February 2017 Service ManualEnginesPart No. 1259369GT S-80 • S-85 • S-80X 1075-1RPM AdjustmentRefer to Maintenance Procedure in the appropriateService or Maintenance Manual for your machine,Check and Adjust the Engine RPM.5-2Flex PlateThe flex plate acts as a coupler between the engineand the pump. It is bolted to the engine flywheeland has a splined center to drive the pump.Type "B" flex plates combines the pump coupler,as part of the flex plate, which is installed onto theengine flywheel.Type "B"(flexplate with coupler combined)How to R emove the Flex Pl ateHow to Remove the Flex PlateNote: Perform this procedure with the engine offand cool to the touch.1 Open the engine side turntable cover.2 Tag and disconnect the battery cables fromthe battery(s).Electrocution/burn hazard.Contact with electrically chargedcircuits could result in death orserious injury. Remove all rings,watches and other jewelry.3 Tag and disconnect the wiring plug at theelectronic displacement controller (EDC),located on the drive pump.