Yanmar BY Series Service Manual page 52

Periodic Maintenance Schedule
: Check : Replace
System
Cooling
System -
Seawater
Circuit
Air Intake and
Exhaust
System
Electrical
System
BY Service Manual
Item
Visual inspection of cooling
system
Check the seawater outlet
Check seawater pump belt for
wear
Check seawater filter (if
equipped) and inlet
Replace the zinc anodes*
Check or replace the seawater
pump impeller
Visual inspection
Replace turbocharger heat
shield
Check the exhaust pipe
Check the air intake pipes
Check the exhaust / water
mixing elbow
Clean or replace the air filter
element**
Check the electrolyte level in the
battery (serviceable batteries
only)
Check the wiring connectors
Check alternator belt for wear
PERIODIC MAINTENANCE
Periodic Maintenance Interval
Every 50
hours or hours or one
Daily monthly
whichever
comes first
Before
starting
Before
starting
Before
starting
Before
starting
Every 250 Every 500
hours or
year 2 years
whichever whichever
comes first comes first
4-9