Yanmar YDG YI2 Series

The register lists here 8 versions, four each based on the YDG3700 and YDG5500 sizes. Both sizes appear in the N as well as the V variant, each additionally in two different end-code variants. Displacement is 320 or 435 cm³, apparent power ranges from 3.3 to 5.8 kVA at mains voltages of 230 or 240 V and mains frequencies of 50 or 60 Hz, single-phase; the air-cooled sets weigh between 71 and 106 kg.

As portable diesel generators, the YDG range belongs to the classic line-up of handy power generators for construction sites, agriculture and mobile use, where Yanmar ranks alongside Honda and Denyo among the well-known Japanese suppliers; the two sizes, 3700 and 5500, cover different power classes within the portable segment. A diesel engine in this class typically means longer service life and lower fuel consumption under continuous running than a petrol equivalent, which is why the YDG range is popular wherever a generator runs for many hours a day.

When buying used, what matters is operating hours and the condition of the generator head, the oil level and cleanliness of the diesel filter, the function of the sound-insulating enclosure, and a tight fuel tank free of corrosion. It is also worth checking the output sockets and starter leads, since portable generator sets often work in demanding outdoor conditions. Spares and support run through the Yanmar sales network.