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Helvetia 837 service sheets


Gra

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Hi everyone,

I have been given a Helvetia 837 automatic to service for a family member and I have been trying to find service sheets on the internet for it, so far no luck.

As the auto wind looks particularly complicated I would like this info to study before stripping this part down, does anyone have any ideas where I could find this info? Cousins do not seem to have anything either.

Alternatively, has anyone ever worked on one of these? so if I get completely stuck I could get advise.

http://www.ranfft.de/bidfun/katb/2uswk/Helvetia_837.jpg

Regards and happy New Year

Graham

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