NORTON 1960-1970 LIGHTWEIGHT AND HEAVYWEIGHT "TWIN CYLINDER" WORKSHOP MANUAL 250cc TO 750cc. INCLUDING THE 1968-1970 COMMANDO : Veloce Enterprises, Inc. : 9781588502421 : 1588502422 : 16 Apr 2021 : 140 pages, and more than 140 illustrations and charts, size 8.25 x 10.75 inches. The original Norton factory "Twin Cylinder" workshop manual contained maintenance and repair data for both the lightweight and heavyweight Norton twins manufactured between 1960 and 1968, including the 750cc Atlas model, which was in production from 1962-1968. As many of the mechanical attributes from the Atlas series were carried over into the early Norton Commando models, we felt that the original "Twin Cylinder" manual was somewhat lacking as it did not include repair data for the early Commando that evolved from the Atlas. Consequently, we have updated and expanded this Floyd Clymer edition of the original "Twin Cylinder" manual to include the OEM Norton manual (part no. 06-3062) for the 1968-1970 Comma