17
Setting:
Adjustment:
17.1
.2
.3
.4.
.5
.6
.7
.8
Hook
timing,
hook-to
needie
ciearance
and
bobbin
case
position
finger
Withthe
needle
position lever InItscentral position, the stitch width leverat "0"
and
the
needle
bar
at a position 2 mm beyond b.d.c. (pin In hole "1") the hook point
must
be exactly oppositethe centre lineofthe needle. Also,Inthisposition,there should be a
clearance
of
abt.
0.1
mm
between
hook
point
and
needle.
17.0.1
Bring
the needle bar to a position 2.0 mm beyond b.d.c., makingsure that the needle
does
not strike the sewing hook. Blockthe machine Inthis position by inserting the pin In
hole
"1" of
the
bearing plate.
Set
the stitch width lever at "0" and the needle position lever at Itscentral position.
Turnthe sewing hook on Itsshaft
until
ItspointIsopposite the centre lineofthe needle.
Adjustthe hookiateraiiy,howeverwithoutturning it,untiithere is a ciearanceof0.1
mm
between
its
point
and
the
needie.
Inthis position, tighten the accessible hook
set
screw 1.
Screw
on
the
bobbin
case
position finger
so
that
it is positioned in
the
slot
of
the
bobbin
case
base
and
that
there
is
a
clearance
of
0.5
mm
between
its
front
edge
and
the
bobbin
case
base.
Pull
the pinoutofthe holeInthe bearingplateand tightenthe second hookset screw1.
Check this adjustment
(see
"Setting").
27
From the library of Superior Sewing Machine & Supply LLC - www.supsew.com
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