Part No. 48412 Genie S-60 & Genie S-65 5 - 75Service Manual - Second Edition Section 5 - Troubleshooting Flow ChartsChart 33Machine WillNot Drive AtFull SpeedBe sure all otherfunctions operatenormally.Be sure the machine isnot raised above orextended beyond thedrive limit switches.Be sure the boom drivelimit switch is clear ofany debris and is notactivated when theboom is in the stowedposition.Be sure that the boomextend drive limit switcharm is being held downwhen the boom isretracted.Be sure the wiring tolimit switches is intactand show no sign ofdamage or corrosion.Be sure the free-wheelvalve is closed on thedrive pump.Be sure the drive speedselect switch is on highrange (machine on levelsurface symbol).With the boom in thestowed position, checkcontinuity from TB40 toground.continuity Check for correct wiringof limit switches(LS1 and LS2) ORrepair or replace boomlift drive limit switch orboom extend limitswitch.no continuityWith the boom in thestowed position, checkterminal #6 onhorsepower limiterboard for continuity toground.continuityRepair short to groundin orange wire shortedto ground from TB40 toTP40 to terminal #6 onhorsepower limitercircuit board.no continuityRe-adjust or replacehorsepower limiterboard OR check formisalignment of limitswitches (LS1 and LS2)OR consult GenieIndustries ServiceDepartment.800-610-4101ActionRental.com
