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I saw that I was not the first one to ask about oils and look for technical information. Renze/TomZ, wouldn't it be profitable to make this kind of information sticky? Would save a lot of searching.
I also have a user's manual and a workshop manual for the 47-, 57- and 67-series UR1 in PDF and the electrical diagram in JPG, but I can not host them. Can they be hosted here on the forum? If not, contact me via the email in my profile if you want a copy.