GBC F - 160 Operation And Maintenance Manual page 65

Installation
h) Slowly turn the upper unwind brake adjustment
knob counter clockwise.
i) You should feel a decrease in resistance on the
turning of the upper unwind shaft as you turn the
upper unwind brake adjustment knob counter
clockwise.
j) Lower the rear safety shield.
k) Now perform steps "b" through "h" again for
the lower unwind shaft.
Lower unwind
brake adjustment dial
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F - 160 Operation and Maintenance Manual
© GBC Pro - Tech August 1999