You need to refer to the video to help you if you haved it other wise it can be done by turning thr plastic nob which is almost flat on the fro\nt of the head. turn it all the way to the left and thyen push the haed against theunit and turn the knob all the way the other way if this doesnt work repeatitbutg start with the nob turned akll the way to the rtight first.
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You need to refer to the video to help you if you haved it other wise it can be done by turning thr plastic nob which is almost flat on the fro\nt of the head. turn it all the way to the left and thyen push the haed against theunit and turn the knob all the way the other way if this doesnt work repeatit butg start with the nob turned akll the way to the rtight first.