Greetings comrades. Where can I find a repair/workshop manual for the Zorki 4? Even a combined 3/3M/4/4K would be welcome. Is there such a beast out there. Are there any in English

Will it explain the mysterious workings of the slow speed mechanism and where those four little brass bushes come from

Now isn’t this a better topic than ‘Naval Grazing’ Mind you: I guess it depends on ‘Who’s’ Naval you’re grazing
Take care everyone.
B.