Onan NHC User Manual

Engine Set-Up
Inspect the engine visually. Check for loose or
missing parts and any damage that may have occurred
in shipment.
a r a i iTiniiJI 0il > fuel ’ and coolant have been
AAWlUllun | drained f rom the engine prior to
shipping from Onan.
BATTERIES
The batteries and battery cables used for starting the
engine should be of sufficient size to provide prompt
starting. Undersized batteries will result in poor
starter operation and a very short starter service life.
A WARNINC I l 9 nition of explosive battery gases
AAWAnrvihHj | can cause severe personal injury.
Do not smoke while servicing batteries.
CRANKCASE OIL RECOMMENDATIONS
Fill crankcase with correct amount of oil. Refer to
SPECIFICATIONS for crankcase capacity. Use oils
meeting the American Petroleum Institute (API) clas¬
sification SE or SE/CC.
A WARM I Mr Crankcase pressure can blow out
aawai-uniinij I hot oil and cause serious burns. Do
NOT check oil while the engine is operating.
Oil Level
Check oil level at least every 8 hours of operation.
Check more frequently on a new or reconditioned
engine as oil consumption is higher until the piston
rings seat properly.
When adding oil between oil changes, it is preferable
to use the same brand, as various brands of oil may
not be compatible together. Refer to MAINTENANCE
section for recommended oil change intervals and
procedures.
FUEL RECOMMENDATIONS
a \a/a dmimp I Ignition of fuel can cause serious
j^WAKIMINU | personal injury or d ea t h by fire or
explosion. Do not permit any flame, cigarette, or
other igniter near the fuel system.
Use clean, fresh, unleaded gasoline. Regular leaded
gasoline may also be used but is not a preferred fuel.
Do not use highly leaded premium gasoline. Use of
unleaded gasoline results in less maintenance.
A CAUTION Do not use 9 asolme de-icers. Gaso-
acau IUIN n n e de-icers can cause internal
damage to carburetor and fuel pump parts. Do not
use fuels containing alcohol concentrations greater
than ten percent. Fuel containing alcohol may cause
poor engine performance and internal engine
damage.
Do not overfill crankcase. Excess oil
causes higher operating tempera¬
tures and may cause foaming.
USE THESE SAE VISCOSITY GRADES
If regular leaded gasoline is used continually, carbon
and lead deposits should be removed from the
cylinder heads as required because of engine power
loss. Unleaded gasoline may be used safely after lead
deposits have been removed.
AiAfADkiiM/’' I Spilled fuel can ignite and cause
[ AWARNING J r/ous p ersona/ injury or death .
Never fill the fuel tank when the engine is running.
EXHAUST SYSTEM
Exhaust products of any internal combustion engine
are toxic and can cause injury, or death if inhaled. All
engine applications, especially those within a confined
area, should be equipped with an exhaust system to
discharge gases to the outside atmosphere.
AWARNINC Inhalation of exhaust gases can
AWMniNiiNu j fe su/f In serious personal injury or
death. Use extreme care during installation to ensure
a tight exhaust system.
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Onan NHC Specifications

General

Brand	Onan
Model	NHC
Category	Engine
Language	English