Introduction
Tools
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The head is attached with a machine screw and a split washer to make the head hold its position.
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If the head slips sometimes the helical split washer can be bent out or replaced.
 
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Spring: holds ball bearing against pawl
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Ball bearing: holds pawl in its position
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Pawl: allows gear/tang to rotate in only one direction
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Gear/Tang: part that rotates
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Lever: selects the pawls position and what direction the gear turns
 
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