Pfaff hobbyblock 794 User manual
74
0
Instruction
manual
I
Notes
on
safety
A)
Due
to
the
up
and
down
movement
of
the
needle,
the
user
must
take
sufficient
care
to
avoid
injury
and
observe
the
sewing
area
continuously
while
sewing.
B)
When
leaving
the
machine,
changing parts
or
accessories,
the
machine
must
be
disconnected
from
the
power
source.
C)
The maximum
approved
wattage
of
the
light
bulb
is
15
watts.
D)
The
drive
belt
must
never
be
adjusted
by
anyone
but
an
authorized
Pfaff
agent.
Contents
The
controls
of
the
sewing
machine
2, 3
Accessory
box
4
Electrical
connection
4,
5
Foot
control
5
Preparing
for
threading
6,
7
Threading,
4-thread
double-overedge
seam
7—11
Threading
right
looper
8
Threading
left
looper
9
Threading the
needles
10
Inserting
the
lint
box
11
Sewing
test
12
Points
to
observe
during
sewing
13
Securing
the
seam
14
Checking
and
adjusting
thread
tension
15, 16
3-thread
overedge seam
17
Thread chart
18
Adjusting
the
stitch length
on 794
18
Adjusting
the
stitch length
on
796
19
Adjusting
the
differential
feed
on
796
20,21
Regulating
the
sewing
foot
pressure
18
Adjusting
the
seam
width 22
Changing
the sewing
feet
23
Sewing
rolled
hems
24,
25
Changing
needles
26
Changing
lower
knife 26, 27
Changing
upper
knife
28
Changing
light
bulb
29
Cleaning
the
thread
tensions
29
Oiling
the
machine
30
Sewing
problems
and
solutions
31
Accessories
32
Specifications
32
C,’
Controls
of
the
sewing machine
1
Foot
pressure
regulating
dial
2
Thread
guide
3
Carrying
handle
4
Left
needle thread
tension
dial
5
Right
needle thread
tension
dial
6
Right
looper
thread
tension
dial
28
7
Left
looper
thread
tension
dial
cover
///
2
11
Presser
foot
lifter
lever
--
/
12
Hand wheel
and feed regulator
13
Looper
cover
26
‘N
14
Looper
cover
lever
15
Work
support
16
Stitch length
setting
key
on
794
Differential
feed
setting
on
796
17
Needle
plate
18
Presser
foot
19
Needle
bar
20
Thread
reel
stand
27
21
Thread
reel
pins
22
Adjusting knob
23
Machine
plug
socket
24
Master
switch
_______________________________________
25
Lint
box
26
Foot control
27
Foot control
plug
28
Mains
plug
29 Lower
knife
30
Knife
clamp
screw
9
31
31
Right
looper
32
Left
looper
33
Thread
guide
bar
32
30
if
29
I
Accessory
box
Electrical
connection
Use this
machine
only
on
a
flat
surface
or on
a
special
sewing
table.
Attaching
the
toot
control:
Insert the
plug
of
the
control
into
the
machine
plug
socket.
Then
connect
the
mains
plug
to
a
power
source.
Caution:
When
the
machine
is
not
in
use,
disconnect
plug
from
power
source.
Do
not
place
any
objects
on
the
foot
control.
Swing
the
work
support
to
the
left
and
pull
out
the
accessory
box.
To
replace
the
accessory
box,
slide
it
into
the
grooves
and
push
it
until
it
locks. The
accessories
are
illustrated
on
page
32.
Foot
Control
The
speed
of
the
HObbyIo
is
regula
as
follows:
When
press,g
the
foot
Control
gently
the machine
will
run
at
low
Speed.
when
Pressing
harder
it
will
run
faster.
Electronic
foot
control
Maximum
speed
is
adjusted
in
two
grad
5
by
the
switch
on
the
foot
control
Pos,ho,,
=
Half
Speed
Posillon
4
=
Full
speed
Switching
the
machine
ON
and
OFF
Power
and
sewing
light
are
switched
on
and
off
simultaneously
with
the
master
Switch
SWitching
on:
Press
switch.
Machine
and
sewing
light
are
switched
on.
Switching
off:
Press
switch
again.
Machine
and
sewing
light
are switched
off.
Preparing
for
threading
Adjustment
of
thread
reel
stand:
Loosen
the
adjusting
knob
on
the
thread
reel
stand,
slide
it
to
the
left
and
tighten
it.
Adjustment
of
the
thread
guides:
Pull
up
the
thread
guide
bar
and
align
it
j
so
that
the
thread guides are
directly
above
the
reel
stand.
JL_L_LjjJ
L
N
Carrying
handle
and
thread
guide bar
behind
it:
\
Insert
fingers
into
the
groove
of
the
carrying
handle
and
pull
it
up.
This
movement
automatically
raises
the
zr’
thread
guide
bar
Opening and
closing
looper cover
and
work
support
Push
looper
cover
lever
to
the
right,
swing
cover
in
the
direction
of
the
arrow
and
lower
it.
To
close
the
looper cover,
push
the
cover
until
it
locks.
To
open
the
work
support,
push
it
to
the
left.
To
close
the
work
support, push
it
to
the
right
until
it
locks.
A
threading
diagram
is
affixed
to
the
machine
(A).
Threading
procedure
Threading
must
be
done
correctly
to
obtain
a
well-formed
seam.
Thread
the
machine
in
the
following
sequence:
1.
Right
looper
(red)
2.
Left
looper
(orange)
3.
Right
needle
(green)
4.
Left
needle
(blue)
Diagram
B
shows
threading
of
the
thread guides
behind
the
carrying
handle.
Diagram
C
shows
threading
of
the
thread
tension.
Now pull
the
respective thread
into
the
corresponding guides
and
tension
discs.
7
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This manual suits for next models
1
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