Pfaff hobbylock 774 Owner's Manual - Page 2

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CONTENTS A. Parts names 2 B. Preparation for the sewing 4 a. Preparation 4 b. Fitting the foot controller 4 c. How to adjust the foot controller 4 d. Turning on / off the lamp 4 e. Labrication 5 f. Opening and closing looper cover and side cover 6 g. Threading procedure 6 C. Operating the machine 9 a. Test sewing 9 b. Thread tension adjustment (Normal hemming) 9 c. Dial chart for thread tension adjustment 9 d. Relation chart for fabrics and thread stitch length 10 e. Correct thread tension 10 1. Incorrect thread tension and how to adjust 11 g. Roll hemming 12 h. Points to obseave during sewing 13 i. 3-thread overedge seam 14 D. Some adjustments / Maintenance 15 a. Adjusting the seam width 15 b. Adjusting the stitch length 15 c. Replacing needle (s) 16 d. Replacing the upper knife 17 e. Replacing the lower knife 18 f. Replacing the light bulb 19 E. Sewing problems and solutions 20

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CONTENTS
A.
Parts
names
2
B.
Preparation
for
the
sewing
4
a.
Preparation
4
b.
Fitting
the
foot
controller
4
c.
How
to
adjust
the
foot
controller
4
d.
Turning
on
/
off
the
lamp
4
e.
Labrication
5
f.
Opening
and
closing
looper
cover
and
side
cover
6
g.
Threading
procedure
6
C.
Operating
the
machine
9
a.
Test
sewing
9
b.
Thread
tension
adjustment
(Normal
hemming)
9
c.
Dial
chart
for
thread
tension
adjustment
9
d.
Relation
chart
for
fabrics
and
thread
stitch
length
10
e.
Correct
thread
tension
10
1.
Incorrect
thread
tension
and
how
to
adjust
11
g.
Roll
hemming
12
h.
Points
to
obseave
during
sewing
13
i.
3-thread
overedge
seam
14
D.
Some
adjustments
/
Maintenance
15
a.
Adjusting
the
seam
width
15
b.
Adjusting
the
stitch
length
15
c.
Replacing needle
(s)
16
d.
Replacing
the
upper
knife
17
e.
Replacing
the
lower
knife
18
f.
Replacing
the
light
bulb
19
E.
Sewing
problems
and
solutions
20