| 1 | Record hour meter, working oil pressure, coolant temperature and all parameters of power generated | Monthly |
| 2 | Check operator’s report | Monthly |
| 3 | Check oil and coolant level of engine and fuel level of daily tank | Monthly |
| 4 | Visually inspect for damage, leaks, loose or frayed belts and noises | Monthly |
| 5 | Visually inspect the cooling fan | Monthly |
| 6 | Drain water/sediment from fuel tank, filters and separator | Monthly |
| 7 | Check indication of air filter and clean if required | Monthly |
| 8 | Check all piping, hoses and clamps | Monthly |
| 9 | Check batteries and charger, electrolyte level and state of charge | Monthly |
| 10 | Test the gen-set without load and with load, check all functions. | Monthly |
| 11 | Test ATS functions if necessary | Monthly |
| 12 | Check meters and indication devices. | Monthly |
| 13 | Check all cable and tighten connectors. | Monthly |
| 14 | Check security/ safety system. | Monthly |
| 15 | Clean gen-set and room. | Monthly |
| 16 | Submit check report. | Monthly |
| 17 | Change lub-oil in engine | 250 hrs or 6 months |
| 18 | Change filters: oil filters, fuel filter and coolant filter | 250 hrs or 6 months |
| 19 | Check and clean fuel tank and fuel supply piping system | 250 hrs or 6 months |
| 20 | Check the fuel pump and adjust the pressure pump if required | 250 hrs or 6 months |
| 21 | Clean/ change crankcase breather and air filters | 250 hrs or 6 months |
| 22 | Check coolant additive concentration | 250 hrs or 6 months |
| 23 | Check all electrical connections | 250 hrs or 6 months |
| 24 | Check, clean the ROTO, bearings of alternator (grease the bearings if required) and perform insulation test for the windings | 250 hrs or 6 months |
| 25 | Inspect and readjust thermostat | 250 hrs or 6 months |
| 26 | Check, retighten fly-wheel connector, winding terminals | 250 hrs or 6 months |
| 27 | Adjust crossheads, valves and injectors | 1500 hrs or 1 year |
| 28 | Replace hoses as required | 1500 hrs or 1 year |
| 29 | Check cold thermal start aid | 1500 hrs or 1 year |
| 30 | Clean the gen-set by pressed air | 1500 hrs or 1 year |
| 31 | Tighten all bolts and nuts | 1500 hrs or 1 year |
| 32 | Check crankshaft end clearance | 1500 hrs or 1 year |
| 33 | Check turbo-charger and supporter | 1500 hrs or 1 year |
| 34 | Inspect the following assemblies - Turbo-charger - Vibration damper - Air compressor - Fan hub - Idler pulley assembly - Water pump | 6000 hrs or 3 years |
| 35 | Clean and flush cooling system | 6000 hrs or 3 years |
| 36 | Clean and calibrate injectors and fuel pump | 6000 hrs or 3 years |