|Item Weight||44.1 pounds|
|Product Dimensions||19.3 x 11 x 17.9 inches|
|Item model number||EF2000ISV2|
|Is Discontinued By Manufacturer||No|
|Manufacturer Part Number||EF2000ISV2|
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Yamaha EF2000iSv2, 1600 Running Watts/2000 Starting Watts, Gas Powered Portable Inverter,Blue
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- 1600 watt rated AC output, 2000 watt maximum AC output, 13.3/16.7 amps @ 120V
- Super-quiet muffler with USFS-approved spark arrestor - 51.5 dBA at 1/4 load
- Smart Throttle varies engine speed based on load - improves fuel economy and reduces noise
- Inverter system with Pulse Width Modulation (PWM) control
- CARB Compliant
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Yamaha 1600 Running Watts/2000 Starting Watts Gas Powered Portable Inverter, Blue. Fuel Type - Unleaded Regular
Powerful, portable, and efficient, the Yamaha EF2000iS Gas-Powered Portable Inverter delivers maximum electrical output without sacrificing portability. Thanks to its innovative inverter system, the generator is able to generate up to 2,000 watts of clean AC power. It can run up to 10.5 hours continuously without refueling and uses premium technologies to maximize fuel efficiency.
From the manufacturer
Upgraded, Power-Packed, Quiet and Lightweight
Yamaha's EF2000iSv2 inverter generator quietly powers a wider range of applications for an extended time, while still portable and retro-cool. The completely new controller with advanced programming gives the EF2000iSv2 the ability to power a much wider range of applications than previous generation EF2000iS. At less than 45 pounds, it is lightweight, very compact (2.2 cu.ft.) which makes it easy to store and transport.
Clean, high quality power
The Yamaha EF2000iSv2 Inverter generator supplies clean, high quality power. The EF2000iSV2 – with its inverter system – features Pulse Width Modulation (PWM) so voltage stability is within ± 1%, and frequency stability is ± 0.1 HZ. Its pure sine wave is as clean as or cleaner than public utilities power.
New controller powers more tasks
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 power a much wider range of applications than previous generation EF2000iS.
Long Run Time
The EF2000iSv2 features Smart Throttle, a load sensing rpm control that allows greater fuel efficiency and noise reduction by automatically adjusting engine speed to match the load. It will run up to 10.5 hours at ¼ rated load on a tank of gas.
Twin Tech Parallel Generator Operation
If you need extra power the EF2000iSv2 has you covered—a convenient parallel function lets you connect two generators to deliver up to 30 amps. The EF2000iSv2 may be connected in parallel with an earlier model Yamaha EF2000iS.
Note: Requires Twin Tech Cable and 2nd generator, not included.
The EF2000iSv2 is fitted with Yamaha’s most technologically sophisticated muffler with USFS-approved spark arrestor. 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 – ¼ rated to rated load). Rubber vibration isolation feet smooth operation and reduce noise.
An Ounce of Prevention...
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. Electrical overload breaker — Prevents generator damage in case of overload.
Smart Throttle varies engine speed based on load — Improves fuel economy and reduces noise. Runs up to 10.5 hours at ¼ rated load on a tank of gas.
Fuel Gauge & Gasoline petcock
See fuel gauge at-a-glance. Gasoline petcock lets you shut off the gas to run the carb dry for storage and helps prevent stale gas problems.
Efficient, reliable, powerful providing long life and excellent heat dissipation - OHV engine includes steel camshaft and valve train components, cast iron cylinder liner.
50 State, Clean Emissions
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.
Auto-decompression system — Reduces compression for easier starting. Auto warm-up – Increases engine speed during cold starts to handle high power demand appliances right away.
Centralized Control, AC/DC out
Easy access to controls and fuel gauge allows fuel level to be seen at-a-glance. Includes two 120V AC outlets and one DC Outlet — 8A 12V outlet for charging batteries (cables included).
|Rated / Maximum AC Output||1600 watts / 2000 watts|
|Rated / Maximum AC Current||13.3 / 16.7 amps @ 120V|
|Engine||79cc OHV, air-cooled, single cylinder, 4-stroke|
|Weight / Dimensions: Length x Width x Height||44.1 pounds / 19.3 x 11.0 x 17.9 inches|
|Fuel Tank Capacity||1.1 gallons|
|Continuous Operation at 1/4 Rated Load||10.5 hours|
|Noise Level||51.5 - 61 dBA|
|Limited Warranty||3 years|
Top reviews from the United States
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- Brand name: yes like Honda, it's a brand name, so is the third party 500$ gens, but this brandname is held to a high standard with Yamaha motor sports engines. Which relates to customer service. Try getting warranty repairs on the 500 generator you bought.
- Fuel Gauge: really Honda? 1k and you can't put a fuel gauge on the thing, the Yamaha has a simple gauge to tell fuel levels, EXTREMELY useful.
- Turning the fuel line on and off, big for me, you can turn off the fuel line and let the carb run try without having to worry about clogging up injectors.. You can have fuel in it and have it ready to go on a moments notice, the Honda, you have to worry about the clogging and whatnot, to burn the fuel off means you have to either empty the tank of gas (pain in the butt) or run it all dry. No thanks.
- Comes with the car AC cables, Honda doesn't...
So many good comments and experiences written about already.
For the $750-1000 range, this is a slightly better value, quality, economy, noise rating than the Honda I feel - and the Hondas are very good.
And, if you're ready to buy a quality generator that starts every time - and is proven, this is what you'll pay, so "cheaper" $300-500 units - can't really be compared in my opinion. Buy the cheaper ones in a pinch if you must, but you're in the "cheap generator/inferior quality of parts" crap shoot .. The "saved $300-500" isn't something to be proud of when the generator breaks 1 out of 5 times in a real emergency.
Some nice features of the Yamaha have already been mentioned - my favorite are the fuel shutoff + ECO mode that let's me sometimes get 6-8hrs out of a tank. During an outage, fuel economy is important, and the little Yamaha is one of the best. (to compare, a typical 4000-5500W "wheel barrel" Home Depot generator (non-inverter) can burn 0.5-1 gallons PER HOUR. Something to think about when you only need it for the fridge (800-1200 watts) + 2-3 lights.
Like any other generator with a carburetor, keep Stabil in the gas and start it occasionally and run it dry if not being used for a length of time. When a small carb gets gummed up from sitting, startup and operation is impaired.
We've all likely experienced the "small engine sitting too long" issue - when our lawn mowers/snow blowers throttle "hunts" for 15-20 minutes until the garbage is cleaned out.
This is a good little unit. Keep the machine maintained and fuel stabilizer in it, and occasional oil changes, and it will last for years. Mine is a 2011 unit and it still runs fine.
MY USAGE (if you're interested)
My use was to have partial house electricity during short-middle range power outages. 2000W was about the smallest unit you'd want for this purpose.
For power outage usage, be aware the wattage of your appliances - and how you want to use the generator - ahead of time.. 2000W isn't much, and fuel economy was important for me in case of really long outages (days) in winter. A 5 gal gas can could easily get 3-5 days or more out of the Yamaha with sporadic usage (see "MY USAGE" section)
During winter, having HEAT is important. Without electricity, my "modern" *natural gas furnace* - is inoperable - even though it only needed 5v to light the burner and maybe 300W for the fan.
(thanks modern electronic technology vs simple thermocouple switch + unit is "hardwired" internally into the house).
Not everyone has natural gas (or a fireplace/stove for that matter).
So, in my case, I had 2 needs during winter.
1) HEAT (furnace)
2) Refrigerator (1200 watt startup)
NOTE: In a pinch, in winter, you can always throw perishable food in a steel box in the snow or in your truck or car.. You need something that won't attract animals.
3) A few lights.
So, for (1) HEAT and (2) - I had an electrician:
Wire up my furnace as a "plug-in" appliance (like a refrigerator with a plug vs hardwired)..
Electrician installed a "Generator-only" circuit - with a 30 AMP (outdoor) power inlet box to plug in the Yamaha generator (cable needed). This way, we wouldn't have to run extension cords through windows. When power was out, simply unplug the furnace from house power (isolated) and plug it into the "generator-only" circuit (~~300W), the rest of the 2000W could be used by (b).
Install wiring/generator-only jack upstairs (where we'd likely use it) wired to the "generator-only" circuit that was part of (a). The single "generator-only" jack would feed my refrigerator sporadically - and some other low-wattage appliances (with extension cords of course). With an icebox using 1200 watt startup (old style refrigerator), I could make tradeoffs unplugging appliances (heat vs 2-3 hours running refrigerator - long enough to keep food cold), while still being able to get 8hrs+/gal of gas...
The nice thing about a "pull start" over a whole house generator is I can choose when to turn it off and save fuel. If during the day, it goes up to 55 degrees I can leave it on long enough to get fridge cold, then shut it off for 3 hours to conserve fuel if no one is home. (icebox will stay cold enough until I restart generator)
This "cheap", partial house power/ setup worked well for me with my 2000W Yamaha for many years.
UPDATE: 9/2019 - I later went with a "whole house" Kohler Natural Gas generator - basically a Kohler 2-cylinder / 18HP (basically "law tractor") motor. It's not as fuel efficient as a Yamaha, and we have no control over constant running cycle or any "eco mode" (to reduce noise during the night - lower electricity usage).
Most whole house generators run at (constant) 3600RPM always. Still keep the Yamaha though as a backup
13.5k A/C with thermostat set at 75,
Stereo system on,
Dining room & bedroom lights on.
84 degrees/81% humidity at Start,
78 degrees/74% humidity at Shutdown.
Did this a week or so ago with 98 degree/90%+ humidity and got 5:25hr (used full tank) with a/c set at 70 degrees intentionally so a/c would never cycle off at all throughout. Wanted to load test.
Overall, small, lightweight and incredibly easy use: easy to pick-up and move around, starts instantly (even brand new, both each out of the crate started on the first gentle pull), and they really are quiet, all things considered. Substantially more quiet than my 5k portable house generator (used only for hurricane preparedness). Very impressed and pleased with first 10 hours of engine break-in usage.
I was also pleasantly surprised when I received the generators that even though I had ordered the EF2000iS version, I received the latest and greatest iSV2 (version 2) model. Thank you Amazon!!
I will update more as I get more use of these dual units. They will be powering an RV, so many hours of usage is planned.