Engine Lubrication System
- Annual oil and filter change
- Inspection for evidence of dilution/contamination
- Inspection for leaks
- Operating temperature
- Oil pressure check

Annual oil sample analysis Fuel System
- Fuel supply check (quantity, quality)
- Fuel supply manifold inspection
- Annual filter changes
- Transfer pump and day tank operational check
- Engine fuel line, pump and filter inspection
- Governor actuator inspection and lubrication
- Fuel pressure check (if possible)
- Condensate draining (if possible)

Exhaust System
- Exhaust pipe and flex inspection
- Muffler support inspection
- Turbocharger clamp and bracket inspection
- Muffler drain (if possible)

Generator Mechanical
- Mounting bolt inspection and sounding
- Fan guard and air inlet screen inspection
- Bearing inspection and lubrication (if possible)
- Mechanical connection inspection

Controls
- Auto start and remote control operation check
- AC and engine instrument operation and accuracy check
- Generator-set-associated indicator light and alarm operational check
- Relay and contactor inspection
- Linkage and load cable check
- Control panel wire inspection

Air System
- Louver, ductwork and air filter inspection
- Turbo outlet hose and pipe inspection
- Air-box damper operating mechanism inspection and lubrication
- Crankcase breather and air-box drain service, as required

Cooling System
- Coolant level and temperature check
- Freeze protection check
- Fan shroud, guard and bracket inspection
- Radiator core and fan drive belt inspection
- Idler and fan drive bearing inspection and lubrication
- Coolant hose and pipe inspection

Engine Electrical System
- Starter cable, wire and connector inspection
- Starting battery float voltage and electrolyte level check
- Charger check for proper operation and output
- Starting battery voltage load test
- Electrical control and sensor wire termination inspection
- Block heater, control thermostats and oil pressure disconnect switch operational check
- Ignition system inspection

Electrical
- No load and full load volt check (during load test)
- Exciter assembly and stator inspection
- Cable and wire generator termination inspection
- Rotating rectifier and surge suppressor inspection
- End bell enclosure inspection for cleanliness and device interference with rotating assembly

Switchgear
- Transfer switch inspection for cleanliness and integrity
- Inspection for signs of overheating and wear