operation Manual
53
© 2008 Yanmar Marine International