Service manual

Released 01/2010
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
S-105
1-15
C - CORRECT USAGE
2.1. Loosen the securing screw of the needle Ë and remove the original needle.
2.2. Place the needle so that the grove of the needle is on the other side than the tensor Ì. The needle
must not have broken tip or other defect. You can check whether it is straight, if you roll the needle
on the flat pad. A good needle does not deflect in the tip.
2.3. T
ighten the screw Ë.
3. THREADING THE MACHINE
WARNING: make sure the power is switched off!
Look and quality of the buttonhole is influenced by:
- threads, their elasticity and resistance to breakage
- thread thickness – make sure that thread has the same thickness
- material sewn (thickness, density, fiber direction)
- upper and lower thread tension
- stitch density
- stitch width
- technology of sewing process (size of material spreading, distance of stitches from the cut edge)
Correct buttonhole should have:
- uniform stitch density
- consistent chain formation
- symmetric eye shape
- proportional shape and size
- smoothly trimmed threads
2.
NEEDLE EXCHANGE
Ë