- Wattage (Gas): 2,800 W / 2,500 W
- THD: < 2.5%
- Noise Level: 65 dBA
- Fuel Type: Gasoline
- RV Ready: No
- Run Time@ 25% load: 14.7 h
- Run Time@ 50% load: Unspecified
- Weight: 68 lbs
Table Of Contents
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The Yamaha EF2800i has a 171 cc (5.5 hp) Yamaha MZ175 OHV 4-stroke gasoline-powered engine that can put out 120V. It has a running power of 2,500W and a maximum power of 2,800W. This inverter generator has a noise level of 65 dBA, which is just a little louder than a normal conversation. It starts up with a traditional pull-start mechanism. Yamaha’s Smart ThrottleTM is built into this generator. This load-sensing feature automatically changes the speed of the engine to match how much it is being used. This saves fuel and reduces noise. The EF2800i can run for up to 14.7 hours on a full tank of 2.6 gallons of fuel (fuel consumption is approximately 0.18 GPH). The EF2800i makes a clean sine wave with a Total Harmonic Distortion of less than 2.5%. This means that sensitive electronics can be plugged into AC outlets without fear (THD).
The control panel has 3 AC outlets: a duplex 120V 20A (5-20R) GFCI outlet and a 120V 30A (L5-30R) outlet.It also has 1 DC outlet: a 12V/10A receptacle that makes it easy to charge your batteries.Even though this Yamaha generator isn’t quite RV Ready, its L5-30R receptacle makes it easy to connect to an RV with an L5-30P to TT-30R adaptor.
Several lights let you know when the generator is too full, when it’s ready to go, and when the oil level is too low.The inverter generator has a built-in fuel gauge that makes it quick, easy, and convenient to check how much gas it has.From a safety point of view, the product has an overload protection (circuit breaker) and an automatic low oil shut-off (Oil Watch system), so you can use it without worrying.The Oil Watch warning system from Yamaha gives you more peace of mind.This feature makes the car last longer because it keeps the engine from getting damaged and needing expensive repairs.When the oil gets low, the generator turns off by itself and won’t start again until more oil is added.In addition to the features we’ve already talked about, the Yamaha EF2800i comes with the usual paperwork and an owner’s manual , so you can use it right away.
The Yamaha EF2800i has a standard, open frame that measures L19.2 x W15.6 x H16.7 in, This gives it support and lets it be lifted off the ground.The design works well in rough places and for hard outdoor use.With a dry weight of 68 lbs, the EF2800i’s power can be used anywhere.Also, the open frame makes it very easy to grab the frame and move it.
The following charts show how some of the most important features of the Yamaha-EF2800i compare to other generators with the same power output.
**Fuel efficiency is give in relative percentage, 0 being the lowest and 1 being the highest value. Please see below specification table for actual value.
|171 cc Yamaha MZ175 OHV 4-stroke
|AC: 120V 60 Hz, DC: 12V
|Running amps (@120/240V)
|Peak amps (@120/240V)
|Run time @50% load
|Run time @25% load
|Automatic Voltage Regulator
|1x 120V 30A (L5-30R)
|1x 12V 10A receptacle
|Low oil, overload and output ready
|Metal, 2.6 gal
|Approx. dimen. (L x W x H)
|19.2 x 15.6 x 16.7 in
|Noise (lower limit)
|Low oil and overload protection
- We compared more than 500 portable generators at 50% load. We found that there is “skewed right” distribution for the difference between 50% load and 25% load and the median comes at 1.43. With this number we converter all the 25% load runtime to 50% load. Same with the propane efficiency, where median is 1.38.
- For some generators where propane runtime was not given, we used NIST 1994 GGE (Gasoline Gallon Equivalent) formula: 5.66 lbs. of propane = 1 gal of gasoline. All propane runtime is for 20 lbs. propane tank (4.7 gallons).
- Unlike many other sites, we actually tried to find out information about each of the above requirements. However, we are human and are therefore capable of the odd oversight or mistake. Please let us know if you spot any missing or erroneous values so that we can fix them.
About the Manufacturer
The Japanese-based Yamaha Corporation, established in 1887, has a lengthy history spanning more than 130 years and has a hand in just about every sector imaginable, most notably motorbikes, musical instruments, and electronics.Many of the best portable generators are among the company’s diverse offering of goods.Many of the more recent versions, it has been said, are built in China rather than Japan.
There is a warranty on the Yamaha EF2800i for up to 3 years.This warranty may not cover all parts of the generator or may only cover certain parts.Yamaha’s warranty policies can tell you more about how long the warranty on a Yamaha generator lasts.You can also call their customer service line at 1-800-962-7926.