Singer Sewing Machine, Instruction Manual

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4) To Check the Hook Distance
If poor stitching still occurs after the needle bar height
has been set properly, then the distance or the position of the
hook must be checked. It is possible to move the entire shuttle
assembly left or right to keep it close to the right hand side of
the needle.
Before an attempt to change the distance is made,
check it visually. The easiest way to see the clearance of the
hook and the needle is to remove the presser foot, needle plate
and the feed dog. This is easiest to accomplish with a well lit
area. Turn the balance wheel until you see the shuttle hook
swing back past the needle, then forward past the needle. As
you look through the feed dog opening from the top of the
machine, the hook should be as close as possible to the needle
on its right side, but should not de
fl ect the needle at all (See
fi g. 13).
fi g. 11 fi g. 12
needle is at bottom dead center. (See fi g. 16A) The hook
rotation is critical, and the range of rotation is small, if set
too far outside this range the machine may not sew at all
or have skipped stitches.
When the point can not catch the loop of thread
formed by the needle, the hook point is set too close to
the needle. If this happens it will result in all skipped
stitches. On the opposite end, if the hook is too far from
the needle, by the time the hook point gets to the loop the
thread is too high to be caught. When properly timed, the
hook will catch the loop consistently. (See
fi g. 16B)
fi g. 16A
fi g. 16B
18 23
Screwdriver
insertion location
to adjust needle bar
height
hook point
behind needle
Needle
Bottom
Dead
Center
Timing is correct when the point of the hook is
just in line with the needle and approximately 1/8”
above the top of the eye of the needle.
fi g. 13
Hook should just
brush by needle