Generator 250-Hour Service Procedure

Minor service - diesel generator (stationary and portable)

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250-HOUR (MINOR) SERVICE

Estimated duration: 1 - 2 hours • Frequency: every 250 engine hours

Equipment Details

# Service Action Type Done Notes
Engine
1Drain and replace engine oil (15W-40 CI-4/CK-4)DRAIN/FILL
2Replace engine oil filterREPLACE
3Inspect air filter element - replace if dirtyINSPECT
4Drain fuel/water separator and check for contaminationDRAIN
5Check coolant level and concentrationCHECK
6Inspect radiator and hoses for leaks, damage or swellingINSPECT
7Inspect fan belt tension and conditionINSPECT
Exhaust System
8Check exhaust for smoke and leaksCHECK
9Inspect exhaust flex couplingsINSPECT
Electrical
10Check battery terminals, voltage and electrolyte levelCHECK
11Check control panel operation and alarmsCHECK
12Test emergency stopTEST
13Check earth connectionsCHECK
Load Testing
14Run load bank test (25% / 50% / 75% / 100% rated load)TEST
Mechanical
15Check vibration isolation mountsCHECK
16Inspect fuel lines and connectionsINSPECT
Enclosure / Canopy
17Inspect enclosure/canopy (vents, louvres, latches)INSPECT

Fluid Specifications (General Guide)

SystemType / GradeApprox. Capacity
Engine oil15W-40 CI-4 / CK-48 - 20 L (depending on size)
Coolant50/50 ethylene glycol10 - 25 L (system)
GreaseEP2 lithium complexAs required

Specifications are general guidelines for typical diesel generators (stationary and portable). Always refer to the manufacturer's service manual for your specific make and model. Capacities vary by generator size and configuration.

Parts / Consumables Required

#Part / ConsumablePart NumberQtyReady
1Engine oil (15W-40)8-20 L
2Engine oil filter1
3Air filter element - if replacing1
4Fuel/water separator element1
5EP2 greaseAs req.
6Coolant (pre-mixed or concentrate)As req.
7Rags, drip tray, waste oil container-

Notes / Defects Identified

Next Service Due

Technician

Supervisor / Workshop Manager