Operator's ManualSecond Edition · First PrintingPart No. 114475 Z-135/70 17ControlsGround Control Panel1 Primary boom down button2 Primary boom extend/retractbuttons3 Primary boom up button4 Not used5 LCD screen control buttons6 LCD readout screen7 Red Emergency Stop button8 Glow plug button9 Key switch for off/ground/platform selection10 Engine start button11 Engine speed select button12 Auxiliary power button13 High speed function enablebutton14 Low speed function enablebutton15 20A circuit breaker forsystem circuit16 Alarm17 Platform level up/downbuttons18 Jib boom extend/retractbuttons19 Jib boom up/down buttons20 Secondary boom up/extendand down/retract buttons21 Platform rotate left/rightbuttons22 Turntable rotate left/rightbuttons