Specifications include, but are not limited to: nspect fuel tanks for leaks & damage Check for proper operation Check exhaust system Check transfer switch functionality operation Remove all foreign material & fluids from premises Replace all belts, hoses, clamps & necessary fuel lines with new replacement Replace all bypass caps for each specific generator FLUIDS: Change oil within manufacture specifications for each generator Perform coolant flush & change water coolant Change all filters with recommended factory replacements (oil, air, fuel) Check for any leaks (oil, fuel, coolant, air, etc…) Check battery for cracks, leaks, post corrosion, electrolyte level, voltage, current capacity, cable & connectors ELECTRICAL: Check for proper operation of battery charger & proper charge voltage current Replace defective batteries in exercise timer or defective unit Check generator amps per leg Check generator volts per leg Check generator frequency