1991+ Kawasaki 650 SC Factory Service Manual, Page 82Get this manual
7-4 ENGINE BOTTOM END Coupling Removal
Remove: Engine (see Engine RemovalInstallation chapter) Coupling Damper and Cover Magneto Cover Holding the flywheel, unscrew the couplingSpeCial ToolsFlywheel 570011313 [AJ Coupling Holder: 570011230 [8]
Installation Notes
.Apply thin coat of silicone sealant to the coupling threads