Hardi NAVIGATOR 4000 Instruction Book page 33

Safety info
The boom must not be folded/unfolded while driving! Never use the folding/unfolding functions before the sprayer has
been stopped! Failure to do so will damage the boom.
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DANGER! Before unfolding the boom it is important to connect the sprayer to the tractor to prevent overbalancing
of the sprayer.
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DANGER! When folding or unfolding the boom, make sure that no persons or objects are within the operating area
of the boom.
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DANGER! Always follow the guidelines listed below when driving in areas with overhead power lines:
Never use the folding/unfolding functions in areas with overhead power lines.
3 - Description
31