JLG 680S Operator Manual - Manual (Page 35)

SECTION 2 - USER RESPONSIBILITIES, MACHINE PREPARATION, AND INSPECTION
3121233 – JLG Lift – 2-15
8. Place the 6 inches (15.2 cm) high block with ascension
ramp in front of right front wheel.
9. Place Drive control lever to Forward and carefully drive
machine up ascension ramp until right front wheel is on
top of block.
10. With boom over left side of machine, place Drive control
lever to Reverse and drive machine off of block and
ramp.
11. Have an assistant check to see that right front or left rear
wheel remains elevated in position off of ground.
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.