Lull 644E-42 Operation Manual - Manual (Page 39)

Operation
37 Model 644E Origin 3/04
Middle Joystick (Boom Lift/Lower & Boom Extend/Retract)
The middle joystick (6) controls the boom lift/lower and boom extend/retract
functions. The joystick can be moved from the center position into any of these
quadrants. The joystick will return to the center position when released.
Boom Lift (7) ................................ move handle backward
Boom Lower (8) ........................... move handle forward
Boom Extend (9) ......................... move handle to the right
Boom Retract (10) ....................... move handle to the left
OU0060
6
OU0430
10
7
8
9