Paxar Rewind Monarch 415 Operator's Handbook Manual page 17

8. Slide the first core onto the 415 hub until it is against the
hub flange.
9. Hold the hub flange and twist the hub clockwise until the
paper core is tight.
10. Position the slot in the hub to the top.
11. Align the leading edge of the first label on the inside strip
with the slot in the hub and tape the supply to the core
(Figure 14).
Slot
5. Burster Option Setup and Operation
Figure 14
Label Edge
13