In {HEAD ~ its operating position}, the head is turned at an angle of 90° to {TAIL ~ the shaft}, whereby the pulleys lie in the same plane 
In { HEAD ~ its operating position } , the head is turned at an angle of 90 ° to { TAIL ~ the shaft } , whereby the pulleys lie in the same plane
OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH