Key Features
  • The EF2200iST inverter generator boasts a rugged design with a powerful high-output Yamaha MZ80 engine.
  • The EF2200iST is fitted with Yamaha Quiet Technology. Its quiet operation allows you to have a conversation and not even realize it’s running. (57-65 dBA)
  • The EF2200iST offers high power, sophisticated quiet technology, rich features and a rugged design. It weighs a mere 25 kg (44 lb), and with the tri-handle design is easy to transport.
  • If you need more power, the EF2200iST has a convenient Twin Tech parallel function allowing you to connect two EF2200iST units together to provide 30 amps of rated power.
  • A new design makes moving around the campsite or worksite a breeze with the tri-handle design – designed for two people to easily move the unit.
  • Starting and stopping the unit is simple now with a Yamaha Smart Dial.
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Model MZ80, 79 cc, air-cooled (fan assist), OHV, 2-valve, 4-stroke
Starting System Manual Recoil
Ignition Transistor Controlled Ignition (TCI)
Recommended Fuel 87 octane regular gasoline .032L
Additional information

Type Brushless Inverter
Maximum AC Output (watts / amperes) 2,200 W / 18.3 A
Rated AC Output (watts / amperes) – Continuous Use 1,800 W / 15 A
Rated AC Output (watts / amperes) – Continuous Use – "Twinned" Units 3,600 W / 25 A
AC Voltage & Frequency (HZ) 120 V / 60 HZ
Voltage Regulator Inverter (Pulse Width Modulation)
Neutral Floating
DC Output (volts / amp) 12 V / 3 A


L x W x H mm (in) 555 x 300 x 475 mm (21.9 x 11.8 x 18.7")
Dry Weight 25 kg / (55 lb)
Fuel Tank Capacity (L) 4.7 L
Operating Hours (@ 1 / 4 load) 10.5 hrs
Operating Hours (@ rated load) 4.2 hrs
Noise Level (@ 7 metres) 65 dB


Non-Fuse Circuit Breaker System (NFB) Standard
Pilot Lamp (AC output) Standard
Warning Lamps (overload / low oil) Standard
Smart Throttle / Economy Control Standard
Oil Watch Warning System Standard
Oil Pressure Warning System (Engine Shut Down) Standard
Power Meter Standard
Hour Meter Standard
Fuel Level Gauge Standard
Noise Block (enclosed engine design) Standard
Yamaha's Boost Technology (10 second) Standard (60 seconds)
Spark Arrestor Standard


Private Use†
3-years limited
Commercial Use†
3-years limited