Table Of Contents - Onan NHC Series Operator's/Service Manual And Parts Catalog

G E N E R A L [NFORMATION
This manual contains installation and operation i n -
structions as well as information required for proper
maintenance, adjustment and repair of the engine.
Since the first and most important part of repair work
is the c o r r e c t diagnosis of the trouble, a
t r o u b l e s h o o t i n g chart is included.
Study and f o l l o w the instructions carefully. Proper
service and maintenance will result in longer engine
life and better performance.
How to interpret MODEL and SPEC NO.
N H C - MS / 123 A
1
3 4
1. Factory code for general identification purposes.
2. Specific T y p e :
S - M A N U A L starting
M S - E L E C T R I C starting
3. Factory c o d e for optional equipment s u p p l i e d .
4. Specification (Spec Letter) advances with factory
p r o d u c t i o n m o d i f i c a t i o n .
TABLE OF CONTENTS
T I T L E P A G E
General I n f o r m a t i o n 1
Safety Precautions 2
Specifications 3
Dimensions and Clearances 4
Assembly T o r q u e s and Special Tools 5
Engine T r o u b l e s h o o t i n g 6
Installation 7
Operation 1 1
Periodic M a i n t e n a n c e 1 3
Fuel System 1 6
G o v e r n o r System 2 2
I g n i t i o n System 2 4
Battery Charging System 27
Starting System 3 0
Engine Disassembly . . , ' 3 5
Parts Catalog 4 3
Engine W i r i n g Diagrams 66
MANUFACTURER'S GENERAL
WARRANTY
Manufaciurcr o l c r J i lo ihc original purcha^r of Goods foi use. ihc followins
warranties, subject l o the nualificaiions indicated:
l.lManufaciurcr » „ r a n i s saiislacioiy performance for a period ot one f 11 year from lhe
dale each product is placed in service, so longas such producl is installed, operated and
serviced in accordance wilh Manufaetuier's written instroctions. I H I.S W A K K A N Y
• IS I N 11EU O F A L I . O T I I E R W A R R A N T I E S . E X P R E S S K U OR I M P L I E D .
I N C L U D I N G FITNESS FOR A P A R T I C U L A R PURPOSE.
IblManufaciurcr's liabilily and purchasers'sole remedy for a failure ofGoods to perform
as warranted, and for any andall olher claims arising o u t o f the purchase and use of the
Goods including negligence on lhe pari of Manufacturer, shall bc limited to the repair
or replacement of Goods returned to Manufacturer's factor,' or one of its Auihori/ed
Service Sialions. iransportation prepaid. The cost of any labor included shall be as
sneciHed in Manufacturer's writien ittstruciions. M A N U F A C T U R E R S H A L L IN
NO E V E N T BE L I A B L E FOR I N C I D E N T A L OR C O N S 6 0 U E N T I A I .
D A M A G E S .
I'lAII claims shall he brought to Manufacturer's aiicntion wilhin T h i n y (JOI days after
discovery that the Goods failed to perform as warranted, hul in no event shall a cla.n
:cepied after one ( I ) year from the date such product is placed in service.
No person is authorired to give any other warranly or to assume any olher liability on
Manufacturer's behalf unless made or assumed in writing by an Officer of
Manufaciurcr..and no person is auihorired lo give any warranty or assume any
liabilities on the Manufaciurcr's behalf unless made or assumed in writing by such
Manufacturer.
IMPORTANT! RETURN W A R R A N T Y C A R D A T T A C H E D TO UNIT.