HIGHLEAD GC0518-1 Instrukcja obsługi Katalog części - Strona 8
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14 RELATIVE POSITION
OF THE FEED DOG
TO NEEDLE PLATE (Fig 13)
1 ) Set the stitch length at minimum.
2 ) Turn the balance wheel so as to raise the feed
dog to its highest point.
3 ) Lay down the machine head toward the other
side and loosen the screw 5 (Fig 4).
4 ) Adjust to be 32.1mm from the edge of the
needle plate to the center of the needle hole on
the feed dog. (Fig 13)
5 ) Securely tighten the screw.
15 THE POSITION OF THE
NEEDLE AND
THE NEEDLE HOLE OF THE
FEED DOG
Turning the balance wheel to lower slowly the needle
bar, check whether the needle descends to the center of
the needle hole of the feeder or not. (Please check again
the needle is perfect one.)
1 ) Remove the cover G (Fig 2) and loosen the screw 1
(Fig 14) slightly.
2 ) Holding the bottom of the needle bar rock frame H
(Fig 3), move it as may be required to get the correct
position to the feed dog.
3 ) Tighten the screw and close the cover.
16 TIMING THE NEEDLE
WITH FEED DOG
(Figs 15, 16)
It is important that the timing relationship between
the needle on its downward stroke and the feed dog
movement is maintained at all times. When the scarf of
the needle on the downward stroke reaches the top
surface of the feed dog, the feed dog movement must
start. When adjustment is required, use the following
procedure to change the position of cam.
1
Fig 14
Fig 15
Fig 15
1
Fig 15
1
1
9
10
9
9
Fig 13
Fig 13
Fig 13
32.1mm
32.1mm
32.1mm
1
1
Fig 14
Fig 14
2
2
2
6
10
6
10
6