1-1
1. Introduction
This is the service manual for the generator set
(genset) models listed on the front cover. Read and
carefully observe all of the instructions and precau-
tions in this manual.
WARNING
Improper service or replacement of
parts can lead to severe personal injury or death
and to damage to equipment and property. Ser-
vice personnel must be trained and experienced
to perform electrical and mechanical service.
WARNING
Unauthorized modifications or re-
placement of fuel, exhaust, air intake or speed
control system components that affect engine
emissions are prohibited by law in the State of
California.
See the Installation Manual for important recom-
mendations concerning the installation and for a list
of the installation codes and standards for safety
which may be applicable.
See the Parts Manual for part identification numbers
and required quantities and for exploded views of
the genset subassemblies. Genuine Onan re-
placement parts are recommended for best results.
When contacting Onan for parts and product infor-
mation, be ready to provide the model and serial
numbers on the genset nameplate. Figure 7-1 illus-
trates the nameplate and its location. The numbers
in the gray boxes are typical model and serial num-
bers. Every character in these numbers is signifi-
cant. (The last character of the model number is the
specification letter, which is important for obtaining
the right parts.)
D000012345
7HGJAA–97
A
[THE ENGINE FAMILY DESIGNATION, ENGINE DIS-
PLACEMENT AND STATEMENT OF COMPLIANCE
WITH THE APPLICABLE EPA AND / OR CALIFOR-
NIA EMISSIONS REGULATIONS APPEAR IN THIS
BLOCK ON THE ACTUAL NAMEPLATE ON THE
GENSET.]
FIGURE 1-1. TYPICAL NAMEPLATE
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