Yanmar 3YM30, Service Manual

Page: 35 / 231

2. Inspection and adjustment
15R1
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
100 hrs. or
six months
*2
Every
150 hrs. or
one year
*2
Every
250 hrs. or
one year
*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 filter
{
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
Å Å
Sail drive
Å Å
Replace the engine lube oil
filter.
Å Å
Cooling
system
Seawater outlet
{
During
operation
Check cooling water level
{
Check the impeller of the
cooling water pump
(seawater pump)
{
Å
Replace the fresh water
coolant
Every year
When long life coolant of a specified type is used, replacement
period of two years can be obtained.
Clean & check the water
passages
z
*1
For EPA requirements see also 1.5 in chapter 1.
*2
Whichever comes first