Product Manual

5
BOOM LENGTH:
The boom can be extended to pick up loads that are farther away from the mast. To extend the boom:
1) Lower the hook by pressing the "DOWN" button;
2) Lift the boom and remove the boom length adjustment pin; then
3) Grasp the end of the inner boom and pull it out;
4) Align the appropriate pin holes in the inner boom with the pin holes at the end of the outer boom and reinstall the
boom retaiing pin. Confirm that the pin is fully inserted through both the inner and outer booms, and secure
the length adjustment pin with the hitch pin.
WARNING! DO NOT attempt to extend the boom while the jib is loaded. Always unload the jib before adjusting the
length.
LIFTING PROCEDURE:
1) Tighten the threaded knob against the inner mast to prevent the load from swinging as it is raised.
2) Lower the load hook, and secure the load/rigging to the load hook. Be sure that the safety latch is closed.
3) Press the “UP” button to raise the load.
a) Keep one hand on the underside of the boom to stabilize it while lifting a load.
b) Watch the load and the boom whenever the jib is used for signs.
4) If necessary, loosen the threaded knob and slowly rotate the boom until the load is positioned as needed; then
press the “DOWN” button until the load is enitrely supported by the ground or vehicle. Ensure that the load is stable
before disconnecting the rigging from the hook.
PREPARING THE JIB FOR TRANSPORT:
1) Fully retract the boom and repin it.
2) (WTJ-E) Unpin the boom from the lock bar and lower the boom so that it is parallel with the mast. Lower the hook,
if necessary. Pin the free end of the lock arm to the boom stowage bracket.
(WTJ-20) Remove the boom pivot pin but leave the angle adjustment pin in place. Rotate the boom until it is
parallel to the mast. Secure the boom to the mast with a strap or cord to prevent it from bouncing while driving.
WINCH:
The electric winches are designed for intermittent duty. Extended use without pause to allow cooling will cause
overheating which can damage the motor. The maximum continuous run time is three minutes. Monitor the
motor temperature whenever the winch is operated.
Operate and maintain the winch as directed in the owner’s manual for your winch.
E
N
G
L
I
S
H
WTJ-E models
Position C
Position B
Angle adjustment pin
(shown in position A)
Hitch pin
Length adjustment pin
(shown with boom fully
retracted)
Inner
mast
Outer
mast
Mounting
plate
Outer
boom
Lock
bar
BOOM ANGLE ADJUSTMENT DIAGRAM:
Boom angle adjustment
pin (shown in Position A)
Boom pivot
pin
Position D
Position C
Position B
Outer
boom
Boom
receiver
bracket
WTJ-20 models
Winch
support
bracket
Boom
stowage
bracket
Position D