Yamaha EF2000iS Portable Inverter Generator

The Yamaha EF2000iS Portable Inverter Generator is a good option for powering up sensitive equipment or computers. It is a cleaner source of power than older generators without inverters. It is a good power source for small items that do not need much power to run. It is not beneficial for a backup power source for homes. It is a great generator to take camping, and other small power needs. The Yamaha 1600 watt running inverter has very good features.

Yamaha EF2000iS Portable Inverter Generator Reviews

Product Features and Benefits

Economy Control Switch

The economic control switch is a nice feature to have built into this inverter. When the switch is turned on, it regulates the speed of the engine with the amount of load it is powering. This saves fuel and makes it quieter. When the economy control switch is turned off; the generator runs at an even power regardless of the load. This means that the generator will run at 4500 rpm no matter how much is being powered by the generator. This will use for fuel.

Engine and Fuel

This inverter has been tested and regulated to meet the CARB and EPA emission regulations. It even meets the standard of customers in the state of California. The Yamaha generator uses a CDI ignition system in the engine. The engine is a four stroke that has a 79cc displacement. The cast iron liner offers a long lasting life span. It comes with a 1.1-gallon fuel tank. The fuel cap has an air vent that can be off or on. It needs to be on for fuel flow.

Fuel Efficient

When the inverter is set for the economy setting, it can run for approximately 10 hours without the need to be filled back up. When the inverter is set for smart throttle it can adjust the fuel usage to the power load. This will save fuel and be more economical. The dual coiled carb also saves on fuel consumption and is more efficient.


Starting the generator can be done in a few simple process. Makes sure the fuel cap is on for air vent. Turn the economy switch to off. Turn engine switch and the fuel cock to on. Pull choke out and pull the coil to start. Let it warm up for a couple minutes if the temperatures are cold. To stop the inverter; turn economy off. Disconnect any electrical devices that are plugged in. Turn the engine to stop, and fuel cock off. Turn the fuel cap air vent to off. Doing these steps to start and stop the inverter will ensure an accurate use and performance.

Yamaha EF2000iS Portable Inverter Generator


  • High-quality inverter and has a wonderful design.
  • The fuel gauge is very helpful.
  • It is a very quiet unit.
  • Pull starter cord is simple to use.
  • Powers tools without any problems.


  • Had a circuit breaker issue. Needed to buy a replacement part for it.
  • It had carburetor problems which had to be cleaned.
  • Control unit issues and had to get it replaced.

Frequently Ask Questions

  • Q: Can this generator be used to power up tools at a job site?
    A: Yes, it runs power tools without any issues or concerns. This device is great for this option.
  • Q: If this machine needs to run during a Hurricane, is it water resistant?
    A: No, this generator should not be running if it could get wet. This could cause damage or injury. It should not be running indoors either.
  • Q: Does the generator have a pull coil start or an electric start?
    A: The generator only has a pull start option.
  • Q: How quiet is this generator?
    A: It is as quiet as you can get from a generator. It is extremely quieter than older models.
  • Q: How can the unit be secured outside?
    A: You can put a lock or chain through the handle of the generator and lock it to a post or porch.

Final Verdict

The Yamaha 1600 running watt generator has many good reviews from customers. Yamaha EF2000iS Portable Inverter Generator is very economical and fuel efficient. It can be used for smaller power needs. It seems to have great features that make it a beneficial device to use. It can be taken for tailgate parties, camping, job sites, and other smaller needs. Between reviewing the customers’ opinions and the features, it would be a good product to buy and use.

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