JLG 660SJ Operator Manual - Manual (Page 116)

SECTION 6 - GENERAL SPECIFICATIONS & OPERATOR MAINTENANCE
6-12 – JLG Lift – 3121205
Serial Number Locations
A serial number plate is affixed to the left rear side of the
frame. If the serial number plate is damaged or missing, the
machine serial number is stamped on the left side of the
frame.
Figure 6-1. Serial Number Locations