Product Features
2,000 Watt Maximum AC Output/1,600 Watt Rated AC Output Super-quiet muffler with USFS-approved Spark Arrestor Smart Throttle varies engine speed based on load Inverter system with Pulse Width Modulation (PWM) control CARB Compliant
Product Details
Shipping Weight: 50 pounds Shipping: This item is also available for shipping to select countries outside the U.S.
Shipping Advisory: This item must be shipped separately from other items in your order. Additional shipping charges will not apply.
ASIN: B002RWK9N2
Item model number: EF2000iS
Compact and ergonomic, the EF2000iS is easy to store and transport. View larger. |
 TwinTech technology allows you to hook up two units for added output. View larger. |
Powerful Inverter System Delivers Cleaner Electricity
The EF2000iS is built around an innovative inverter system, which is able to deliver higher-quality, cleaner electricity than competing generators. It produces energy in the form of pure sine waves, which are cleaner and more reliable than most commercial power sources.
In simpler terms, this means that you’ll be able to confidently power delicate machinery without having to worry about the damage caused by unrefined energy. An electrical overload breaker is also included, to prevent generator damage in case of an unexpected overload.
Smart Technologies for Optimal Fuel Efficiency
The EF2000iS is exceptionally fuel efficient, able to run for up to 10.5 hours without refueling when in Economy mode. Its OHV engine runs reliably and dissipates heat efficiently, allowing for both a long life and optimal fuel consumption.
With its Smart Throttle Load feature, the generator is able to dynamically adjust engine speed depending on output, resulting in greater overall fuel efficiency. The generator also features an exclusive dual coil alternator stator, which lowers engine speed and reduces total fuel consumption.
Ergonomic, User-Friendly Design
Weighing 44 pounds, the generator is ultra-portable and features an easy-to-carry design. It has a convenient, centralized control panel, which allows you to easily access all of the generator’s features at the push of a button. It also starts up responsively due to its auto-decompression system, which reduces compression and makes start-up less difficult.
For added convenience, the EF2000iS is able to recharge batteries with its 8A12V DC output, making it ideal for RV, auto, and boat owners. You can even hook up two EF2000iS units for added output, thanks to TwinTech technology. And you won’t have to worry about engine damage due to low oil levels: an oil-watch warning system constantly monitors oil levels and lets you know when an oil change is needed.
Noise Reduction for Quiet Operation
The EF2000iS uses noise reduction technologies to ensure the quietest operation possible. Featuring a special sound-blocking design, the generator has noise-absorbing glass wool construction, which helps dampen noise even during heavy operation. Along with the EF2000iS’ super-quiet muffler and vibration-isolating feet, it helps keep noise to a minimum.
The EF2000iS is backed by a two-year warranty.
Sunday, August 21st 2011 at 3:00 pm |
5.0 out of 5 stars Awesome Quiet Little Inverter-Generator!, June 13, 2010
(REAL NAME) Amazon Verified Purchase(What’s this?)
This review is from: Yamaha EF2000iS 2,000 Watt 79cc OHV 4-Stroke Gas Powered Portable Inverter Generator (CARB Compliant) (Lawn & Patio)
I purchased the EF2000iS 2,000 watt inverter-generator for extended fishing trips for charging 12 volt marine batteries and for running corded power tools in remote areas. At first I wasn’t sure if the 2,000 watt model would be enough power to meet my needs, but I decieded to take a chance with it because of the price, and boy am I glad I did.
It easily powers drills, grinders, skill saws, table saws, sawzalls, and portable cement mixers – pretty much anything that draws under 16.7 Amps. Most power tools draw up to and under 15 Amps. My industrial right-angle concrete drill only draws 8 Amps, and that thing is rugged. It’s more than enough for my needs for working in the woods where I can’t just “Plug In.”
Another thing that’s slick about it is it also charges marine batteries and has its own special DC receptical and comes with the included cable. You just fire it up, hook up the terminals to your battery, then plug in the cord. It doesn’t have a charge meter built in, so I purchased a hand held battery tester and check the charge level once an hour. I think the battery tester was under $30 (a good investment).
With that in mind, I used it last Memorial Day weekend during our Men’s Family Fishing Trip out at Johnston Pond camp here in Maine, out in the woods roughing it with tents. The area is surrounded with small-ish ponds, so my dad and I brought our little skiff and trolling motor with us (too small ponds for our larger, 2-stroke boat). We brought two 12 volt marine batteries with us to make sure we could spend the whole day out each day, then that evening charge one or the other up so it was ready for the next day. It worked great, we didn’t have to worry about running our batteries low and having to paddle all the way back to the landing. Peace of mind is nice.
This unit really is really quiet. There were five of us on the fishing trip, two younin’s – my friend and I, and three old farts – my dad, uncle, and elderly cousin. They complain about everything (old people tend to do that, haha). I figured someone was going to say something about the generator being noisey and I’d catch hell for it or something, but actually, everyone did nothing but praise how quiet it was. After it’s been running for 15 minutes or so, you kind of forget that it’s even there. Unlike our neighbors at a site a ways away from us, who had an old style generator that they ran at night, we could hear them having to hollar at each other in order to talk.
On top of all that goodness, since it’s an Inverter as well, you can also safely power computers, charge cell phones and iPods, run a tv and DVD player, and plenty of other things, if that’s what you’re into while camping, or in an emergency situation.
It starts up really easy. Mine started first pull right out of the box (make sure to put oil in it first, it’s not included), and still does every time. If you run it on Eco Mode (tv’s, appliances, ect.) I’m not sure how long the tank will last you hour-wise, I haven’t used it for that application yet, but in full power mode, meaning you’re constantly getting the amped up rpms for more amperage, the one gallon tank lasts for about 6 hours or so. I’d figure that it’d almost double that in Eco mode, and it’s twice as quiet. You can stand right next to it and it’s like a little humm.
I give the Yamaha EF2000iS five stars hands down for the price and performance. I’m really happy I didn’t go ahead and go with a knock off lesser brand. It was well worth the extra money for something that’s going to be reliable and dependable. There’s no sense in paying $500 or less for something that’s just going to be junk in a few months.
If you need a medium dutyInverter-Generator , I highly recomend it. You will enjoy it. It’s also very light and compact. Transporting it isn’t a problem at all.
72 of 73 people found the following review helpful:
5.0 out of 5 stars Super quiet and CARB compliant, March 6, 2010
By Scott Kopper (Redmond, WA) – See all my reviews
(REAL NAME) Amazon Verified Purchase(What’s this?)
This review is from: Yamaha EF2000iS 2,000 Watt 79cc OHV 4-Stroke Gas Powered Portable Inverter Generator (CARB Compliant) (Lawn & Patio)
This generator is super quiet and the engine runs really smoothly. It instantly changes it’s operating speed just as fast as I can move the speed switch on a 1850 watt hair dryer I used to test it. It doesn’t include oil and the angle of the oil fill hole is nearly horizontal, making it a little difficult to fill even with a funnel, but they did put a nice little drip tray right below the opening so it doesn’t go everywhere. The gas gauge is really nice. Made in Japan. Their competitor (Honda) has some nice videos on their website demonstrating the sound level of actual generators running and the equivalent size Honda generator is very close in noise level to this one. Yamaha should do the same but until then, check out the Honda website.
Yamaha says this is CARB compliant on their website so I’m not sure why Amazon says it isn’t. The label on the generator says it is a 3 on the 10 point California emission scale. Yamaha simply isn’t making a big deal of it like some others do I suppose. This is a new model as of summer 2009. The starter cord is really easy to pull – unlike any other engine I’ve ever started by hand.