FEED
REVERSE
LEVER
Before the machine leaves the factory, the spring tension
of
the feed reverse lever is set at an appropriate tension for easy and
comfortable sewing operation.
If it is necessary to adjust the feed reverselever spring tension,
tip machine back and loosen feed reverse lever spring retainer
screw Y3 holding the spring retainer Z3 on the machine leg.
Move
spring retainer Z3 up or down, as required, and firmly
tighten screw
Y3.
The lighter the tension, the easier it is to operate the feed
reverse lever, however
the
tension should be
set
alittle heavier for
maximum stitchlength and high speed sewing.
Normally, the 591D200A/C200A machines are adjusted to
sew a maximumstitch length
of
4.2mm (6 s.pi.)and 591D300A/
C300A machines to sew 5.1mm (5
s.pi.).
This however, can be
changed to 5.1 mm
if
desired, by turning over the feed regulat
ing dial stopper C4 on the underside
of
the feed reverselever, as
shown in Fig. 10.
0
Fig.
10
NOTE: The 591C200A machine can
not
sew a maximum stitch length
of
4.2mm when fitted with standard
fittings.
CAUTION:
Makesure the feed dogclearsthe front and rear edgesof the throat plate slots whenmaximumstitch
length is changed to 5.1mm.
TO
TIME
THE
FEED
Before
the
machine leaves the factory,
the
feed
and
feed
lifting eccentric is set for average sewing conditions; having
the timing screw (screw Mwhich appears immediately after set
screw N, Fig. 11, when feed eccentric is rotated toward the
operator) align on the timing mark provided for it on the arm
shaft. (Timing line on shaft for drop feed is at
top
when
needle bar is in
DOWN
position, whereas timing mark for
compound feed is at top when needle bar is in Up position.)
The timing screw M, Fig. 11, on the feed and feed lifting
eccentric should be securely tightened after it has been aligned
on the timing mark on the arm shaft. The set screw N, should
also be securely tightened.
-6-
Fig. 11
