Pfaff 234 is a high-speed sewing machine with a variety of features that make it a great choice for both home and professional sewers. The machine has a maximum sewing speed of 1,500 stitches per minute, and it can sew a wide range of fabrics, from delicate silks to heavy denim. The Pfaff 234 also has a number of built-in stitches, including both basic and decorative stitches, making it a versatile machine that can be used for a variety of projects. Additionally, the machine has a number of features that make it easy to use, such as an automatic needle threader and a built-in bobbin winder.
R 5315
PFAFF
234
High-Speed
Sewing
Machine
INSTRUCTION
BOOK
i-n
I
R 5090
Fis.20
/.
Hold the
bolonce wheel in this position
ond turn
lhe hook
on its shoft
until
its point
is
opposite the
center
line
of
rhe
needle.
Slightly tighten
whicheveÍ
hook
sel screw
con be reoched
mosl
eosily.
L
Check whether the hook point
is
obout
3ir."
(1.2
mm)
obove ihe rop
of
the
needle eye. If odiusiment is
required,
loosen
set screw
c
(Fig,
l9)
ond set fhe needle
bor ot ihe correct
height.
9. Check whether lhere
is
o cleoronce of .004" (0.1
point
ond lhe needle. Moke
sure thot the
hook
mm) belween lhe hook
point will
never
choíe
ogoinst lhe needle.
10. Tighleo
boih hook sel
scíews
pres5er
Íoot.
sêcurely
ond reploce needle plole
ond
To focilitote
setting
the needle
bor
ot
the
coírect height,
o smoll
depres-
sion
obout
t/e."
wide
hos been
milled into the
bor. When the needle
bor
hos reoched
the
lowest point
of its
siroke,
the top
of this mork
shoulo
oe
Ílush
with the boitom
edge of the lower
needle bor
bushing. The width
of
lhis mork
coincides with
ihe omount
of
needle
rise reouired
lo Íorm
the
loop.
In other
words,
when the needle
bor hos
risen obout
5/r."
Írom
the
lowesl
point
of
its
ltrole,
the
hook
point
should be
opposite lhe centeí
line
of
the needle.
This lost odjustment
pÍocedure,
however, is
not
prêcise
enough.
Inslruclions
Íor
Mechanics
17,
The V-Beh
Drive
When
mounling
the V.beli
for the
first time,
core should
be token thof
il
rs nol
forced
on
the motoí pulley
becouse
o
crookedly mounied
belt
weors
out ouicklv.
Íhe vorious
moto.s
used lo drive
ihe PioÍ.23.i
cre
siondord molors
con.
lorming
to
Germon DIN 42ó91
speciíico'ons. ïhey
ore
pivotolly
connected
wilh lhe
motor
brockei by meons
oÍ c
h n_qe
s:ud ond.
oíier
loosening
o
sel
screw
or
nul,
con be
swung to ony
des ea
cos
i
on
to
focilitote
mounr.
ing lhe
bell on lhe mochine
ond moto-
c- ers See
io:or picr.rrec
n
Fio. I7l
Fig
l7
The tension
musl noi
be set
ioo
tight
os
thrs
would
couse excessrve pressure
on lhe orm
shoft beorings
ond might result in
overheoting ond
seizing
oÍ
lhe
mochine.
The
bell
is lens
oned corrcclly ií you
con
cornpfess
il
obout
i!
oÍ on inch
midwoy
belween both
pulleys.
Tighten the h nge
siud nul
(or
set screw k on moiors
Fig. l7)
securely
so
lhol il will no; loosen
while
sewing.
18
Fig.6
R 4345
8. Choosing the Proper
Needle
The
Píoff 234 uses the Íollowing
round-shonk,
round-poini
needles:
Model A
System 134
nêedtes
Model B -
System l3J needtes
Model
C Sysïêm
134
needles
Necdle ond lhreod
Chort
Needle
Size Corlon
s itk
Synthetic
Lrnen
6l
:l
BO
90
't00
0
140
3
120r3
100/3
80/3
70/3
60/3
70t3
60/3
50/3
t30 3
130i,1
r
00.,3
100,I
80/3
80'4
70/3
-ó0i3
70t4-ó0,'4
50t3
- 40/3
5A/4
-
40/4
3Cr/3
30/4
30ió
200i
3 I50/3
140'3 - r
2c
3
I 20/3 - 100
3
r00/3-
80,'3
70/3
ó0l3
Oil seoler screw
2
(Fig.
l)
on
the
top
covoí hos two
oilwicks
qttoched
fo
it
whió providê
for
on odditionol
lubricotion
of the feed
eccentric
ono,
therefore,
should be sooked
with
oil
thoroughly.
Both
the verticol
shofr rop
beoring
ond the
upper bevel
geor
ossembly
con b6
oiled
qÍter
tqking
out
cop screw
3
(Fig,
1). The needle
bor is
lubricoted by
meons
oÍ on oilwick
which
leods
down
Írom
the tqke-up guord
ond
is
jooked
with
sproy oil.
Form lhe.
hobii
oÍ
pufting
o drop
oÍ
oil
into the
hook rocewoy
severol
lrmes
o cloy.
Cerloin. sewing
.lroubles,
such
os lhreod
breoking
ond stitó
skipping,
connol be
remedied by
opplying excessive
quonlities
of
oil. Excess oil
qno
lint tend
lo form o
pocked
moss
which, in time,
will couse
hord running
oÍ
ihe moóine
ond soiling
of the work.
Mokr
it o rulc, thereÍore,
to
qpply
oil rporingly
but regulorly.
Alwoys use PfofÍ
sewing mochine
oil No.28GllmI22
whió is completely
non-resinous.
Although
the bevel geors
ore
enclosed
in
coses
ond require
no speciol
moin-
lenonce, il is recommended
to
reploce the
old
greose
by Pfoff
greose
No.
2&-l-12O
213 once
o
yeor.
Owing fo
the
speciol
Ébricoting
propeities
of this
greose,
the flonks
of the bevel
geor
teeih
should be greoled
only lightly.
From
lime to iime,
unscrew the needle
plote
ond remove
lhe lint which
hos
occumuloted
on the Íeed
dog ond in the
viciniry oÍ the
sewing hook.
This ir
very impo.tont
becouse this
lint contoins smoil porticles
of dressing
which
couse
excessive weor
of the sewing meóonism.
On moclrines
which
oÍe in
opeÍolion constontly,
the lini musl
be removed
every doy.
5, lemoving
the Bobbin
Cose
Roise the toke-up
lever to its
highest
position
ond
open the bed
slide. Reocn
under lhe toble
wiih
your
left
hond ond
open the bobbin
cole
loích with
the
noil
of
your
thumb. Pull
out the bobbin
cose
by holding rhe
lotch with
thumb
ond ÍoreÍinger,
os shown in
Fig.4.
While
you
hold the
bobbin
cose
by its
open lotch, the
bobbin connot foll
out.
6. Winding
rhe
Bobbin
Bobbins
ore wound wilh lhe power-driven
bobbin
winder
(Fig.5),
which
requires
no lub.icotion
since its
spindle runs
in
q
sinlered steel
bushing.
A bofÍle
plote
mounled
on the
winder
bose
prevents
the lhreod from
berng
pulled
loword the driving
belt by ihe
droÍt
of oi.
cqused by the
belr. Thé
V-groove in the rim
of lhe winder pulley
hos on
obtuse-ongled
profile
which
permih
lhe
use
of both round ond
V-belts.
1
2
3
4
5
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