2015 Yamaha EF12000DE


2015 Yamaha EF12000DE


Invite your friends over for some electricity. Really, there’s just not much our highest-output gas-powered 120 / 240-volt output generator can’t handle.


  • Dual voltage — Provides the versatility of 120 and 240V operation
  • OHV engine (Overhead Valve) — Precise valve actuation and heavy-duty design offer improved efficiency, increased reliability and quite operation
  • Cast iron cylinder lining — Provides optimal heat dissipation, consistent performance during continuous use and long engine life
  • Oil Watch Warning system — Automatically shuts off before oil level is low and cannot be re-started until oil is added. Prevents engine damage and costly repairs while enhancing long-term durability.
  • Auto Voltage Regulation — Guarantees correct power delivery even with extension corDual Sport, enhances performance, adDual Sport convenience
  • Transistor Controlled Ignition (TCI) — Provides clean, efficient spark that ensures fast, easy starting. Low maintenance, reliable operation.
  • Noise suppressor — Reduces electrical interference with TVs and radios
  • Auto decompression — Automatically “opens” exhaust valve slightly to reduce initial back pressure when starting making manual starting effortless
  • USFS-approved spark arrestor — Offers quiet operation and keeps sparks from exiting exhaust system, reducing chance of fires caused by an errant spark
  • GFCI — Ground Fault Circuit Interrupter shuts off power when it senses a leak to ground to reduce risk of electric shock
  • Fuel gauge — Lets operator monitor how much fuel is left
  • Electric starter — For convenient ease of operation
  • Economy idle — When there is no load on the generator, it automatically returns to idle for improved fuel efficiency and quieter operation
  • AC non-fuse thermal breaker — Protects AC circuit in case of an overload for added durability and peace of mind
  • Wheel kit — Easier service, added value
  • Tool kit — Makes service easier

General Information

Manufacturer Yamaha
Model Year 2015
Model EF12000DE
Model Code EF12000DE
Color Blue


Engine Make OHV, 4-stroke
Bore x Stroke Twin
Displacement 653cc
Cooling Air
Fuel Tank Capacity 11.4 gal.


Weight 327.8 lbs. dry
Height 33.3 in.
Width 29.6 in.
Length 33.3 in.


Continuous Operating Hours 8.9 hrs. @ rated load
AC Frequency Maximum AC Output: 12,000WRated AC Output: 9,500W