hifi engine

AKAI ST 1 reel to reel

Hi, friends. I have recently procured akai st1 spool tape recorder, which need restoration. Can any one please furnish me the service and operation manual for the same. This model appears to be unique and not much is available on net also. Even the power supply cable pin is unique and it has 3 small equidistant small holes on a cylinder type pin. I don't want to try any wrong power connections. Thanks everybody.