JLG E300 Operator Manual - Manual (Page 40)

SECTION 3 - MACHINE CONTROLS AND INDICATORS
3-10 – JLG Lift – 3121252
12. Function Speed Control
Adjusts speed of Boom and Swing Functions. Rotate
counterclockwise for slower speed and clockwise for
faster speed. To adjust Drive, Swing, and Main Boom Lift
to creep, turn knob fully counterclockwise until it clicks.
NOTE: To operate the Main Boom Lift/Swing joystick, pull up on
the locking ring below the handle.
NOTE: The Main Boom Lift/Swing joystick is spring loaded and
will automatically return to neutral (off) position when
released.
13. Main Lift/Swing Controller
Provides main lift and swing. Push forward to lift up, pull
backward to boom down. Move right to swing right,
move left to swing left. Moving the joystick activates
switches to provide the functions selected. Proportional
control of these functions can be attained by using the
Function Speed knob.