Oil mass Adjustment of Rotating Hook (Fig.21, Fig.22, Fig.23)
17
1.Adjustment method
1) Adjust the oil mass of rotating hook usingadjusting screw ①
:Screw down (turn it to the right)
adjusting screw ① to raise the oil mass ,or unscrew (turn it to the right) the adjusting screw to
lower the oil mass. Amount repeatedly until the lubrication amount is correct.
2) Check the lubrication amount again after the sewing machine has been used for approximately
two hours.
Fig.21
Special oil mass confirmation paper
70mm
25mm
Position for oil mass confirmation
Bottom plate
③
5-10mm
②
Fig.22
①
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