Gradall G660 Operator's Manual page 7

Be sure you have enough clearance for upper-
structure tail swing, especially if there are cars or peo-
ple in the area. Always have a flagman to direct traffic.
On truck-mounted Gradalls, watch out for the
carrier cab when swinging the boom. Keep
the boom high, and if possible, do not swing close to
the cab.
Never reach into the boom holes unless the
boom sections are securely anchored together with a
heavy timber or chain.
Never operate the machine with another per-
son on the upperstructure. An observer could be
thrown from the deck or injured by the boom cradle.
3
continued . . .