Singer 211W151 User Manual

e-AUTION: The - hook - is- equipped-with a
screw in the hub for adjusting the vertical
position of the hook relative to the throat
plate seat. This position is set to a gauge
at the factory. When replacing or install-
ing a new hook, care must be taken to se e
that the bobbin case stop finger K, Fig. 31
fits correctly in the throat plate. If it is
too high, it will interfere with the free
passage of thread. If it is too low, it may
slip out and cause damage to hook and
bobbin case when machine is in operation.
To make the adjustment, remove cloth
washer in bottom of bobbin case, loosen
socket screws HZ, Fig. 30, page 9 in hook
hub, then turn hook until adjusting screw
appears beneath one of the holes in the
bottom of bobbin case. Hold hook down
against its seat and turn adjusting screw
with screwdriver until the proper up and
down position is attained. Tighten socket
screws HZ, Fig. 30 in hub of hook.
10
To remove ball bearing from hook shaft,
rest bearing with shaft-end up on two pieces
of sheet metal placed across the open jaws
of a vise. Tap shaft until bearing is re-
moved.
TO ADJUST BOBBIN CASE OPENER
{see Fig. 31)
The bobbin case opener Y should be
set so that it touches the bobbin case as
lightly as possible, yet turns the bobbin
case enough to make a sufficient open-
ing for the free passage of the thread be-
tween throat plate and bobbin case.
TO TIME BOBBIN CASE OPENER
{see Figs. 31 and 3Z)
Turn machine pulley over toward you
until lower timing mark on needle bar is
even with end of needle bar frame on up-
ward stroke of needle. In this position,
the mark DZ, on flange of opener driving
shaft, should line up with reference mark
CZ on hook saddle. If opener shaft is out
of time, tip machine back and loosen
y
E2
02
C2
Fi g. 31. Adjustin g Bobbin Case Opener
K2
Fi g. 32. Timing Bobbin Case Opene ~
socket screws KZ in opener driving gear
then return machine to upright position
and turn shaft with screwdriver in screw EZ
at top end of shaft, then tighten socket
screws KZ in gear.
From the library of: Superior Sewing Machine & Supply LLC

Singer 211W151 Specifications

General

Brand	Singer
Model	211W151
Category	Sewing Machine
Language	English