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The Yamaha ef2800im - 2500 watt portable inverter generator is available for purchase today.

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Yamaha EF2800iM - 2500 Watt Portable Inverter Generator

(Based on expert analysis, manufacturer ratings and customer reviews)
4.7 out of 54.7 out of 54.7 out of 54.7 out of 54.7 out of 5
6 Reviews
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  • Features
  • Specs
  • 3
    Q&A 
  • 6
    Reviews
  • Articles
  • Shipping
  • Accessories

Grade

Style
Run Watts
2,500
Rated Watts
Surge Watts
2,800
Starting Watts
Fuel
Engine
Need Help? Call Our Generator Experts.


Inverter System w/ Pulse Width Modulation (PWM)
Produces higher-quality and cleaner electricity
A pure sine wave as clean or cleaner than commercial power

2,800 Max Rated Watts
Rated at 2,500 watts for continuous duty

“Economy Control” Electrical Governor
Adjusts engine speed to electrical need
Improves fuel economy and reduces noise

Oil Watch Warning System
Automatically shuts engine off before oil level is low
Prevents engine damage & costly repairs

Cast Iron Cylinder Lining
Extends the life of the engine

USFS-Approved Spark Arrestor Muffler
Quiet operation & keeps sparks from exiting exhaust system

AC Non-Fuse Thermal Breaker & Full-Panel GFCI Protection
Must use GFI type manual transfer switch for panel connection
Not for use with interlock kit

12-Volt (8.3A) DC Output (Includes Cables)
Recharge 12-volt batteries for RV, auto, marine, aircraft, etc.


Model
  Model Number:EF2800IM
 Manufacturer:Yamaha
 Made in USA:No
Engine
 Brand:Yamaha
 Starting System:Recoil Start
 HP/CC:171 cc
 Consumer Engine Warranty:3 Years
 Commercial Engine Warranty:3 Years
 Engine RPM:Inverter
 Low Oil Alert/Shutdown:Yes
 Cast Iron Sleeve:Yes
Product Specs
 Voltage120 Single-Phase
 Frequency:60 Hertz
 Alternator:Inverter
 Auto Voltage Regulation:Yes
 Fuel TypeGasoline
 Rated Amps:21 Amps @ 120 Volts (Single Phase)
 Portability Kit:Unknown
 Tank Size:2.6 Gallons
 Run Time (50% Load):12.5 Hours
 Fuel Tank Material:Metal
 Fuel Gauge:Yes
 Decibel Rating @ 7m:60-67 db(A)
 Idle Control:Yes
 Hour Meter:No
 Voltage Meter:No
 Lifting Eye:No
 Neutral Type:Floating
 Battery:Not Applicable
Overview
 Assembly Required:No
 Weight:68 Lbs. (30.84 kilograms)
 Dimensions:19.2"L x 15.6"W x 16.7"H
(48.77 x 39.62 x 42.42 cm)
 Consumer Warranty:3 Years
 Commercial Warranty:3 Years
Download Documents


Outlets
8.3-Amp DC
NEMA 5-20R (GFCI)

NEMA L5-30R
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  3 Questions
Q: I have a customer running propane on a Yamaha genset. While burning propane the engine burns excessive oil, not a problem on gasoline. Any ideas?
by Shane Bland from Florida on June 24, 2014

A: The Yamaha portable generators are engineered and warranted to operate on gasoline only. The reason your customer is burning through oil is due to the excessive temperatures of the unit.

Gasoline burns at 485 degrees F whereas propane burns at 1008 degrees F which will cause excessive heat within the engine in turn burning off the engine oil.


by Mike, Product Expert
Q: Can a GFI outlet from a generator be connected to a transfer switch?
by Vito L. from New York on January 24, 2014

A: Thanks for your inquiry.

You will need to go with a GFI type transfer switch if you use the GFI protected outlet on the generator. This will only apply to the outlet listed below since this is the only GFI protected outlet on this particular generator. Keep in mind that this outlet is not usually used to hook up to a transfer switch.



In order to get the full power from this generator you will want to use the 30-amp 3-prong outlet which is NOT GFI protected and can be used with a standard 120 volt only transfer switch.



When using the outlet that is shown above, we recommend the following items:

Reliance Controls 30114A

APC 32316-UTS6H Indoor Transfer Switch

Reliance Controls Inlet Box (PB31)

Reliance Controls Power Cord (PC3110)

by Mike, Product Expert
Q: My EF2800i won't start. The plug boot and oil were replaced. I checked the fuel, cleaned the carburetor and air filter and it still does not start. Any suggestions?

by Jamie Doherty on May 11, 2011

A: Since you have performed all the basic customer checks the best thing to do would be to take the unit to a certified Yamaha service center. You can find one from the link below.

Service Center Locator

by Mike, Product Expert
Yamaha EF2800IM Reviews & Ratings
Write Review
Overall Rating
Features
5/5
Quality
5/5
Performance
4/5
Value
4/5
Overall
4.7 out of 54.7 out of 54.7 out of 54.7 out of 54.7 out of 5
Pros
Easy To Use (5)
Easy To Store (5)
Quiet (3)
Exceeded Expectations (2)
Reliable (1)
Cons
Doesn't Meet Some Specs (1)
Unreliable (1)
Difficult To Use (1)
Expensive (1)
80% of respondents would recommend this product to a friend
6 Reviews  Sort by 
 
George
Purchased from Electric Generators Direct
Purchased 12/2/13
Most Helpful Positive Review
REVIEWED
DEC.
27
2013
5 out of 55 out of 55 out of 55 out of 55 out of 5
Started On First Pull - Great On Gas
This generator is very quiet and only used about 3/4 galllon in six hours.
Pros: Easy To Store, Easy To Use, Quiet, Exceeded Expectations
Cons: Expensive
George Recommends This Yamaha Product
George Would Recommend Electric Generators Direct To A Friend
Web Site
5/5

Service
5/5

Shipping
5/5
"This is the second generator I have purchased from Generators Direct. Their customer service is great and delivery was very fast. I received it in California three days after it shipped."
 more
Was this review helpful?
02
Marilyn K.
Lakewood, CO
Purchased from Electric Generators Direct
Purchased 6/9/14
Most Helpful Critical Review
REVIEWED
JUL.
16
2014
3 out of 53 out of 53 out of 53 out of 53 out of 5
Quality But Altitude Challanged
The Generators Direct website was excellent and easy to order from and the generator was delivered right on time. The generator itself has high quality components. No complaints there.When we used it at an elevation of 9200 feet it ran so rich it fouled the plug and clogged the spark arrestor. We took it in for a $130 service and it is still way too rich and back in the shop.

We have used and still use two Generacs for years at this and much higher elevations (up to 12000 feet) with no... more
Pros: Easy To Use, Easy To Store, Quiet, High Quality
Cons: Difficult To Use, Unreliable
Marilyn Does Not Recommend This Product
Was this review helpful?
10
Bob
Holden, MA
Purchased from Electric Generators Direct
Purchased 12/15/12
REVIEWED
DEC.
21
2012
5 out of 55 out of 55 out of 55 out of 55 out of 5
Exactly What I Need
I love this generator. OK, it isn't as pretty and quiet as the other Yamaha inverter generators, but it is quiet enough and I don't need it to be pretty.
I use this generator to work on my 46' sailboat in the winter when it is hauled out and on jacks in the yard, The marine shore power cable plugs directly into the unit's L5-30R (30Amp 120 VAC) outlet.
This allows me to run the ship's battery charger and via the ship's AC system it provides me with enough power to also run a 1500W... more
Was this review helpful?
83
David E.
Purchased from Electric Generators Direct
Purchased 5/10/13
REVIEWED
AUG.
05
2013
5 out of 55 out of 55 out of 55 out of 55 out of 5
Good Generator, But Won't Run Rv Ac Unit
I did a lot of research for generators. I saw the Yamaha 2800, and for the price, weight, features, I thought this could be it. I called Yamaha, looked at their spec sheet, and it stated that the generator should start a 13,500 BTU ac unit (per specs). I have a 2013 prowler Rev with a Coleman mach ac unit. I bought the generator, and it started right up. It was easy to use and lightweight. The big test. I hooked it up to my Rev and failure. It would not provide enough power to start the AC.... more
Pros: Durable, Easy To Use, Price, Easy To Store
Cons: Doesn't Meet Some Specs
David Recommends This Yamaha Product
Mike, the Portable Generator Expert
Product Expert
David,
RV AC units can be a little tricky when sizing the correct generator for the job. We always suggest verifying that the generator will be compatible. The RV manufacturer, dealer or AC manufacturer should be able to provide this information to you. If you think that the issue maybe be the generator itself (not providing the rated output), you may want to contact Yamaha directly @ (800) 962-7926 or click here for a local Yamaha Service Center.
more
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52
Steve D.
Kenner, LA
Purchased from Electric Generators Direct
Purchased 4/21/13
REVIEWED
JUN.
28
2013
5 out of 55 out of 55 out of 55 out of 55 out of 5
Perfect For Running My Equipment
I use this to operate my mobile photo trailer with 5 computers and 3 printers. Its extremely quiet and low fuel consumption. Ran for 2 days on econ. mode on 1 tank of fuel.
Pros: Easy To Use, Quiet, Exceeded Expectations, Easy To Store
Steve Recommends This Yamaha Product
Was this review helpful?
42
Joseph Lovato
Santa Fe, NM
Purchased from Electric Generators Direct
Purchased 7/16/13
REVIEWED
AUG.
07
2013
5 out of 55 out of 55 out of 55 out of 55 out of 5
Yamaha 2800i
I owned a Yamaha 3000IS to run my 26' RV. The problem was it was to heavy for one person. I just purchased the Yamaha 2800IM which weighs only 70lbs and is very easy for 1 person to load and unload. I hooked it up, turned on my A/C and television and ran like a charm. I would recommend it.
Pros: Easy To Store, Easy To Use, Light Weight, Reliable
Joseph Recommends This Yamaha Product
Was this review helpful?
23
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