JLG 400SJ Operation And Safety Manual page 34

SECTION 2 - USER RESPONSIBILITIES, MACHINE PREPARATION, AND INSPECTION
10. With boom over left side, place DRIVE control lever to
REVERSE and drive machine off block and ramp.
11. Have an assistant check to see that right front or left
rear wheel remains elevated in position off of ground.
2-12
12. Carefully activate SWING control lever and return boom
to stowed position (centered between drive wheels).
When boom reaches center, stowed position, lockout
cylinders should release and allow wheel to rest on
ground, it may be necessary activate DRIVE to release
cylinders.
13. If lockout cylinders do not function properly, have quali-
fied personnel correct the malfunction prior to any fur-
ther operation.
– JLG Lift – 3121216