Northern Lights LUGGER L6108, Operator'S Manual

Page: 13 / 43

O6108 08/01
CAUTION: Do not remove the water fi ll cap
of an overheated engine. Escaping high
temperature steam can cause severe burns.
c. Allow the engine to cool and then remove
the cap slowly using protective clothing.
d. Make repairs and restart after the tempera-
ture gauge registers below 180
o
F (82
o
C).
e. Watch the temperature gauge regularly and
turn off the unit if the temperature rises
above 205
o
F (96
o
C). Repeat the troubleshoot-
ing process.
3. If the warning or shutdown is activated and the
temperature gauge shows temperature within
normal temperature range:
a. Check the engine crankcase oil level.
b. If the oil level is low, fi ll with recommended
lubricating oil and restart. Watch the oil pres-
sure gauge carefully and shut off the engine
if it does not show a normal reading after a
few seconds of operation.
c. If the oil level is normal, DO NOT restart the
engine. Call your Northern Lights or Lugger
dealer for assistance.
BREAK-IN PERIOD
1. The fi rst 100 hours on a new or reconditioned
engine are critical to its life and performance.
2. Constantly check the engine temperature and oil
pressure gauges.
3. Oil consumption is greater during break-in as
piston rings and cylinder liners take time to seat.
4. Break-In Oil Changes: Change engine oil and
fi lter at 50 hours. Change oil and fi lter again at
100 hours. (See Gear Owner's Manual for break-
in oil change procedures. Consult Lubricants
Section for oil recommendation.)
Operating Instructions
1. Propulsion engines: Never run full speed for
more than 5 minutes during the fi rst 50 hours.
Run engine at 50 to 75% of maximum working
speed for the fi rst 20 hours with as little idling
time as possible. Extended idling can inhibit ring
seating, causing cylinder walls to glaze.
2. Generator Sets: Maintain at least a 75% load
on your set for the fi rst 100 hours. If this is
not possible, maintain no less than a 50% load
to ensure proper seating of the piston rings. Vary
the load to help seat rings.
6. If the proper propeller is used, the engine should
reach its appropriate maximum speed at full
throttle. If at full throttle the maximum speed
is exceeded, then the propeller is too small. If
maximum speed cannot be attained, then the
propeller is too large or bottom growth may be
slowing the boat. (See Prop Chart, page 25.)
7. To Establish Maximum Cruising RPM: Estab-
lish the RPM at full throttle and subtract 200-300
RPM. This will promote engine life and reduce
fuel consumption.
SHUTDOWN PROCEDURES
1. Run for three to fi ve minute cool down period.
a. Propulsion engines in neutral at 1000 RPM,
then return throttle to low idle.
b. Generators unloaded.
2. Push STOP button until the engine has stopped.
Turn key switch to OFF position.
3. Close the sea cock, fuel valves and put the bat-
tery switch in OFF position.
NOTE: Do not turn battery switch to OFF while
engine is running.
SHUTDOWNS AND ALARMS
1. Your unit is fi tted with a system to protect it
from high water temperature or low oil pressure.
a. Generator sets have shutdown systems to
stop the engine. They have no warning
horns.
b. Propulsion engines have warning horns to
sound and warn you of a problem. Remem-
ber: when engine is not running the horn
will sound when key is in the "ON" position
because there is no oil pressure. Propulsion
engines do not have shutdown systems.
c. Other alarms and shutdowns are available as
optional equipment.
NOTE: Do not rely on your warning or shut-
down system to the exclusion of careful gauge
monitoring. Watching your gauges can prevent
damage to the unit and dangerous power losses.
2. Do the following when your warning or shut-
down system is activated.
a. Check the temperature gauge. If the tem-
perature is above 205
o
F (96
o
), shut off the
engine immediately.
b. Use the Trouble Shooting Guide on page 28
to isolate the cause of the overheat.
11
Operating Procedures