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6 Machine Adjustments
6.1 Stitch length adjustment
On the operational panel, change the stitch length in the pitch box, after set the new
stitch length, press the button Find Zero to save it.
6.2 Rotating needle adjustment
The machine comes with the alternate rotating needle and continuous feeding, so it
can make beautiful pattern performance.
°
6.2.1 Turn the two needles 180
, it requires no much clearance when turning the
needles. Adjust method: loosen the right screw No.19(parts book page 6) and adjust
the height of the right part No.16(parts book page 6), upper is increase the clearance
and lower is decrease the clearance.
6.2.2 Two needles should vertical to sewing direction and parallel with the slot of
needle plate.
6.2.3 Time of needle rotating: When needle bar at the highest position, two needles
°
turn 90
, parallel with sewing direction and vertical to the slot of needle plate. It is
adjusted by the wheel No.12(Part book page 22).
6.3 Thread tension adjustment
The tension of thread is very important for the stitch performance. Turn the thread
tension nut clockwise to increase the upper thread tension, and counterclockwise to
decrease the tension. And loosen the screw of pressing spring on shuttle to decrease
the bottom thread tension, and tighten the screw to increase the bottom thread tension.
6.4 Feed dog adjustment
6.4.1 The feed dog is in the middle of the needle plate. It is adjusted by the lower
feeding front crank.
6.4.2 Set the max.stitch length, turn the handwheel, the clearance between feed dog
and needle plate is about 1.5mm.
6.4.3 The feed dog is about 1.5-2.2mm higher of the needle plate. Turn the hanwheel
until the feed dog lift to the highest position, loosen the screw No.25(parts book page
12), turn the shaft( No.16 in parts book page 12) clockwise to lift the feed dog, and
counterclockwise to lower the feed dog. After adjust, tighten the screw.
6.4.4 When the needles get down from the highest position, the feed dog start to
move forward. It can adjust the position of feeding cam and upper shaft.
6.4.5 The feed dog must at the highest position when start feeding. It can adjust the
position of bushing(No.5 in parts book page 24) in the slot of outer roller carrier(No.4
in parts book page 24).
4
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