Yamaha EF4000DEC Generator Description
You could call the EF4000DEC the "all-star utility infielder" of
the generator field. That'sbecause
it does everything well — quietly and efficiently — and still has
power in reserve.
The heart of the EF4000DEC is an all-new 251cc overhead valve
engine with a uniquecombus-
tionchamber design that enhances power output and efficiency.