4. Commissioning and Operation
4.1. Preparation
At the time of initial commissioning of a new or overhauled engine make sure to have observed
the ÒTechnical Information for the installation DAEWOO generator enginesÓ.
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Oil filler neck on cylinder head cover
Before daily starting of the engine, check the fuel, coolant and oil level, replenish if necessary.
The notches in the dipstick indicate the highest and lowest permissible oil levels
The oil required in the sump is specified in the ÒEngine SpecificationÓ.
Note : The oil required to fill the oil fillers and pipes depends upon the engine and use and
must be determined individually at the time of initial commissioning. (Make the Max
and Min. marks of the determined quantity on the oil level gauge.)
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Cleanliness
Ensure outmost cleanliness when handling fuels, lubricants and coolants.
4.2. Breaking-in
4.2.1. Operation of a new engine (Break-In)
Because the sliding surfaces of a new engine are not lapped enough, the oil film can be
destroyed easily by overload or overspeed and the engine life-time may be shortened.
Therefore the following things must be obeyed by all means.
Up to the first 50 hours
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Engine should be run at fast idling until the temperature of the engine becomes normal oper-
ating condition.
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Overload or continuous high speed operation should be avoided.
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High speed operation with no load should be prevented.
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Abrupt start and stop of the engine should be avoided.
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Engine speed must be under 70% of its maximum speed.
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Maintenance and inspection must be accomplished thoroughly.
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