Onan MJA Series Service Manual page 11

9
2. PERIODIC SERVICE CHART
Use the following chart as a guide to servicing requirements. Remem­
ber, neglect of routine servicing could cause plant failure when it's
urgently needed.
The chart is based on units operating under favorable conditions - pro­
per installation, recommended fuel and oil normal load... If the operat­
ing conditions are unfavorable, adjust the service periods accordingly.
PERIODIC SERVICE CHART
SERVICE
AFTER EACH CYCLE OF INDICATED
THESE
HSJURS
SEE
ITEMS 8 100
200
500
lOOO
5000
SECTION
Inspect Plant Generally
x
Check Fuel Supply
x
3 2.1
Check Oil Level
x
3.5.1
Clean Governor Linkilge.
I
it
3.4.1
Service Air Cleaner (Silencer)
xt
3.2.6
Change Crankcase Oil
"'
x
3.5.1
Clean Crankcase Breather x
3.5.7
C,ean and Adiust Spark Plugs'
x
....
­
_3.~
Check Breaker Paints
x
3.3.2
3.3.3
.
_ .
f--..
3.3.4
Check Battery Electrolyte
Level
x
Empty Fuel Sediment Bowl x
3.2.2
Check Valve .Clearance
•
I··~
Inspect Generator Brushes x
4.2.1
5.1.1
Inspect Water Pump Impeller
3:~
(Neoprene)
x~
f--.. -
3.1.3.2
Crean Build-up Relay Contact
J02SX MagIleciter Onlv)
x
4.2
Replace Oil Filter
~
l(
3.5.6
Clean Carburetor
x 3.2.5
Clean Rocker Box Oil Line
Holes
-I-.
x
. . ­
_ 3.5.4
, Clean Combustion Chamber x
3.2.1
3.7.1
...
­
Grind Valves
x
3.7.4
Clean Generating Plant
x
Complete Reconditioning
x
t
Service more often under extreme dust conditions.
"' li
engine is operating in extremely low temperature; for short operating periods;
with highly lea!=led gaSOline; or in extremes of dUst and dirt,
100 hours instead
of
every 200 hours.
then change oil every
. .
.oL
Change
tlJe
filter more often
if,
because of freezing temperatures or extreme dUst
conditions, the oil becomes
50
black and dirty the markings on the level indicator
can't be seen through the
Oil.
• Tighten head bolts and adjust valve clearance after £irst .~O hOurs on anew or
overhauled engine.