JLG 4017 Eccupped for Platform Operator Manual - Manual (Page 59)

Section 2 - Pre-Operation and Controls
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2.5 STEER MODES
Stop the telehandler before changing steering modes. An LED will indicate the
steering mode selected.
All-Wheel Steer
Front-Wheel Steer
Note: This mode is required for travel on public roads.
Crab Steer
OZ0180
C
OZ0190
C
OZ0200
C