Japan's Nikkei Stock Average posted a third straight decline on Friday as stronger Yen kept weighing on export shares amid renewed fears over European debt crisis. Nikkei 225 index fell 0.81% or 79.16 points and settled at 9,688.45. NSK Ltd tumbled 3.4% after its rating was lowered by Mito Securities. Kansai Electric Power advanced 2.8% on news the government has reached an agreement regarding new safety standards which would allow to restart two reactors at the Ohi nuclear power plant.