* Belarus refineries running at reduced capacity

* Refinery supplies as far west as Germany affected

* Moscow says two-weeks needed to fix issue across network

By Andrei Makhovsky and Gleb Gorodyankin

MINSK/MOSCOW, April 29 (Reuters) – Belarus said on Monday that clean Russian oil had yet to reach its borders via a major pipeline supplying Europe after tainted crude running through the system prompted several importers to halt flows last week.

State-run oil firm Belneftekhim said Belarusian refineries were still running at reduced capacity, after Moscow had said it would start pumping clean crude from Monday through the Druzhba network that supplies refineries as far west as Germany.

Moscow had also said on Friday it would take two weeks to stabilise oil supplies across