Publicidad
DES
j
Inconvénients
| Irregular stitch.
Needle is bent
Needle is badly mounted
needle guard badly adjusted
Cutters need sharpening
Differential badly adjusted
Blunt needles
Needle size is unsuitable for the
plate
f
Needles have unsuitable points
Irregular. fabric feed
Holes in fabric
Screw between base and sump is
insufficiently tightened
Sump
plug
is
not
completely
screwed in
Sump gasket is badly positioned
Arm and base covers insufficiently
locked
Inefficient gasket on filter plug
Too much tension
Thread wound irregularly on bobbin
front needle guard badly adjusted
Missed stitches
Oil level is too low
Oil passages are blocked
Oil pump filter is clogged
-Lack of lubrification
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Publicidad
