Operation Manual

10
process by the adjustable bobbin winder pre-tension U.
Indication 2:
The bobbin thread pre-tension U should be adjusted so that the bobbin thread is wound regularly with the
lowest possible tension.
Presser foot
3.5
3.5.1
Lifting the presser foot
-by knee lever in basic equipment
The lifted presser foot can be arrested in its upper position by
turning the lever B.
3.5.2
Regulating the presser foot
- by the knurled screw N, according to the equipment
Turn clockwise for higher pressure
Turn counter-clockwise for lower pressure
3.5.3
Changing the presser foot
- Arrest the presser foot in its upper position by turning the lever B,
- Move the needle to its upper dead point
- Loosen the screw and pull off the presser foot,
Fit the other presser foot in inverted sequence.
Feed
3.6
3.6.1
Feed dog
3.6.1.1
Stitch length
- For adjusting the stitch length, turn the knurled handle Q.
Turn clockwise = for reducing the stitch length
Turn counter-clockwise = for increasing the stitch length
3.6.1.2
Stitch regulator
- Lift the stitch regulator Q for sewing backwards or for bartacking,
3.6.1.3
Bartacking
- by lifting the stitch regulator lever Q in case of basic equipment,