Purney,
There is a simple shadtree procedure to accomplish this. Secure the clutch gear in a vise with soft jaws and using a drift punch, tap the retainer off, unscrewing it in a normal CCW rotation.
A brass drift would be the first choice, but a steel drift won't do any real damage. If you don't have any store bought soft jaws, a couple of pieces of wood would work.
Make sure the clutch gear (input shaft) is held securely and doesn't wiggle around. The sharp smacks with the drift must shock the retainer so things must be held tight.
Be sure to hold your mouth right, that's the secret.
Stuart
