The motor case is held together with those nuts. They need to be removed..... but the case will fall apart without them. So loosen them finger tight, have someone hang you upside down by your ankles and shove you into a space only a 3 year old would fit, hold case with both hands, remove nuts with 3rd hand, align hammer coupling w/plastic washers and install motor with 4th hand. I wish you luck. I have decent access to my motor and its still tricky.
