Upper Tension Thread Release - AMF SERIES S104-130 Parts And Service Manual

S-104-100

UPPER TENSION THREAD RELEASE

On Cut-After machines, a thread draw-off cam, turning with the upper sector shaft, pivots with the
rocking tension assembly forward. During this time, the race is turning to form the eye. When the
stitching ends, the race reverses, allowing the rocking tension to fall back. This releases additional slack
thread for starting the next buttonhole.
On Cut-Before machines, the cycle ends with the race still facing backward and the tension assembly
rocked forward and additional slack starting thread is provided.
To adjust the amount of starting thread after the eye has been completed, stop the machine at any point
while stitching the second side of the buttonhole. Loosen screws A and turn thread draw-off cam B
clockwise until rod C is at the top of the rise, or counterclockwise until rod C is at the low point of the
rise (clockwise will increase the amount of starting thread; counterclockwise will decrease the amount of
starting thread) as necessary.
Revised 09/2004
e-mail: service@amfreece.cz; parts@amfreece.cz; website: www.amfreece.com
1-77
Phones: +420 582 309 146 (Service), +420 582 309 286 (Spare Parts); Fax: +420 582 360 606