Inspection And Adjustment; Periodic Maintenance Schedule - Yanmar 3YM30 Sevice Manual

2. Inspection and adjustment

2. Inspection and adjustment

2.1 Periodic maintenance schedule

The engine periodic inspection timing is hard to determine as it varies with the application, load status,
qualities of the fuel and lubricating oils used and handling status. General rules are described here.
System
Whole Visual inspection of engine outside
Check the fuel level, and refill
Drain the fuel tank
Drain the fuel filter
Fuel system
Replace the fuel filter
Check the injection timing
Check the injection spray condition
Check the lube oil
level
Lubricating
Replace the lube
system
oil
Replace the engine lube oil filter.
Seawater outlet
Check cooling water level
Cooling Check the impeller of the cooling
system water pump (seawater pump)
Replace the fresh water coolant
Clean & check the water passages
Clean the element of the air intake
silencer
Clean the exhaust/water mixing
Air intake
elbow
and
exhaust
system
Check the exhaust gas condition
Diaphragm assembly inspection
: User-maintenance
Before
Item
starting
Crankcase
Marine gear
Crankcase
Marine gear
Sail drive
operation
When long life coolant of a specified type is used,
replacement period of two years can be obtained.
operation
: Parts replacement
2 2
Initial Every
* *
50hrs. or 50hrs. or
one month one month
During
Every year
During
15
: Shop-inspection
2
2
2
Every
Every Every *
*
100 hrs. or
1000 hrs. or
250 hrs. or
two months one year
4 years
1
*