Inspection And Adjustment; Periodic Maintenance Schedule - Yanmar 3JH4E Service 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
Visual inspection of engine
Whole
outside
Check the fuel level, and refill
Drain the fuel tank
Drain the fuel/water separator
Fuel
Replace the fuel filter
system
Check the injection timing
Check the injection spray
condition
Check the lube
oil level
Replace the
Lubricating
lube oil
system
Replace the
lube oil filter.
Seawater outlet
Check coolant level
Check the impeller of the
Cooling
seawater pump
system
Replace the fresh water
Clean and check the water
passages
Wash turbocharger blower
Air intake
Clean the exhaust/water mixing
and
elbow
exhaust
Clean air cleaner
system
Diaphragm assembly inspection
: User-maintenance
Before
Item
starting
Crankcase
Marine gear
Crankcase
Marine gear
Engine
Marine gear
(During
operation)
When long life coolant of the specified type is used, the
replacement period of two years can be obtained.
: Parts replacement
*2 *2
Initial Every
50hrs. or 50hrs. or
one month one month
Every year
52
: Shop-inspection
*2 *2 *2
Every Every Every
250 hrs. or 500 hrs. or 1000 hrs. or
one year 2 years 4 years
*
1
*