Maximum jib extension angle: 90 degrees Infinitely variable speed control for lifting and rotation operations Unique external pull-rod mechanism Emergency stop/engine cutoff switches installed on both turntable and platform Automatic upper/lower vehicle interlock system Outrigger ground contact detection and status indicator Bi-directional counterbalance valves installed on jib, upper arm and lower arm for enhanced stability during boom raising, lowering and stopping Pressure relief valve: Maintains maximum hydraulic system pressure at rated value for overflow stabilization