The adjusting knob 47 is screwed at the lower end in the machine frame 2 and has {HEAD ~ a smaller diameter hole} 48 in {TAIL ~ the upper end portion} and a larger diameter hole 49 in the lower end portion 
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The adjusting knob 47 is screwed at the lower end in the machine frame 2 and has { HEAD ~ a smaller diameter hole } 48 in { TAIL ~ the upper end portion } and a larger diameter hole 49 in the lower end portion
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH