29
Bobbin thread breaks
'LG\RXLQVHUWWKHEREELQSURSHUO\" Check the bobbin thread.
,VWKHVWLWFKSODWHKROHGDPDJHG" Change the stitch plate.
,VWKHEREELQDUHDFOHDQ" Clean lint from bobbin area.
,VWKHEREELQZRXQGFRUUHFWO\" Wind a new bobbin.
The seam has uneven stitches
,VWKHWKUHDGWHQVLRQFRUUHFW" Check needle thread tension and the threading.
$UH\RXXVLQJWRRWKLFNRUVOXEEHGWKUHDG" Change the thread.
,VWKHEREELQWKUHDGHYHQO\ZRXQG" Check bobbin winding.
,VDFRUUHFWQHHGOHXVHG" Insert a proper needle correctly, see page 18.
The machine does not feed or feeds irregularly
'LG\RXWKUHDGWKHPDFKLQHSURSHUO\" Check how the machine is threaded.
+DVVHZLQJOLQWFROOHFWHGEHWZHHQWKHIHHGGRJV" 5HPRYHWKHVWLWFKSODWHDQGFOHDQWKHIHHGGRJV
with a brush.
The main motor becomes overloaded
+DVWKHWKUHDGEHFRPHWZLVWHGRUMDPPHGLQWKH
EREELQFDVHDUHDRUWKHIHHGGRJV"
5HPRYHWKHVWLWFKSODWHDQGFOHDQWKUHDGVDQGOLQW
from the feed dogs and bobbin case area.
Re-thread the machine, both top and bobbin
threads.
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