Doosan AD158TI, Руководство по эксплуатации и техническому обслуживанию

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Commissioning and operation - 26 -
3.5. Check after Initial 50 Hours Operation.
To insure your continued boating enjoyment, you should check as follows :
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Change engine oil and oil filter cartridge.
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Change fuel filter cartridge.
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Check coolant level.
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Check the tension of all drive belts.
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Check all engine mounts screws for tightness.
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Check for any deficiencies, malfunctions, signs of abuse, etc. Correction of any problems at this time will
prevent the worsening of a minor problem and help ensure a trouble free boating season.
Note :
This is an opportune time to discuss with your dealer any questions about your boat and stern drive
unit which may have arisen after the first 50 hours of operation and establish a routine preventive
maintenance schedule.
3.6. Operation In Winter
Pay special attention to the freezing of cooling water and the viscosity of lubricating oil.
3.6.1. Prevention against the freeze of cooling water
When not using anti-freeze, completely discharge the whole cooling water after engine running. The freeze
of cooling water causes the fatal damages of the engine. Because the antifreeze is used to prevent cooling
water from freeze and corrosion, it is always to be filled with the anti-freeze 35 ~ 40% of the whole coolant.
3.6.2. Prevention against excessive cooling
Drop of thermal efficiency caused by excessive cooling increases fuel consumption. Therefore should pre-
vent the engine from excessive cooling. If the temperature of coolant does not reach to normal condition (71
~ 85°C) after continuous operation, examine the thermostat or the other cooling lines.
3.6.3. Lubricating oil
As cold weather leads to the rise of oil viscosity, engine speed becomes unstable after starting. Therefore the
lubricating oil for winter (SAE 15W40 or 10W30) should be used to prevent this unstableness. Refer to
″
4.4.
Lubricating system
″
.