TM 5-3610-253-14
(5) Turn spindle locknut to right until free travel is removed from locknut.
Tighten thumbscrew in spindle locknut.
(6) Release treadle.
(7) Test vertical stroke.
(a) Place single sheet of paper on work surface under drill bit.
(b) Press treadle down until drill bit contacts paper. Slowly release
treadle.
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