Service Manual February 2017Checklist B Procedures40 S-80 • S-85 • S-80X Part No. 1259369GT5 Move the fuel select switch to LPG.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.Note: The engine may hesitate momentarily andthen continue to run on the selected fuel if the fuelsource is switched while the engine is running.B-15Test the Drive BrakesGenie specifications require that this procedure beperformed every 250 hours or quarterly, whichevercomes first.Proper brake action is essential to safe machineoperation. The drive brake function should operatesmoothly, free of hesitation, jerking and unusualnoise. Hydraulically-released individual wheelbrakes can appear to operate normally when theyare actually not fully operational.Collision hazard. Be sure that themachine is not in free-wheel orpartial free-wheel configuration.Refer to maintenance procedure,Confirm the Proper BrakeConfiguration.Note: Select a test area that is firm, level and freeof obstructions.1 Mark a test line on the ground for reference.2 Start the engine from the platform controls.3 Move the engine idle control switch to footswitch activated high idle (rabbit and footswitch symbol), then lower the boom into thestowed position.4 Choose a point on the machine (i.e., contactpatch of a tire) as a visual reference for usewhen crossing the test line.5 Bring the machine to top drive speed beforereaching the test line. Release the drivejoystick when your reference point on themachine crosses the test line.6 Measure the distance between the test lineand your machine reference point. Refer toSpecifications, Performance Specifications.Note: The brakes must be able to hold the machineon any slope it is able to climb.
