Part No. 34032 Genie S-80 & Genie S-85 4 - 21Service Manual - First Edition Section 4 - Scheduled Maintenance ProceduresTABLE B PROCEDURESB-17Test the Service HornA functional service horn is essential to safemachine operation. The service horn is activatedat the platform controls and sounds at the groundas a warning to ground personnel. An improperlyfunctioning horn will prevent the operator fromalerting ground personnel of hazards or unsafeconditions.1 Turn the key switch to platform control andpull out the Emergency Stop button to theON position at both the ground andplatform controls.2 Push down the service horn button at theplatform controls.Result: The service horn should sound.B-18Test the Foot SwitchA properly functioning foot switch is essential tosafe machine operation. Machine functions shouldactivate and operate smoothly as long as the footswitch is pressed down, and promptly stop whenthe foot switch is released. The foot switch willalso shift the engine into high idle if the idle selectis switched to the rabbit and foot switch symbol.An improperly functioning foot switch can causean unsafe working condition and endangerplatform and ground personnel.The engine should not start if thefoot switch is pressed down.1 Start the engine from the platform controls.2 Without pressing down the foot switch, checkthe machine functions.Result: The machine functions should notoperate.3 Press down the foot switch and operate themachine functions.Result: The machine functions should operate.B-19Test the Engine Idle SelectA properly operating engine idle select switchis essential to good engine performance and safemachine operation. There are three settings.Low idle (turtle symbol) allows the operator tocontrol individual boom functions only. Drivefunctions do not operate at low idle.High idle (rabbit symbol) allows the operatorto control multiple boom and/or drive functionssimultaneously. This setting maintains aconsistent high idle and is usually selected onlywhen the generator option is being used.