the throat plate and clean all lint and dirt from
between the grooves and teeth of the feed dog.
Tip the machine back and turn the balance wheel
toward the operator until the feed dog is in its
highest position. Loosen the screw in the feed
lifting cam fork and raise or lower the dog as
desired; then retighten the screw. A properly set
feed dog will show a full tooth above the throat
plate when at its highest position.
After adjusting the feed dog, check to
see that the needle is properly set in the
hole in the feed dog. If adjustment is
needed, loosen the pinch screws in the feed
driving rock frame, and set the needle so
that when it is all the way down, it will
be slightly forward of center in the hole.
Retighten the pinch screws. The feed adjust-
ment points are illustrated in figure 9-37.
ADJUSTING FEED ECCENTRIC.— The
feed eccentric (fig. 9-38) may occasionally need
adjustment to remove play caused by wear of the
gib, or by looseness between the feed eccentric
and the eccentric body. To adjust the gib,
loosen the two locking screws, then turn
inward on the adjusting screws until all play
is eliminated and the eccentric fits in the slot
properly.
240.86
Figure 9-37.—Feed adjustment for the 211 W 151 sewing
machine.
240.87
Figure 9-38.—The feed eccentric.
CAUTION
LOCKING SCREWS MUST BE
LOOSENED BEFORE ATTEMPTING
TO LOOSEN ADJUSTING SCREWS.
RETIGHTEN THE LOCKING SCREWS
AFTER ADJUSTMENT IS MADE.
The feed eccentric collar may be moved to the
right or left to change spring tension, but it is
ordinarily set flush with the hub of the eccentric
body.
CHANGING THE LENGTH OF THE
STITCH.— TO change the length of stitch, stop
the machine. Turn the balance wheel, by hand,
toward the operator until the button drops
(clicks), then turn the machine pulley until the
number representing the desired stitches per inch
is lined up properly and then release the button.
CAUTION
DISENGAGE THE BUTTON BEFORE
ATTEMPTING TO SEW. DO NOT
ENGAGE THE BUTTON WHILE THE
MACHINE IS IN OPERATION.
Removing Components
To remove the hook, takeoff the presser foot,
throat plate, and feed dog; then loosen the two
9-29
