Brother International LK3-B430 Service Manual - Page 23

L-

A

L

9

9

1

NEEDLE

BAR

1.

Needle

bar

height

adjustment

I

A

-

0

0

Turn

the

pulley

to

lower

the

needle

bar

to

its

2st

position.

Then

loosen

screw

©

and

move

the

needle

bar

up

or

down

so

that

the

uppermost

reference

line®

0!

pie

needle

bar

is

flush

with

the

lower

end

of

the

needle

bar

bushing

O

If

using

a

DP

x

17

needle.

adjust

the

needle

bar

so

that

the

reference

line

second

from

the

buttom

0

is

fl

ush

with

the

base

of

the

bushing.

2.

Needle

bar

stroke

adjustment

r

Turn

the

pulley

to

move

the

needle

bar

up

from

its

lowest

position

and

set

the

reference

line

a

second

from

the

top

of

the

needle

bar.

fl

ush

with

the

lower

end

of

the

needle

bar

bushing

O.

Then,

with

the

needle

bar

in

this

position.

loosen

bolt

Q

and

move

the

dr'ver

so

that

the

top

of

the

shuttle

hook

is

in

line

with

the

center

of

the

needle.

*

If

using

a

DP

x

17

needle.

adjust

the

needle

bar

so

that

the

lowest

reference

line

is

fl

ush

with

the

base

of

the

needle

bar

bushing.

3.

Driver

and

needle

contact

adjustment

O

0

•

• I

t

$

•

Turn

the

pulley

to

bring

the

top

of

the

shuttle

hook

into

line

with

the

center

of

the

needle.

Loosen

screw()

and

turn

the

eccentric

shaft

Q

so

that

the

needle

comes

into

contact

with

the

driver.

If

the

needle

is

received

deeper

than

necessary

it

may

cause

skipped

stitches.

Again.

if

the

needle

does

not

contact

the

driver,

the

top

of

the

shuttle

hook

ma

be

subjected

to

great

wear

and

tear.

Take

care

when

making

this

adjustment.

—

23

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Brother International LK3-B430 Service Manual - Page 23

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