Check Or Replace The Anodes (Engines With Heat Exchangers); Replace The Air Intake Filter - Yanmar 6SY Series Operation Manual

PERIODIC MAINTENANCE
Replace Crankcase Ventilation
Filter
See Replace the Closed Crankcase
Ventilation Filter Element on page 87.
Check or Replace the Anodes
(Engines with Heat
Exchangers)
Drain the seawater cooling circuit and
check the anodes (Figure 16).
Note: Only two anodes are shown.
Figure 16
• Scrape off all loose material on the
anodes.
• A new anode is 63 mm (2.50 in.) long
with a diameter of 17 mm (11/16 in.).
Replace an anode if less than half of the
anode remains.
IMPORTANT
If operation is continued with an anode
less than half of the new anode length,
corrosion of the seawater coolant
system will occur and water leakage or
parts breakage will result.
Note: If the anodes are extremely
corroded, check them more
frequently.

Replace the Air Intake Filter

Note: Replace the air cleaner filter
sooner than every 500 hours if
the restriction indicator is red.
94
A
DANGER
NEVER start the engine unless
the air filter is installed.
Failure to comply will result in
death or serious injury.
CAUTION
ALWAYS use genuine Yanmar
replacement parts (super-fine
mesh filter). Using anything
except genuine Yanmar parts
can cause engine damage,
uneven engine performance and
shorten engine life.
1. Loosen clamps.
2. Remove the filter element.
3. Carefully blow the filter element clean
from the inside with dry compressed air
or install new filter element in housing.
Note: There is a risk of damaging the
filter when it is cleaned. The filter
can only be cleaned a maximum
of four times. A cleaned filter
does not filter as well as a new
filter.
4. Insert a flashlight into the filter and
check from the outside that there are no
holes or cracks in the filter paper.
Replace the filter if it has the slightest
damage.
5. Mark the date the filter has been
cleaned.
6. Reassemble the air cleaner in reverse
order.
7. Tighten clamps securely.
6SY Operation Manual
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