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2019 Yamaha EF2000iSv2





Power‑packed, Quiet And Lightweight

Quietly powers a wider range of applications for an extended time, while still portable and retro‑cool.

Top Features
  • power a much wider range of applications: The EF2000iSv2 incorporates a completely new controller with advanced programming resulting in improved output characteristics between 1600w-2000w operation ranges. The addition of the new programming allows the EF2000iSv2 the ability to
  • extra power: If you need
  • The EF2000iSv2 is powerful, portable and retro-modern and delivers maximum output with minimum effort. It weighs a mere 44 pounds, making it easy to transport. Super Light weight for 2000 watts.
  • The EF2000iSv2 is fitted with Yamaha's most technologically sophisticated muffler. It's So quiet that you can have a conversation near one and may not realize it is running. (51.5 dBA to 61 dBA - 1/4 rated to rated load).
  • compact: It is very
  • Long Run Time: - The EF2000iSv2 features
  • prevent stale gas problems: Gasoline petcock lets you shut off the gas to run the carb dry for storage and helps
  • Inverter generator: The Yamaha EF2000iSv2
  • Fuel gauge: allows fuel level to be seen at-a-glance.
  • longest emission engine durability ratings: Yamaha generators have the
Features Features
  • Light weight: — Easy transport
  • Twin Tech (Parallel generator operation): - The EF2000iSv2 can be operated in parallel to deliver 25 AMPs of rated power.
  • Compact: — 2.2 cu.ft. size is easy to store and transport
  • Parallel generator operation: - The EF2000iSv2 may be connected in parallel with an earlier model Yamaha EF2000iS.*
  • New controller with advanced programming: - The addition of the new programming allows the EF2000iSv2 the ability to power a much wider range of applications than previous generation EF2000iS.
  • Gasoline petcock: - lets you shut off the gas to run the carb dry for storage and helps prevent stale gas problems.
  • Smart Throttle varies engine speed based on load: — Improves fuel economy and reduces noise. Runs up to 10.5 hours at 1/4 rated load on a tank of gas.
  • Fuel gauge: — See fuel gauge at-a-glance
  • OHV engine with cast iron cylinder liner: — Efficient, reliable, powerful providing long life and excellent heat dissipation
  • Inverter system with Pulse Width Modulation (PWM) control: — Produces a pure sine wave to run products with built-in microcomputers or microcomputer-controlled electric tools
  • OHV engine: — Includes steel camshaft and valve train components
  • EPA & CARB Emission Engine Durability Rating: — Yamaha generators have the longest emission engine durability ratings issued by the Environmental Protection Agency and the California Air Resources Board
  • Oil Watch Warning system: — Prevents engine damage caused by low oil, avoiding costly repairs and minimizing down time, adding customer confidence and peace of mind
  • Auto-decompression system: — Reduces compression for easier starting
  • Comfortable grip handle: — Easy portability and storage
  • Electrical overload breaker: — Prevents generator damage in case of overload
  • DC Outlet: — 8A 12V outlet for charging batteries (cables included)
  • Centralized controls: — Easy access to controls
  • Rubber vibration isolation feet: — Absorbing feet for smooth operation and noise reduction
Available Accessories & Options Features
  • TwinTech Cable: — Connect two EF2000iS generators in-line with a Twin Tech cable for rated output 25 AMPs of power. Includes standard 30 amp twist-lock receptacle. For RV use, the RV Adapter Kit is required.
  • Sidewinder Parallel Power Cables: — Cables allows user to combine the power of two Yamaha EF2000iS Inverter generators. Compatibility with a standard 30A RV cord, rugged over-braided cable design, and a handy Velcro mounting system.
  • RV Adapter Kit: - The RV Adapter Kit has a 30A receptacle for RV use. Required if connecting the Twin Tech Cable to RV.
  • Accessory Cover: — Added protection, includes a storage pocket for Owner's manual, tool kit, and battery charging cables
  • Yamaha Extended Service: - Additional 1, 2 or 3 years of Y.E.S. is available
  • Accessory Hour Meter/Tachometer: — Keep track of running time for service needs
  • Am/Watt Appliance Load Tester: — Gives quick, accurate readout of watts or amps used by 120 volt AC electrical devices
  • *A second Yamaha EF2000iSv2 is recommended to use the full capabilities of this model.
  • For Accessories: , visit
  • Type: Inverter
  • Maximum AC Output: 2000 watts
  • Rated / Maximum AC Current: 13.3 / 16.7 amps @ 120V
  • Rated AC Output: 1600 watts
  • Engine: OHV, air-cooled, single cylinder, 4-stroke
  • Displacement: 79cc
  • L x W x H: 19.3 x 11.0 x 17.9 in.
  • DC Output: 8 amps @ 12V
  • Dry Weight: 44.1 lb.
  • Fuel Tank Capacity: 1.1 gal.
  • Continuous Operation at 1/4 Rated Load: 10.5 hrs
  • Noise Level (1/4 Load - Rated Load): 51.5 - 61 dBA
  • Warranty: 3 Years Limited Warranty
Price and specifications subject to change without notice. Please read your Owner's Manual and the product warning labels before operation.



Engine Type
OHV, air-cooled, single cylinder, 4-stroke


19.3 in.
11.0 in.
17.9 in.
44.1 lb.


AC Output
DC Output
8 amps @ 12V
Fuel Tank Capacity
1.1 gal.
Noise Level
51.5 - 61 dBA
Run Time
10.5 hrs

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