Controls And InstrumentsBoom Lifting/LoweringDANGERBefore operating the boom, make sure thatnobody is within the working range of themachine.To lift or lower the boom:Smoothly shift the lever to position B to lift theboom or to position A to lower it.Operator’s ManualPart No. 57.0009.0540GTH-4013 SX - GTH-4017 SX - GTH-4013 EX - GTH-4017 EX63First Edition - Second PrintingCourtesy of Crane.Market