ZlaPatofna

I tried the steps from the video material. my machine just doesn't want to go over 1000RPM while another identical one has 3500RPM. seems like the limit is set in tech/developer mode

I have not been able to find a manual longer than 25 pages. also in the manual i found there is no info on how to increase the RPM as it was concluded at 1000 on one of the machines

I bought two half working Mauser Spezial MH 2645 machines, now I need a technical/user manual if anyone has one to send me?

I own two sewing machines model durkop adller 867 - classic with efka dc1550 variocontrol... Both machines are set to 2400 RPM, But one machine sews much faster as if at 3000-3500 rpm, how is that possible? Parameter 111 is set to 2,400 in both machines