– 5 –
3
3
2
Within 0.3 mm
3
1. Fix the throat plate auxiliary
cover
3
so that is higher
than the throat plate
2
(within
0.3 mm). When it is lower than
the throat plate
2
, needle
breakage or the like due to the
defective feed will be caused.
2. Confirm by putting a ruler or
the like that the throat plate
auxiliary cover
3
is horizon-
tally installed. If not, throat
plate auxiliary cover
3
and
lower plate
1
come in contact
partially with each other, and
abnormal worn-out will be
caused.
3
7
6
2
1
9
45
8
0.8
to
1.0mm
to
1.0mm1.0mm
1) Move the cloth feed base to the rear, and
place throat plate auxlary cover (asm.)
3
from between lower plate
1
and
throat plate
2
. At ths tme, be careful not
to bend or damage lower plate
1
.
2) Temporarily fix throat plate auxiliary
cover (asm.)
3
wth throat plate auxl-
ary cover setscrew
5
and washer
4
.
3) Temporarily fix throat plate auxiliary
cover (asm.)
3
to the machne bed
wth throat plate auxlary cover support
setscrews
6
(10 pcs.).
4) Fx throat plate auxlary cover (asm.)
3
to the machne bed wth two coun-
ter-sunk screws
7
.
5) Move the cloth feed base to the left
front, move up and down throat plate
auxlary cover (asm.)
3
so that a ds-
tance of 0.8 to 1.0 mm s provded be-
tween the bottom surface of lower plate
nstallng base
8
and the top surface
of throat plate auxlary cover (asm.)
3
,
and fix setscrews
6
.
6) Perform the smlar work by movng the
cloth feed base to the rght front.
7) Fx throat plate auxlary cover setscrew
5
.
8) Referrng to the cauton below, perform
postonng of the throat plate auxlary
cover. When the postonng s not per-
formed enough, perform the postonng
after loosenng once throat plate auxl-
ary cover setscrew
5
and throat plate
auxlary cover base setscrews
9
.
[When using area 3020]