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28
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5
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A
30.Clean (Fig. 28)
1.Raise the presser foot;
2.Remove the two screws ① and needle plate ②;
3.Clean the feed dog with a soft brush;
4.Install the needle plate ② by two screws ①.
5.Turn the machine pulley slowly and check if the
needle drops into the hole center of needle plate
★If not
●Check if the needle is bent
●Loosen the screw ①, and reinstall the needle
plate ②
6.Turn the machine pulley and lift the needle
above the needle plate, check if the needle tip is
blunt, if yes, change a new one.
7.Tilt back the machine head
8.Remove the bobbin case ④
9.Clean the hook with a soft cloth and check if
the hook is worn out
10.Take out the bobbin from the bobbin case,
and clean the bobbin case with a soft cloth
11.Insert the bobbin into the bobbin case and
place the bobbin case back into the machine
12.Clean the dust on the filter (A) of oil pump.
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