Doosan V158TI Operation & Maintenance Manual page 30

3.3.3. Next 8 hours
During the next 8 hours, continue to operate at approximately three-fourths throttle or less (minimum planing
speed). Occasionally reduce throttle to idle speed for a cooling period. During this 8 hours of operation it is
permissible to operate at full throttle for periods of less than two minutes only 2 times.
Note :
Do not run engine at a constant rpm for prolonged periods of time during the break-in
period.
3.3.4. Final 10 hours
During the final 10 hours of break-in, it is permissible to operate at full throttle for five to ten minutes at a time. After
warming engine to operating temperature, momentarily reduce then increase engine speed. Continue to operate
at approximately three-fourths throttle. Occasionally reduce engine speed to idle to provide cooling periods.
Note :
Do not run engine at a constant rpm for prolonged periods of time during the break-in
period.
During the break-in period, be particularly observe as follows :
●
Check engine oil level frequently. Maintain oil level in the safe range, between the "min." and "max."
marks on dipstick.
●
Watch the oil pressure warning lamp. If the lamp blinks whenever the boat attitude (i.e. turning, climbing
on plane, etc.) is changed, it may be the oil pick-up screen is not covered with oil. Check oil dipstick. Add
oil to the oil pan, if required. Do not overfill.
Note :
Oil pressure will rise as RPM increases, and fall as the engine RPM decreases. In addition, cold oil
will generally show higher oil pressure for any specific RPM than hot oil. Both of these conditions
reflect normal engine operation.
●
Watch the engine water temperature gauge and be sure there is proper water circulation. The water tem-
perature gauge needle may fluctuate if water level in expansion tank is too low.
Note :
Failure to follow the break-in procedure will avoid the engine warranty.
When the engine operation become to reach 50 hours in total including the break-in period 20 hours, replace
the engine oil and oil filter to new ones. Fill oil pan with recommended engine oil. Refer to "4.4. Lubricating
System".
Note :
When engine is overheated, do not stop the engine immediately.
Lower the engine load and run the engine and its cooling systems continuously.
Commissioning and operation - 24 -