Yamaha EF1000IS Gasoline 900 Watt 120V Single Phase Portable Inverter Generator

- Item #: BCI2121323
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Yamaha EF1000iS: 900 Watt Gasoline Portable Inverter Generator

Product Features:

  • 900 running watts with a surge capacity of 1,000 watts ensures that you have the energy you need when you need it
  • 7.5 Amps @ 120 Volts (Single Phase)
  • Covered under 3 Year Residential Warranty / 2 Year Commercial Warranty
  • Outlets: (2x) 5-20R 20A 120V, (1x) 12VDC


  • Yamaha OHV Engine: This single cylinder, overhead valve commercial grade engine has a high compression ratio and aluminum push rods for increased fuel efficiency and reduced valve clearance
  • Engine Displacement: 50cc
  • Engine covered under 3 Year Residential / 2 Year Commercial Warranty
  • Recoil Pull Start System
  • Includes Low Oil Shutdown

Product Technologies / Benefits:

  • Clean, High Quality Power: The inverter system with Pulse Width Modulation keeps voltage within ±1% and frequency ±0.1 Hz
  • Smart Throttle: Load sensing rpm control that adjusts engine speed to match the load, increasing fuel efficiency and reducing noise

Product Specifications:

  • Overall Height: 14.9"
  • Overall Length: 17.7"
  • Overall Width: 9.4"
  • Product Dry Weight: 27.9 lbs
  • Fuel Tank: 0.66 Gallons
  • Run Time (1/4 Load): 12 Hours

Additional Yamaha Links

Our SKU: Yamaha EF1000iS

This product is listed under the following manufacturer number(s):

*Denotes a finish or option that has been discontinued

Yamaha EF1000IS Product Specifications

Owner's Manual
Specification Sheet
Alternator Type Inverter
Amperage 8
Approved for Commercial Use Yes
Auto Voltage Regulation Yes
CARB approved Yes
Cast Iron Sleeve Yes
Commercial Warranty 2 Year Limited
Cooling System Air Cooled
Electric Start No
Engine Brand Yamaha
Engine Size 50
Frequency 60
Fuel Tank Material Plastic
Fuel Type Gasoline
Generator Style Portable
Grade Recreational
Height 14.9
Hour Meter Included No
Idle Control Yes
Inverter Yes
Inverter Engine Yes
Length 17.7
Lifting Eye No
Low Oil Alert Yes
Made in America No
Manufacturer Warranty 3 Year
Noise Level 47
Number of Cylinders 1
On Board Fuel Gauge No
Outdoor Sound Level (dba) 57
Product Weight 27.9
RPM (High) 3000
Rated Amps 8 Amps @ 120 Volts (Single Phase)
Run Time 50% Load 8
Run Watts 900
Starting System Recoil Start
Surge Watts 1000
Tank Size 0.66
Transfer Switch Included No
Voltage 120
Voltage Meter No
Wattage 900
Width 9.4

Installation Resource Center

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Yamaha EF1000iS Reviews

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