Reliable MSK-8420B instruction manual Machine Adjustment

4.3.5 Placing bobbin (Fig.18)

Note: when bobbin is placed into the bobbin case, the thread should be wound properly in the correct direction shown in the figure.

4.3.6Drawing thread from the bobbin (Fig.19)

a.Draw the thread end to Bobbin Slot (1) shown in the figure, and pull it out down through the inner bobbin stop piece.

b.Hold the thread with left hand , turn the balance wheel slowly and get the bobbin thread, then draw them a little apart from the presser foot.

18

thread

sliding plate

hook

hook

sliding plate

1	thread	19
2	1
thread
inner stop piece

5. Machine Adjustment

5.1 Thread tension adjustment

All forms of stitches are shown in Fig.20.

The normal stitch of sewing machine is shown as Fig.(A) If stitch is abnormal , the puckering and thread breakage will occur, and the needle thread tension and bobbin thread tension should be adjusted so that the normal stitch can be obtained.

A

Normal

B

20

C

a. If the stitch seam shows as Fig. 20B, indicates that the needle thread or bobbin thread tension is too loose , then turn the thread tension screw counter-clockwise to release the needle thread pressure; or turn the adjusting screw with a screwdriver to increase the bobbin thread ten- sion.( see Fig.20,22 )

21

loosen

tension adjusting screw

tighten

-7-