Yanmar 4JH4E - 2 Inspection and Adjustment; Periodic Maintenance Schedule

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