Twin Cylinder Manual For the Unapproachable Norton Motor Cycle Lightweight Twins - Jubilee, Navigator and Electra Heavyweight Twins - Models 88 and 99, 650 SS 750 Atlas, 750 G15 CS By Norton Motors Ltd. Books / Paperback Transportation › Other Transportation Publisher: Norton Motors Ltd., January 1969 Price $526.30 Free Shipping Send to a friend Used - Good London: Norton Motors Ltd., n.d. (ca. 1964). 4to. 85pp. Illus. Good book. (motorcycles, maintenance, repair, handbooks and manuals) Inquire if you need further information. $526.30 1 in Stock at Warehouse Quantity Add Free Shipping to continental U.S. OR $1.00 per item discount if shipped to store.