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BREAK-IN PERIOD
1. The first 100 hours on a new or reconditioned
engine are critical to its life and performance.
2. Operate the engine under various conditions,
particularly heavy loades with minimal idling, to
help seat engine components properly.
3. Constantly check the engine temperature and oil
pressure.
4. Oil consumption is greater during break-in as
piston rings take time to seat.
5. Break-In Oil Changes: Change engine oil and
filter at 50 hours. Change oil and filter again at
250 hours (consult Lubricants section for oil
recommendation).
BEFORE STARTING
1. Check the water level by removing the pressure
cap from the expansion tank or radiator. In order to
give the cooling water an opportunity to expand, the
level should be about 1 in. (2.5 cm) below the filler
cap sealing surface when the engine is cold.
CAUTION: Use protective clothing and open the filler
cap carefully when the engine is warm to prevent
burns.
2. Check the oil level in the crankcase with the
dipstick. The oil level must be in the waffled area
on the stick. Never allow the level to go below this
area. Always add the same viscosity of oil as is
already in the crankcase.
3. Check the fuel tank level and open any fuel valves.
NOTE: The battery switch must always be kept
ON while the engine is running. If the switch is
turned OFF while the engine is running, the
battery charging regulator could be ruined.
STARTING
1. Hold the Shutdown Bypass-Preheat switch in the ON
position for 10 to 20 seconds before starting a cold
Updated 1-10-13
Operating Procedures
engine. Holding the switch too long can burn out the
glow plugs. This step is not necessary if the engine is
already warm.
2. While holding the Shutdown Bypass-Preheat switch
in the ON position, push the Engine Control switch
to the START position.
3. As soon as the engine starts, release both switches. Do
not crank the starter for more than 20 seconds
consecutively. If the engine fails to start with the first
attempt, be sure that it has stopped completely before
re-engaging.
OPERATING
1. Check oil pressure often. Oil pressure must be
above 15 PSI. The water temperature must be
below 225°F (107°C). Check the AC voltage and
frequency. If these deviate from normal levels, shut
down the generator set and investigate.
1. Let the unit run unloaded for a three to five minute
warm-up period.
2. Add electrical load.
STOPPING
1. Remove electrical load from the generator set.
2. Move the Engine Control switch to the STOP
position momentarily.
SHUTDOWNS AND ALARMS
1. Generator sets have shutdown systems to stop the
engine in the event of high water temperature or low
oil pressure.
Other alarms and shutdowns are available as
optional equipment.
NOTE: Do not rely on your shutdown to the
exclusion of careful gauge monitoring. Watching
your gauges can prevent damage to the unit and
dangerous power losses.
ONL773LW4 5/21
11
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