16 GS15
plus
2. Center the carriage spindle preferably by using the slew keys (see
"Front Panel" section) or manually, with certain precautions as
outlined here. Be sure that the carriage spindle is not located at
either extreme end of its travel and that both ends of the rubber drum
can be reached easily.
3. Open the bail arms at either end of the drum by pulling them up and
away from the drum.
4. Using the slew (arrow) keys, rotate the drum until three closely
spaced pins are visible. These three sprocket pins are used to align
the material.