5. MAINTENANCE & INSPECTION 41
5.2 List of Periodic Inspection Items
Daily and periodic inspections are important to keep the engine in its best condition. The following is a sum-
mary of inspection and servicing items by inspection interval. Periodic inspection intervals should vary
depending on the uses, loads, fuels and lube oils used and handling conditions, and are hard to establish
definitively. The following should be treated as a general standard only.
Section 5.3 gives a detailed explanation of which parts must be inspected and the procedure for doing so for
each interval.
Schedule your own periodic inspection plan according to the operational conditions of your engine and
inspect every item. Neglect of periodic inspection may lead to engine troubles and shorten the life of the
engine.
Inspection and servicing at 1000 hours and thereafter require special knowledge and techniques. Consult
your Yanmar dealer or distributor.
* For EPA requirements see also 5.4 and table on next page.
** Whichever comes first
{
: Check
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: Replace
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: Consult local dealer
System
Item
Before
starting
Initial
50 hrs.
Every
50 hrs. or
monthly**
Every
250 hrs. or
1 year**
Every
500 hrs. or
2 years**
Every
1000 hrs. or
4 years**
Fuel
system
Check the fuel level, and refill
{
Drain the fuel tank
{
{
Drain the fuel filter
{
Replace the fuel filter
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Check the injection timing
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Check the injection spray condition
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*
Lubricating
system
Check the lube oil level
Engine
{
Marine gear
{
Replace the lube oil
Engine
Å
Å
Marine gear
Å
Å
Replace the lube oil filter
Engine
Å
Å
Marine gear
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 is used of a specified type,
are placement period of two years can be obtained.)
Clean & check the water passages
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