Servicing Schedule Chart - Northern Lights M843NW3G Operator's Manual

The Servicing Schedule Chart below shows the service schedule required for proper maintenance of your generator
set. More detailed coverage of each Service Point (SP) is listed on the page noted in the 'page' column.
DAILY:
SP1 Check oil level in engine
SP7 Check primary fuel filter
SP10 Check cooling water level
AFTER FIRST 50 HOURS:
SP2/3 Change engine oil and filter
AFTER FIRST 100 HOURS:
SP2/3 Change engine oil and filter
EVERY 100 HOURS:
SP6 Check v-belt tension
SP17 Check electrolyte level in batteries
EVERY 200 HOURS:
SP2/3 Change engine oil and filter
SP4 Check air cleaner
SP18 Check condition of batteries
SERVICE
PAGE OPERATION
POINT
ENGINE:
SP1 16 Check oil level
SP2 16 Change engine oil 1) 4)
SP3 16 Change lube oil filters 1) 4)
SP4 17 Check air cleaner 1)
SP4 17 Change air cleaner 1)
SP5 17 Check V-belt tension 1)
SP6 18 Check valve clearance 1) 2)
FUEL SYSTEM:
SP7 19 Check primary filter (Racor) 2) 3)
SP8 19 Change primary filter element 2) 3)
SP9 19 Change secondary fuel filter 1) 3)
SP10 20 Check injectors 1) 3) 5)
SP11 20 Check fuel injection pump 6)
COOLING SYSTEM:
SP12 22 Check cooling water level
SP13 22 Check and flush cooling system
SP14 23 Check and clean heat exchanger
SP15 23 Change impeller in raw water pump 1) 3)
SP16 23 Check exhaust elbow
ELECTRICAL SYSTEM:
SP17 24 Check electrolyte level in batteries 1)
SP18 24 Check condition of batteries 1)
OUT OF SERVICE:
SP19 24 Winterizing or out-of-service 3)
1) Perform all maintenance every two years at minimum, even if hour level has
not been reached.
2) Consult manufacturer's maintenance schedule, note on chart.
3) Whenever necessary.
4) After first 50 hours, then at 100 hours, then every 200 hours.
Updated 10-3-19

Servicing Schedule Chart

EVERY 500 HOURS:
SP8
SP9
SP15 Change impeller in raw water pump
SP16 Check exhaust elbow
EVERY 1000 HOURS:
SP5
SP12 Check injectors
EVERY 2500 HOURS:
SP13 Check fuel injection pump
SP11 Check and flush cooling system
SP14 Check and clean heat exchanger
After
50
DAILY Hours
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5) Clean injection nozzles every 1500 hours.
6) For EPA emission standards fuel nozzle needs to be
cleaned every 1500 hours, the fuel nozzle and fuel pump
need to be cleaned, adjusted, or repaired every 3000
hours, and the quality guarantee for these parts is 1500
hours or 2 years.
OM843NW3 5/21
15
Change primary fuel filter element
Change secondary fuel filter
Change air cleaner element
After Every Every Every
100 100 200 500
Hours Hours Hours Hours
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Every Every
1000 2500
Hours Hours
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