Sachs motorcycle books includes a service repair handbook for the Sachs engine.
Sachs Motorcycles is a German based motorcycle and motorcycle engine manufacturer, founded in 1886 in Schweinfurt. It is the world's oldest motorcycle manufacturer. Sachs produced engines for other manufacturers to use in their motorcycles and mopeds.
Sachs Engine Service Repair Handbook by Mike Bishop (1974). Service repair handbook for the Sachs engine as used in motorcycles, covering the 100 and 125cc 1968 - 1974. The book has many photographs and technical drawings accompanying the informative text.