[1] The 12 JR Kyushu 4-car sets based at Minami-Fukuoka Depot were formed as shown below.

[2] The sets were rebuilt from surplus former 581/583 series EMU cars at JNR factories in Tsuchisaki (Akita), Kōriyama (Fukushima), Mattō (Ishikawa), and Kokura (Kitakyūshū).

Rebuilding work involved removing the upper sleeper berths, adding longitudinal bench seating at the ends of cars, increasing the number of doorways, reducing the number of toilets and washing areas, and the addition of slab-front cab ends to some former intermediate cars.

[2] The remaining JR Kyushu 715-0 series sets were finally withdrawn from service on 26 March 1998.

[2] KuHa 715-1 is preserved at the Kyushu Railway History Museum in Kitakyushu, restored cosmetically to its original identity of KuHaNe 581-8.