This Spider Tool fits all models of the 100 Series drive clutches; ie. 100C thru 108EXP. Simply secure the tapered half in a vise, or use a standard socket and breaker bar. Attached the clutch to the taper, as you would to the engine crankshaft, using your engine clutch mounting bolt. It may be necessary to torque-up as you would on the engine. Then, using the spider tool, loosen spider. After all servicing is completed, remove the clutch using your standard clutch puller. Spider should be torqued to 250 ft/lbs.