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The EF2800i weighs just 68 pounds, making it the lightest generator in its class. The key is the multi-pole rotor with a small stator. This design is smaller and lighter than a conventional twopole alternator with a large stator—and it helps make the EF2800i extremely portable.
With the EF2800i, Yamaha has created one of the quietest generators in its class (64-68 dBA). Our engineers looked at the total design, and then made changes where they would be most effective: engine operating speed, intake noise, exhaust noise, and valve train noise.
The EF2800i—with its inverter system—features Pulse Width Modulation (PWM) so wavelength distortion is less than 2.5 percent, making it ideal for equipment that requires stable frequency and voltage, such as computers or other sophisticated electronics.
Yamaha’s Smart Throttle feature automatically adjusts engine speed to match the load. The result is quiet running, maximum fuel efficiency, and a run time of 14.7 hours at ¼ rated load.
Yamaha’s Oil Watch warning system prevents engine damage, avoiding costly repairs and minimizing down time.
Inverter system with Pulse Width Modulation (PWM) control
— Can power computers, or computer-controlled electric tools or devices
— Improves fuel economy and reduces noise
— Excellent power output to weight ratio
GFCI (Ground Fault Interrupter Circuit)
— Helps reduce the risk of shock
— Improved efficiency, increased reliability quieter operation
Cast iron cylinder lining
— Provides long engine life and consistent performance during continuous use
Oil Watch Warning System
— Prevents engine damage, avoiding costly repairs and minimizing down time
USFS-approved spark arrestor
— Reduces chance of fire caused by an errant spark
— Reduces electrical interference with TVs and radios
Specially designed muffler
— Reduces noise and weight
AC non-fuse thermal circuit breaker
— Added durability and peace of mind
12-volt DC output
— Recharge 12 volt batteries for RV, auto, marine, etc.
Open frame design
— Provides a lighter weight and large gasoline capacity
EPA & CARB Emission Engine Life Rating
— Yamaha generators have the longest emission engine life ratings issued by the environmental Protection Agency and the California Air Resources Board
— Covers the entire generator for defects in parts and workmanship for three (3) years
50 state legal
— Meets emission regulations, including CARB
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