Yamaha generators have the longest emission engine durability
ratings issued by the Environmental Protection Agency and the
California Air Resources Board.
The EF1000iS weighs in at 27.9 pounds, making it extremely
Noise Block is Yamaha’s acoustically engineered sound reduction
system which helps make the EF1000iS among the quietest portable
generator in its class. (47 dBA to 57 dBA – ¼ rated to rated load).
Gasoline petcock lets you shut off the gas to run the carb dry for
storage and helps prevent stale gas problems.
The EF1000iS features Smart Throttle, a load sensing rpm
control that allows greater fuel efficiency and noise reduction by
automatically adjusting engine speed to match the load. It will run up
to 12 hours at ¼ rated load on a tank of gas.
The Yamaha EF1000iS inverter generator supplies clean, high
quality power. The EF1000iS – with its inverter system – features
Pulse Width Modulation (PWM) so voltage stability is within ± 1%,
and frequency stability is ± 0.1 HZ. Its pure sine wave is as clean as
or cleaner than public utilities power.
The Auto Warm-up feature automatically increases engine speed
for 4~6 minutes to ensure smooth power delivery during cold start
Yamaha’s Oil Watch Warning System helps prevent engine
damage from low oil and provides added peace of mind..
Lightweight, easy to carry design — Compact lightweight
alternator reduces weight to 27.9 lb., the lightest weight in its class
Smart Throttle, load sensing rpm control — Greater fuel
efficiency and noise reduction by automatically adjusting engine
speed to match the load
Auto Warm-up — Automatically increases engine speed for 4~6
minutes to ensure smooth power delivery during cold start ups
12 Volt DC output, battery-charging cables included —
Recharge 12-volt batteries for RV, auto, marine, etc.
Exclusive dual coil alternator stator — Greater output at a
lower engine speed for reduced noise, fuel consumption, and engine
Centralized control panel — Easy access to controls
Gasoline petcock lets you shut off the gas to run the carb
dry for storage — Prevents stale gas problems
50cc Overhead Valve (OHV) engine — Noise-reducing
operation with improved efficiency, increased reliability, and low oil
Large fuel fill access — Wide mouth fuel fill reduces spilling and
overflows during refueling
EPA & CARB Emission Engine Durability Rating — Yamaha
generators have the longest emission engine durability ratings
issued by the Environmental Protection Agency and the California Air
50 state legal — Meets emission regulations, including CARB
Factory Warranty — Covers the entire generator for defects in
parts and workmanship for three (3) years when the generator is used
for non commercial, industrial or rental use. When the generator is
used for commercial, industrial or rental use, Yamaha covers the
generator for two (2) years
Available Accessories & Options
Accessory Cover — Added protection, includes a storage pocket
for Owner’s manual, tool kit, and battery charging cables
Accessory Hour Meter/Tachometer — Keep track of running
time for service needs
Am/Watt Appliance Load Tester — Gives quick, accurate
readout of watts or amps used by 120 volt AC electrical devices
Yamaha Extended Service — Additional 1, 2 or 3 years of
Y.E.S. is available