JLG 1250AJP Operation & Safety Manual page 75

1. Sequence while raising the Tower Boom from the fully lowered position.
a.
The Tower Boom must be fully elevated before the Tower Boom
can be extended from the fully retracted position.
b. The Tower Telescope out or in will only be operable when the
Tower Boom is fully elevated up.
2. Sequence while lowering the Tower Boom from the fully elevated position.
a.
Operate Tower Telescope in until Tower Boom is fully retracted.
(Tower must not lift down until tower boom is full retracted.
b. The Tower lift down will only operate when the Tower Boom is
fully retracted.
To avoid tipping machine if tower boom switching malfunction:
• Lower platform to ground using main boom lift and telescope functions.
• Have condition corrected by a qualified JLG service technician before
continuing use of machine.
4.16.3 Raising and Lowering the Main Boom
To raise or lower the Main Boom, position the Main Boom Lift switch to Up or
Down until the desired height is reached.
Note: The main lift function is not operable with the boom out of the trans-
port mode if the axles are not fully extended.
4.16.4 Telescoping the Main Boom
To extend or retract the main boom, use the Main Telescope Control Switch to
select In or Out movement.
Note: The telescope function is not operable beyond the transport position if
the axles are not fully extended.
1250AJP
WARNING
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Machine Operation
75