Ridgid 150 copper pipe cutter not holding down on pipe

[branimal]

I've had this for years and it's been a great tool. Recently the threads have been acting weird and the cutting wheel is not biting down on the pipe. The black knob doesn't push the cutting wheel forward. Not sure how to accurately describe this. Anyone know have this experience and know the fix?

 

[Firebrick43]

I've had this for years and it's been a great tool. Recently the threads have been acting weird and the cutting wheel is not biting down on the pipe. The black knob doesn't push the cutting wheel forward. Not sure how to accurately describe this. Anyone know have this experience and know the fix?

The end cap has unscrewed #8. Remove the adjuster knob and reinstall the end cap.

 

[branimal]

Thanks!