The Sumec Firman SPG4000/SPG4000E2 is a robust 3.0kVA (rated) to 3.3kVA (max) portable petrol generator with a 100% copper alternator and 15-liter fuel tank. It features a 4-stroke engine, Automatic Voltage Regulator (AVR) for stable power, and comes in either manual recoil (SPG4000) or key-start (SPG4000E2) versions.