Basically unscrew the drawbar about 2 turns and tap the top with a hammer. I support my quill by hand rather than clamp it tight in the faint hopes I will not damage the spindle bearings too much. Out has gone the 3/8 drill chuck supplied and because of my fear of damaging the Eastern Bearings I have chosen to permanently fit a taper shank collet chuck to take ER16 collets, no point in larger size as I suspect the plastic gears will melt or end up as plastic chips if I go larger in diameter than 3/8 or 10mm cutters. If I should ever need to use a drill chuck asgain I will fit it with a 3/8 or 10 mm diameter parallel shank and hold it in a collet. Now no more sticking tapers as the collets are released when the cap nut is unscrewed and no more hammering on the drawbar to release the taper.
John (in UK with a Clarke MCD10 equivalent of the HF 47518)