Baby Lock BL3-407 Manual de usuario

il::

Pressure adiusting belt Spool stand

Thread take-uP lwer guard Handle type thread guide

Threed takeuP guide Face plate thread guide

Thread guide switch Needle thread tension adjuster

Thread tension adjuster

Thread take-uP cover thread guide

Upper knite Upper looper thread

tension adjuster

Thread finder

Throat Plate Lower looper thread

tension adjuster

Presser foot Flywheel

Lower knife

Side cover

Base plate

Rubber cushion

Knife cover

Needle bar thread gui * For safety, remove power supply plug after use'

Do not piace objects on the controller'

Needle clamP screw

thread guide

Lower looper thread take-up

Upper knife holder

fixing screw

Lower looper Lower looper thread take-up guide

Upper looper intermediary thread guide

looper thread take-uP

Looper soction

INTRODUCTION

Thank you for your purchase of our Baby Lock Model BL3407.

This machine not only works as two machines, both 3-thread and 2-

thread overedgers, but can sew a wide range of fabrics, from the thickest

to the thinnest materials.

This instruction booklet will be your guide to correct operation of Model

8L3407. Read this booklet carefully and you will be the real master of

your new machine.

Belt cover screws

(Figure 1)

Mount the motor correctly onto the machine

body as follows:

Remove the belt cover by loosening both belt

cover screws (Figure 1).

Mount the motor onto the machine body by

tightening the bracket f ixing screw while

setting the V-belt in place at the same time,as

shown in Figure 3. (The bracket fixing screw,

washer and V-belt are enclosed together in the

carton).

Belt tension will be most suitable when the

V-belt bends slightly under finger pressure

(see Figure 4). Make belt tension adjustments

by shifting the position of the belt tension

adjusting nut accordingly (Figure 4).

Re-attach the belt cover.

(Figure 4)

Belt tension adiustinq

fixing screw

uE@\

Bracket {ixing screw (Figure 2)

(Figure 3)

(Figure 5)

Controller

Connecting controller to motor

Put the connector in the terminal box socket,

as shown in Figure 5. Then put power inductive

plug into the power supply socket.

The machine runs faster as the controller pedal

is pressed down farther and slower as the pedal

is let up.

* For safety, be sure to remove the power

supply plug after use. Also be sure not to

place objects on the controller.

Terminal box

The one hand threading system of this machine ensures you the easiest possible threading.

You only have to thread correctly alonn the color-coded thread passages.

2-1 Prior to threading

(1) Setting of spool

Cheese (or cone) spool thread will be usually

used for this machine. Bobbin spool thread

is also available when held by *bobbin sup-

porter, as shown in Figure 7.

* available separately at order

(2) How to open knife cover and side cover

(Figure 8)

Pull the knife cover knob to the right and

then downward. Push open the side cover

to the left.

'Bobbin supporter

Bobbin spool thread

lFigure 7)

Push open tu the left.

Pull the knob to the right and

then downward.

Ch6€so spool thread

Fit 'baby net' (accessory) to cover

spool when you use synthetic

threads that are liable Io frczzle. (Figure 6l

(1)

(2)

(3)

2-2 For changing threads

Cut the thread (to be changed) near the

spool and tie the new thread to the re-

maining piece of thread on the machine,

as shown in Figure 9.

Lift up presser foot.

Lift tension adjuster knob so that it passes

the knot of linked thread smoothly, and

draw the thread till the knot comes about

10 cm past the presser foot (Figure 10).

Note: Special care must be taken when

changing "needle thread" :

Cut off the knot before it is rlrar,rrn

too near to the needle eye so as to

avoid possible bending of the neerlle

by pulling the knot caughr in rhe

needle eye (see Figure 1 1 ).

(Figure 9)

K nots

__'______-\--\

| .-t-

li2

sr----

(Fisure 101

Needle eye

(Figure 111

2-3 For 3-thread overedging

This machine is pre-adjusted for 3-thread over-

edging and when unpacked will be found set

accordingly with three trial threads.

o Position of subsidiary looper and thread

guide switch

For 3-thread overedging, the subsidiary looper

and thread guide switch should be set in the

positions shown in Figure 12 and Figure 13.

respectivel y.

Handling guides for the subsidiary looper and thread guide switch

is charted on the back side of the knife cover.

Subsidiary looper

(Figure 12)

Thread guide switcl

=Red indicator

(Figure 131

(3)

(1)

(2t

How to set looper thread

Open both knife cover and side cover.

Set the upper looper thread according to the

'pink code.'

Draw out the thread about 1 0 cm away from

the presser foot'(see Figure 14 and Figure

15).

Set the lower looper thread in accordance

with the 'yellow code.'

The lower looper may be threaded most

easily in the following manner:

Turn the flywheel clockwise to bring the

lower looper to the far left.

Thread through the lower looper thread

guide @ and the lower looper first hole

@ while looking through the thread

f inder. Then bring the lower looper to the

far right and thread it through the lower

looper second hole @ .

Draw out the thread about 10 cm away

from the presser foot (see Figure 14 and

Figure 15).

Close both knife cover and side cover.

* A threading guide is charted on the back

side of the side cover.

Threading loopers

Thread finder

(for lower looper

th read )

\"(

t,E

'o/ :f(ffi

(Figure 141

. How to set needle thread

Correctly set the needle thread in accordance

with the 'blue code' referring to Figure 16 and

Figure 17. Then, be sure to pass the thread

through the needle eye from this side out into

the other side (hollow side). Draw out the thread

about 1 0 cm away from the presser foot.

Tension adjuster knob

Pass thread between the two plat€s, (Figure 161

')' batulot

(Frgure 17)

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