ONL843NW4 11/13
2
Introduction
Unit Identification
Servicing of generator sets presents unique problems. In
many cases boats cannot be moved to a repair facility.
Generators cannot be compared to the servicing of
automobiles, trucks or even farm equipment. Failures
often occur in remote areas far from competent
assistance. Generator sets 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 over-
looked 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.
N, W
MODELS INCLUDED
This manual covers the operating instructions for:
NL843NW4
industrial generator set
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:
N: N engine
W: Winding
+
+
Northern Lights industrial diesel generator set with
an 843N engine and a PX-312K2 generator end, Tier IV.
NL
843
=
NL
843NW4
Your set has three serial numbers:
1
an engine number stamped
on the block,
2
a generator plate, and
3
a generator set plate.
Use the serial number on the generator set plate when ordering parts
or in correspondence. The generator set plate is found on the service
side of the generator and resembles the drawing in
Figure 1
.
Figure 1:
Generator set serial number plate.
Model number of engine block
Bore
Cylinders
84
mm
3
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:
Serial Numbers
