S-4000
1-45
Revised 01/2005
e-mail: service@amfreece.cz; parts@amfreece.cz; website: www.amfreece.com
Phones: +420 582 309 146 (Service), +420 582 309 286 (Spare Parts); Fax: +420 582 360 606
ADJUSTMENTS
Clamp Plate Zero Position
Obtain the correct .05 mm clearance and tighten the screws on the shifter arm.
Manually rotate the machine through the first bar and the second row of stitches.
Note: When the drive spring releases from the right shifter arm, the shifter plate must be .05 mm from the
boss.
Loosen the right-hand shifter arm and spring set screws. Positioning the shifter arm and spring to the
right increases the shifter arm and boss clearance, when the drive spring releases. Positioning the
shifter arm and spring to the left decreases the shifter arm and boss clearance, when the drive spring
releases, Figure A.
Manually rotate the machine to the home position.
Position the stop to contact the clamp plate edge, Figure B.
Tighten the screws.
In the correct home position, three conditions must be present:
The shifter plate must be .05 mm or less from the casting boss, Figure B.
The clamp plate must contact the stop, Figure B.
The clamp mat must be 1 mm (0.040") from the throat plate, Figure B.
While holding down the clamp plate, cycle the machine several times and ensure the three conditions remain
constant.
If incorrect:
Check for worn parts and repeat the settings.
Install the cover plate and the seven screws.
Sew a few buttonholes on a scrap piece of fabric, to ensure correct settings.
Note: It is not unusual to repeat the setting several times to obtain the correct adjustments.
Figure B
1 mm,
(0.040")
Clamp mat
Throat plate
Stop
Casting
boss
Shifter plate
Clamp plate
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