Yanmar 8LV320 Operation Manual page 55

■ Replacing the Zinc Anode
The timing for replacing zinc anode varies
depending on the characteristics of the seawater
and operational conditions. Inspect the zinc
periodically and remove the corroded area on the
surface. Replace the zinc anode when it has
decreased to less than 1/2 of the original volume. If
replacement of zinc is neglected and operation is
continued with a small volume of zinc anode,
corrosion of the seawater cooling system will occur
and water leakage or parts breakage will result.
The label shown in the figure is stamped on the
plugs which have the zinc anode. Be sure to close
the seacock before removing the plug to replace
the zinc anode.
1
ZINC ZINC
1 - Sticker
2 - Zinc Anode
3 - Plug
Figure 13
1
1 - Heat Exchanger Zinc Anode
Figure 14
8LV Series Operation Manual
2
3
002719-01X
037449-00X00
PERIODIC MAINTENANCE
■ Changing the Coolant
Wear eye protection and rubber gloves when
you handle engine coolant. If contact with the
eyes or skin should occur, flush eyes and wash
immediately with clean water.
Replace coolant every year.
NOTICE
Never mix different types and/or colors of coolants.
Discard old coolant in an approved manner
according to environmental laws.
Note: The drain cocks are opened before shipping
from the factory.
1. Open all coolant drain cocks.
2. Allow the coolant to drain completely. Dispose
of waste properly.
3. Close all the drain cocks.
4. Fill coolant tank and coolant reservoir tank with
appropriate coolant. See Engine Coolant
Specifications on page 25 and See Checking
and Adding Coolant on page 25.
■ Location of Coolant Drain Cocks
(Colored Gray)
Lubricating Oil Cooler
Figure 15
CAUTION
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