Yanmar 6BY2 - Page 50

PERIODIC MAINTENANCE
Periodic Maintenance Schedule
4-6 BY Service Manual
© 2009 Yanmar Marine International
Cooling
System -
Seawater
Circuit
Visual inspection of cooling
system
c
Before
starting
Check the seawater outlet c
Before
starting
Check seawater pump belt
for wear, replace if
necessary

Check seawater filter (if
equipped) and inlet
c
Replace the anodes
*

Check or replace the
seawater pump impeller
c
Air Intake and
Exhaust
System
Visual inspection c
Before
starting
Replace turbocharger heat
shield

Check the exhaust pipe c
Check the air intake
system
c
Check the exhaust / water
mixing elbow
c
Replace the air filter
element
c
Electrical
System
Check the electrolyte level
in the battery (serviceable
batteries only)
c
Check the wiring
connectors
c
Before
starting
Check alternator belt for
wear or replace belt
c
c: Check : Replace
System Item
Periodic Maintenance Interval
Daily
Every 50
hours or
monthly
whichever
comes first
Every 250
hours or
one year
whichever
comes first
Every 500
hours or
2 years
whichever
comes first
Every 1000
hours or
4 years
whichever
comes first
Every 2000
hours or
8 years
whichever
comes first