3 - 24 S-40 • S-45 Part No. 102521October 2013Section 3 • Scheduled Maintenance ProceduresCHECKLIST B PROCEDURESa solenoid bootb high idle adjustment nutc yoke lock nutd yokee low idle adjustment screwf low idle lock nutIf high idle rpm is correct, disregardadjustment step 4.4 Loosen the yoke lock nut. Turn the high idleadjustment nut and solenoid bootcounterclockwise to increase the rpm orclockwise to decrease the rpm. Tighten theyoke lock nut and re-check the rpm.Note: Be sure the solenoid fully retracts whenactivating high idle.Perkins Models1 Connect a tachometer to the engine. Start theengine from the ground controls. Refer toSection 2,Specifications.B-11Check and Adjust theEngine RPMGenie specifications require that this procedure beperformed every 250 hours or quarterly, whichevercomes first.Maintaining the engine rpm at the proper setting forboth low and high idle is essential to good engineperformance and service life. The machine will notoperate properly if the rpm is incorrect andcontinued use may cause component damage.Note: This procedure will require two people.Ford ModelsNote: The engine rpm is controlled by the ECMand can only be adjusted by re-programming theECM. If rpm adjustment or service is required,please contact Genie Industries ServiceDepartment OR your local Ford dealer.Deutz Models1 Connect a tachometer to the engine. Start theengine from the ground controls. Refer toSection 2, Specifications.Skip to step 3 if the low idle rpm is correct.2 Loosen the low idle lock nut and turn the lowidle adjustment screw clockwise to increase therpm or counterclockwise to decrease the rpm.Tighten the low idle lock nut and re-check therpm.3 Move the function enable/rpm select toggleswitch to the high idle (rabbit symbol) positionat the ground controls. Refer to Section 2,Specifications.fec dbaProperty of American Airlines
