Onan NHC Series Operator's/Service Manual And Parts Catalog page 220

SERVICE AND MAINTENANCE
SERVICE THESE ITEMS
AFTER EACH CYCLE OF INDICAl FED HOURS
SERVICE THESE ITEMS
8 50 100
200 500 1000 5000
Inspect Engine Generally
X
Chec k Fuel Supplv
X
Check Oil Level
X
Cle..n Governor Linkti^e
X *
Change Crankcase Oil
xl
X *
Check Breaker Points
X
Clieck Batterv F.lectrolvte L e v e l
X
Clean Fuel Filter
X
Check Spark Plugs
X
Replace Oii Filler
X *
-
Replace Air Cleaner
X *
Remove Dep...sits m Combustion Chamber
X
Check V a h e Clearance
X
Inspect Valves. Grind if Necessary
X
C.»a:: p !el e Reconci u ion mg
X
x • - Pert orr.; -ore often under dusty or extreme cold weather conditions.
y I • Rec.i~,,-ervied Interval in hot weather or heavily loaded natural gas and propane operation.
P E R I O D I C M A I N T E N A N C E S C H E D U L E
Reuu lariv schedu led iMaintenance is the key to lower
operating cos's ..nd longer service life for the unit.
The abov e schedule can be used as a-guide. However,
actual .'peratmg conditions under which a unit is run
should he the determining factor in establishing a
maintenance schedule. When operating in very dusty
or dirty conditions, sexe of the service periods may
have t-i be reduced. Check the condition of the crank-
case o i l . the f i l t e r s , etc. frequently until the proper
service time perinis can be established. When anv
cbn.'r.T.aiiiies occur in operation — unusual noises fron,
engine or accessories, loss of power, overheating, etc.
— contact vour On-ar. Healer.
C R A N K C A S E O I L
ihe o i l capacity is 3-1 '2 U.S. quarts (4 with filter;.
F i l l to the " F U L L " mark on the o i l level indicator.
Use a good quality, detergent o i l with the API
(American Petroleum Institute) designation SE or
ISF CC. • Do not use an oil with the designation CD
unless it is also designated SE and the o i l manufacturer
certities it w i l l perform satisfactorily in gasoline
engines. Ambient temperatures must be the factor for
determining the proper SAE o i l weight.
IMPORTANT: Une low ash content oils .03-.35 percent
by w<.-ight with nuturul gas or propane fueled engines.
NOTE: // oils with these designations are not yet
available, use oil with the API designation MS. MS/DG
or MS 'DM which has passed all the Automotive Manu-
facturer's St-quence Tests and the MIL-L-2104B Tests.
Don't use an oi! with the API designation DS.
When adding o i l between changes, always use the same
brand and weight that is in the crankcase. Various
brands of o i l may not be compatible when mixed
together.
CAP ANO OIL
L E V E L INDICATOR
KEEP OIL
AT THIS L E V E L .
NEVER OPERATE
ENGINE WITH OIL
BELOW THIS L E V E L .
A874
• F U L L
-LOW
ALWAYS REPLACE
CAP TIGHTLY. OR
OIL LEAKAGE MAY
OCCUR.
FIGURE 5. OIL L E V E L INDICATOR
12
902497