A bit different to what Max and Norm suggest, there's no tabs. "Bolt head side" is stamped onto the square dished washer which has just a round hole, not the cross shape in your photo Max.
It's a B & S motor with a 23 mm shaft. The coupling is keyed on with a single slot. Looks easy enough to get it off.
Problem is the double eared coupling does not fit exactly into the carrier grooves, there's a few degrees wobble room and I can't see or feel if it's in right from below, then even if the bolt is snugged up tight the carrier eventually gets loose and rattles around, and the ears have chewed into the grooves.
Just wondering if there's another easily available coupler/carrier arrangement off another B & S mower which I can put on when/if this gets too chewed up.
