close your fist & set it on top of the vac can. open your fist & let your fingers curl around the dist housing/cap the way they would naturally cup it. this is your direction of rotation. let us know what you get & if you pull the dist you can turn the housing in your hand just right till you can see enough of the weights to see if they are CW or CCW rotation. plus measure the dist shaft (Darthvdr is wondering)