BMW-WSM7 §31 ’79 sheet: 35–40 N·m; 1981 sheet: 40 N·m (29). The flat 25 ft-lb previously here sat just under the factory band.
This is the book's general row. In the book, pick your model and year and this figure resolves to your machine, with the one-page torque sheet, the job pages and the printable booklet.