Clutch Problem

I'd first check for wear between the dogs and the bolts. This wear can often be of considerable aggravation while adjusting the clutch. You might look for this wear before taking the pulley off. With the clutch in the disengaged position, turn each bolt back and forth with an open end wrench (cotter key still in place) while watching the end of the bolt. You may notice a specific position where each bolt stands out of the pulley a little more. A dip of ten thousandths can be a lot! If you find this difference, you might try setting each bolt back to its worn spot after every adjustment before trying the clutch for snap. You might get a bit better idea as to what the trouble really is before you tear it clear apart.

If none of this fixes the problem and the facings are in good condition, it's time to measure the travel of the operating sleeve, check out the toggles and the condition of the toggle sockets in both the sleeve and the dogs.