INSPECTION AND MAINTENANCE
6LT Series Operation Manual
43
MAINTENANCE SCHEDULE
1) Fuel compliant with standard EN 590 (sulfur content less than 10 ppm) and/or ASTM D975 (sulfur content less than 15 ppm)
2) Minimum specifications of engine oil: compliant with standard ACEA E7 and/or API CI-4. Degree of viscosity: see the table on the page 28.
3) Engine coolant standard solution: organic base compliant with specifications ASTM D6210 Type 1-FF. If concentrated products are used, they
must be mixed 50% with water. Original Yanmar products are recommended.
4) The anode must be replaced if the corrosion has affected more than 50% of the volume of zinc.
5) Seawater/combustion air heat exchanger: clean both the air and water section; seawater/engine coolant exchanger: clean the seawater section;
seawater/oil exchanger: clean the seawater section.
Item
Periodic Maintenance Interval
Daily 150 300 600 900 1200 2400 3000
Daily
Every
150 hours
or monthly
whichever
comes first
Every
300 hours
or 1 year
whichever
comes first
Every
600 hours
or 1 year
whichever
comes first
Every
900 hours
or 1 year
whichever
comes first
Every
1200 hours
or 2 years
whichever
comes first
Every
2400 hours
or 4 years
whichever
comes first
Every
3000 hours
or 5 years
whichever
comes first
Engine oil level check
Engine coolant level check
Drain the water from the pre-filter.
Check the level of the electrolyte
solution and clean the battery poles.
/ or
every
6 months
Check the condition of the air filter.
Clean and replace if necessary.
Replace
Check zinc anode wear; replace (4) if
necessary. In warm and very salty
waters such as the Mediterranean,
please check anodes every 6 months.
Check the condition of the oil vapour
recirculation filter; replace the filter if
necessary.
Replace at
600 h
Engine oil replacement (2)
Replace the engine oil filter (2).
Check the condition of the filter at the
seawater pump inlet. Clean if
necessary.
Fault memory reading via diagnostics
tool
Check the state of wear of the
seawater pump rotor. Replace if
necessary.
Check the sections of the seawater
cooling circuit pipes and clean if
necessary.
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