Part No. 32960 Genie Z-45/22 4 - 21Service Manual - Second Edition Section 4 - Scheduled Maintenance ProceduresTABLE B PROCEDURESB-21Test Fuel Select Operation -Gasoline/LPG ModelsThe ability to select and switch between gasolineand LP fuels as needed is essential to safemachine operation. A fuel selection can be madewhen the engine is running or not. Switchingmalfunctions and/or the failure of the engine to runproperly in both fuel modes and through all idlespeeds can indicate fuel system problems thatcould develop into a hazardous situation.Perform this test after checkingthe gasoline and propane gas fuellevels, and warming the engine tonormal operating temperature.1 Move the fuel select switch to gasoline andthen move the engine speed control switch tofoot switch activated high idle (rabbit and footswitch symbol).2 Start the engine from the platform controls andallow it to run at low idle.3 Press down the foot switch to allow the engineto run at high idle.Result: The engine should start promptly andoperate smoothly in low and high idle.4 Release the foot switch and stop the engine.5 Move the fuel select switch to propane gas.6 Restart the engine and allow it to run at lowidle.7 Press down the foot switch to allow the engineto run at high idle.Result: The engine should start promptly andoperate smoothly in low and high idle.The engine may hesitatemomentarily and then continue torun on the selected fuel if the fuelsource is switched while theengine is running.B-22Test the Turntable Rotation StopThe turntable is capable of rotating the boom 359degrees and is stopped midpoint between thesteering wheels by the rotation stop. Detecting arotation stop malfunction is essential to safeoperation and good machine performance. If theturntable rotates past the rotation stop, componentdamage may result.1 Start the engine from the platform controls.2 Rotate the turntable to the left as far as it willgo.Result: Movement should stop when the boomreaches mid-point between the steer tires.3 Rotate the turntable to the right full circle as faras it will go.Result: Movement should stop when the boomreaches mid-point between the steer tires.B-23Test the Drive Enable SystemProper drive enable system operation is essentialto safe machine operation. When the platform isover the non-steering wheels, drive movement isstopped and the indicator light turnson and thedrive enable switch must be used to reactivate thedrive function. This should inform the operator thatthe machine will move in the opposite directionthat the drive and steer controls are moved. Animproperly functioning drive enable system mayallow the boom to be moved into an unsafeposition.1 Start the engine from the platform controls.2 Rotate the turntable to the right until theplatform is positioned over the right non-steerwheel.Result:Platform over non-steer wheel indicatorlight should turn on.800-610-4101ActionRental.com
