Singer 211U157 - Page 13

From the library of Superior Sewing Machine & Supply LLC - www.supsew.com
Fig. 24
CLEARANCE .032" (0.8 mm)
Fig. 25
HOOK HEIGHT
ADJUSTING SCREW
HOOK HUB
SOCKET SCREWS
Fig. 26
ADJUSTMENT OF SEWING HOOK HEIGHT
When lower timing mark on needle bar is just visible at
lower end of needle bar frame on upward stroke of needle,
the hook should pass about .079 inch (2.0 mm) above
upper edge
of needle eye as shown in Fig. 24.
And the clearance between bobbin case stop finger and
throat plate should be .032 inch (0.8 mm), as shown in
Fig. 25.
TO ADJUST HEIGHT OF SEWING HOOK
To adjust height of sewing hook, first fasten throat plate
to bed of machine and place bobbin case stop finger in sew-
ing
position. Pass a .032 inch (0.8 mm) shim between
bobbin case stop finger and throat plate. If shim is too tight
or too loose, turn machine pulley over toward you so that
the hook hub socket screws shown in Fig. 26 are accessible
with a socket wrench. Loosen both screws and remove
cloth washer frorn bobb n case Turn hook until one
of the holes is in line witll hook height adjusting screw. To
raise hook, turn hook height adjusting screw downward.
To lower hook, turn hook height adjusting screw up. Re-
tighten socket screws and turn hook height adJusting screw
again
just enough to leave a light tension. Check sewing
hook timing.
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