Consew 244B Handbuch

MODELS: 244B 244RB 254B 255B 255RB

254RB 254BH

ONSEIN

OPERATOR'S GUIDE

FLAT BED SEWING MACHINE

LUBRICATION (USE WHITE SPINDLE OIL)

1. To fill oil reservoir on toP of machine until oil level reaches to upper reference line A. Always keep oil level is above

lower reference line B. (Fig.1)

2. Oiling for hook mechanism: Open slide plate on bed and pull out oil gauge.

Fill oil Into reservoir for hook mechanism up to level reference mark on the gauge. (Fig. 3)

3. When star.ting the machine Initially and after kept away for a long time without using at all, oil sufficiently to re-

spective necessary parts indicated by arrow before starting operation and pre-running. (Fig. 2, 4 and 5)

Oil filler hole

Fig. 1

----.---.-.---...-.---.---

Fig. 4

Fig. 2

Oil filler hole

Fig. 3

Fig. 5

OILING ADJUSTMENT FOR UPPER PART (Fig. 6)

Point

Fig. 6

While operating machine, lubrication to each spots of

upper part of machine are made automatically. When the

machine Is In continuous. operation, stop oiling for a while

at your option. In that case, turn dial until two points fit

together, then the dial comes down and the lubrications

are stopped.

OILING ADJUSTMENT FOR HOOK

MECHANISM (Fig. 7)

Refrence line

Fig. 7

The maximum 011flow is available when reference

line on 011adjusting knob Is In a line with point on

hook saddle. While It stops when the reference line

is upright: .

To adjust, loosen pinch screw and turn 011adjusting

knob, then tighten the pinch screw after adjustment.

NEEDLES STANDARD NEEDLE

Long

groove

Fig. 8 (One needle) Fig. 9 (Two needle)

Needle

set screw

Needle

Long

groove

DP-F22#16... LSW-6LG, LSW-7LG.

DPX17#22... 254B, 254RB-l, 255B,

255RB-l, 333B, 333RB-l,

339B, 339RB-1.

DPX17#24... 254BH, 254RBH-1.

1. Move needle bar to highest point.

2. Insert needle up as far as possible.

3. Long groove faces left (In case two needle machine,

the long groova faces Inside).

4. Then, tighten needle sat screw.

ROLLER PRESSER FOOT (Fig. 10)

(LSW-6LG,6LG-T.6LG-TA.7LG,7LG-T,7LG-TA )

Fig. 10

Lift up prll96ar bar lifter, and press down presser foot

saddle and turn It to left.

To return, turn It to right.

WINDING BOBBIN

1. Place bobbin on spindle as far as It will go.

2. Laad thraad as shown by Fig. 11 and wind several

times on bobbin.

3. Press down lever for drive then start machine. Pulley

will be dlsangaged from V-belt automatically after

bobbin fills up with thread.

o Winding

strangth:

Adjustable

by serrated

nut.

Screw (2) Fig. 11 o Uneven winding:

Adjustable by loosen-

ing screw (1) and move

winder to right or to

left.

o W!ndlng amount:

Adjustable by scraw (2)

BOBBIN REMOVAL AND REPLACEMENT

STANDARD TYPE .WITH CAP

Latch

Latch 1. BOBBIN REMOVAL

Pull uplatch,and bobbin

comes up.

2. BOBBIN

REPLACEMENT

Place threaded bobbin

Into case and press down

the latch. At this time,

make oure the bobbin

turns to left (counter-

clockwise), puliling 1:he

thread.

Tension regulating spring

Fig. 13 - Fig. 14

1. BOBBIN REMOVAL

Pull up latch and remove cap and bobbin.

2. BOBBIN REPLACEMENT AND THREADING

Place threaded bobbin Into cap. At this.tlme, make

sure bobbin turns to right (clockwise). Then, pull

out a length of about 5 cm of thread, guide the

thread Into slot and pull the thread to left, under

tension spring. Place the cap with bobbin into

hook and press down the latch.

3. THREADING BOBBIN

Guide thread into slot and pull the thread betwaen

bobbin case and opener, and pass thread inside of

tension spring. .Leave about 5 cm from needle plate

and close slide plate lightly.

THREADING NEEDLE

ONE NEEDLE TWO NEEDLE

7.G

Fig. 15

o Raise needle bar to highest point and lead thread

from thread stand the numerical order.

Thread needle from left to right.

o A (pre-tension disc) is oniy for LSW-6LG, 7LG, T,

TA type.

o Raise needle bar to highest point and lead thread from

thread stand the numerical order (1 -11 for left needle)

and the alphabetical order (A -K for right needle).

Thread needle from outSide to inside.

THREAD TENSION NEEDLE THREAD

Needle

~thread

~-Material --- Bobbin

Perfect stitching thread

Tight tension of needle thread

Loose tension of needle thread

Fig. 17

Fig. 18

To adjust, turn serrated nut

BOBBIN THREAD

(Standard type)

Regulating screw

To adjust, turn adjusting screw

6.F

5.E

S.H

8it 49./

910

.l'

TO REGULATE PRESSER FOOT PRESSURE

y~-"'=~_:

(

More (-r

..1])..

"Less

'-l'

g:;.:<.

!(::~.:.~'4

~:~_~.~~.:=:.:~::.~=:-:.-f~:,=~::===-:--=:_.=--=-=~-

Fig. 21

The pressure on the material should be as light as

possible, while stili sufficient to Insure correct

feeding.

ADJUSTING LIFT OF ALTERNATING

PRESSER FEET

(Compound feed mechanism only)

To adjust, Loosen wing nut and move link and

stud assembly along slot.

ADJUSTING STITCH LENGTH REVERSE STITCHING

(onjy with reverse mechanism)

Number

(stitch/Inch)

Fig. 23

Pressing down button A, turn pulley slowly toward

.you. Then plunger will enter Into notch In feeding

mechanism. Hold the plunger down and turn

pulley either forward or rearward so that desired

number on pulley may come at mark on arm.

Then, release the plunger.

.~_."

,. .

Press down lever as far as It will go.

RE.sET SAFETY CLUTCH MECHANI$M

Fig. 25

..-

1. Remove any foreign matter which may have lodged

In hook. Do not use any sharp.edged tools.

2. Pressing button B and turn pulley rearward slowly

to return safety clutch.

Operating pressure of the safety clutch can be changed.

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