Product review (1 stars): 
Not sure how y'all can be giving this thing 5 star reviews when this is an OEM part, and it's the SAME as the one you are replacing WHICH IS BROKEN!! There is an engineering flaw in the way the three cams are locked onto the drive hub. Very, very flimsy. When the indexing tooth breaks off of a cam it no longer trips the internal switches.

If you want to extend the life of the next one, turn the dial slowly, and don't ever turn it backwards! Keep all your broken timers, take them apart, and if you are lucky you won't break the same cam twice and you can swap out the bad one! (just kidding--well, actually, that works)