2. Inspection and adjustment
46
2.6 Adjusting operation
Perform the adjusting operation for an engine as follows after the maintenance job:
2.6.1 Preliminary precautions
Before making a test run, make sure of the following points.
(1) Warm the engine up.
(2) Remove any precipitation from the F.O. filter. water separator, and F.O. tank.
(3) Use only lube oil recommended by Yanmar.
(4) Be sure to add Long Life Coolant Antifreeze (LLC) to cooling fresh water.
(5) Provide good ventilation in the engine room.
2.6.2 Adjusting operation procedure
1) Supply the fuel oil, lubricating oil and cooling water.
Note:
Check the levels of the lube oil and cooling water again after test running (for about 10 minutes) and
add as required.
2) Start the engine, and carry out idling at a low speed (700 to 900 min
-1
) for a few minutes.
3) Run in the engine for about five minutes at the rated speed (no-load). Check any water, fuel or lube
oil leakage and existence of abnormal vibration or noise. Also check the oil pressure, cooling water
temperature and exhaust gas color.
4) Adjust the no-load minimum and maximum speed. (Refer to 2.3.)
5) Perform loaded operation as required.
