A Q-Matic doesn't use this type of clutch (tapered shaft). The Q-Matics use a Max Torque straight shaft type clutch, I know as I am also a dealer for EZMTry a qmatic dealer I think they use those, ie. az bill.
They're a great little engine, I've got well over 10,000mi. on one of minethank you for your reply scotto ill check and see what i can find. Is this still a good 4 stroke motor even tho has tapered shaft.