GENERAL
[NFORMATION
This manual contains installation and operation in-
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 correct diagnosis of the trouble, a
troubleshooting chart is included.
Study and follow the instructions carefully. Proper
service and maintenance will result in longer engine
life and better performance.
How to interpret MODEL and SPEC NO.
NHC - MS / 123 A
1
3 4
1.
Factory code for general identification purposes.
2.
Specific Type:
S—MANUAL starting
MS—ELECTRIC starting
3. Factory code for optional equipment supplied.
4.
Specification (Spec Letter) advances with factory
production modification.
TABLE OF CONTENTS
TITLE PAGE
General Information 1
Safety Precautions
2
Specifications 3
Dimensions and Clearances 4
Assembly Torques and Special Tools 5
Engine Troubleshooting 6
Installation
7
Operation
11
Periodic Maintenance
13
Fuel System
16
Governor System
22
Ignition System
24
Battery Charging System 27
Starting System
30
Engine Disassembly .. , '
3
5
Parts Catalog
43
Engine Wiring Diagrams 66
MANUFACTURER'S
GENERAL
WARRANTY
Manufaciurcr olcrJi lo ihc original purcha^r of Goods foi use. ihc followins
warranties, subject lo the nualificaiions indicated:
l.lManufaciurcr »„ranis 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 WAK KAN Y
• IS IN 11EU OF ALI. OTIIER WARRANTIES. EXPRESSKU OR IMPLIED.
INCLUDING FITNESS FOR A PARTICULAR PURPOSE.
IblManufaciurcr's liabilily and purchasers'sole remedy for a failure ofGoods to perform
as warranted, and for any andall olher claims arising outof 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. MANUFACTURER SHALL IN
NO EVENT BE LIABLE FOR INCIDENTAL OR CONS60UENTIAI.
DAMAGES.
I'lAII
claims shall he brought to Manufacturer's aiicntion wilhin Thiny (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
WARRANTY
CARD
ATTACHED
TO
UNIT.
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