Just about to service foc an AS1700/1 25 jewel automatic movement in a fairly good Tressa watch for my local charity shop. Balance swings free, time and date set seem ok, auto-wind seems to be working ok but it will not hand wind (cannot turn crown). I have parts list and some limited tech info (covers only auto-wind, mainspring and date change but not movement).
Any advice will be most appreciated especially location of any Left Hand Threads or anything else out of the norm.