Northern Lights O843K Operator's Manual - page 4
O843K 05/03
Introduction
2
Unit Identification
Servicing of marine engines and generator sets presents
unique problems. In many cases boats cannot be moved
to a repair facility. Marine engines cannot be compared
to the servicing of automobiles, trucks or even farm
equipment. Failures often occur in remote areas far
from competent assistance. Marine engines are taxed
far more severely than auto or truck engines; therefore,
maintenance schedules must be adhered to more
strictly.
Failures can begin with minor problems that are
overlooked and become amplified when not corrected
during routine maintenance.
As operator, it is your obligation to learn about your
equipment and its proper maintenance. This is not a
comprehensive technical service manual. Nor will it
make the reader into an expert mechanic. Its aim is to
aid you in maintaining your unit properly.
J / K
MODELS INCLUDED
This manual covers the operating instructions for:
M843JK marine generator sets,
M843NK marine generator sets, and
NL843NK industrial generator sets.
Fill in the model number of your unit in the blank space provided.
This will give you a reference whenever service or maintenance is required:
Additional letter
designates series
within model number
+
+
Northern Lights marine diesel generator set with
a J-series 843 engine and a PX-300K generator end
with an AVR.
M / NL
843
=
M843JK
Northern Lights marine diesel generator set with
an N-series 843 engine and a PX-300K generator
end.
=
M843NK
Northern Lights industrial generator set with an N-
series 843 engine, PX-300K generator with an AVR,
and a radiator.
=
NL843NK
Model number of engine block
Bore
Cylinders
84 mm
3
M - Northern Lights marine generator set
NL - Northern Lights industrial generator set
Model Numbers
Model numbers give the unit's application, block model, aspiration, and RPM:
My Northern Lights generator set MODEL number is: