Singer 191 D Manual

							High Speed Straigh\nt 
Lockstitch Sewing \fachine 
Instruction Manual and Parts List
® Singer is a regis\ntered trademark of \n \bhe Singer Company Limited or its af\nfiliated companies.
© 2009 Copyright  \bhe Singer Company Limited
191D
20 / 20C
30 / 30C
70 / 70C 
						

							\fontents
1Safety Instructions 1
1.1 Important Safety Instructions 1
1.2 Safe Operation 2
2 Product Description \nand \fachine Specification 3
2.1 Product Description 3
2.2 \fachine Specification 4
2.3 \fotor, \fotor Pulley and V-Belt Specifications\n 4
3 Setup and Adjustment Instructi\nons 5
3.1 \bable Cut-Out Drawi\nng 5
3.2 Oil Reservoir Installation 6
3.3 Belt Cover and Bobbin Winder Installation 7
3.4 Lubrication 8
3.5 \bhread \bake-up Lever Oil Supply Adjustment 8
3.6 Rotating Hook Oil Su\npply Adjustment 9
3.7 Needle Attachment 10
3.8 Bobbin Case Attachment 11
3.9 \fachine \bhreading 11
3.10 Stitch Length Adjustment 12
3.11 \bhread \bension Adjustment 12
3.12 \bhread \bake-Up Spring Adjustment 13
3.13 Knee Lifter Height Adjustment 14
3.14 Presser Foot Lifter Adjustment 14
3.15 Presser Foot Pressure Adjustment 15
3.16 Feed \biming Adjustment 16
3.17 Feed Dog Height Adjustment 17
3.18 Needle to Rotating Hook Relation Adjustment 18
3.19 Presser Bar Height \nAdjustment 19
3.20 \bhread \bake-Up Stroke Adjustment 20
4 \faintenance 21
4.1 \fachine Head Cleaning 21
4.2 Lubrication 21
4.3 Safety Inspection 21
5 \broubleshooting 22
  
						

							\fontents
6Parts List 23
6.1 Frame and Cover Components 24
6.2 Arm Shaft and \bhread \bake-Up Lever Components 26
6.3 Needle Bar, Upright Shaft and Rotating Hook Driving Shaft 
Components 28
6.4 Presser Foot Components 30
6.5 Feed \fechanism Components 32
6.6 Lubrication Componen\nts 34
6.7 Oil Reservoir Components 36
6.8 Belt Cover, Bobbin Winder and \bhread Stand Compone\nnts 38
6.9 \fachine Accessories 40 
						

							1High Speed Straight Lockstitch Sewing \fachine |  Instruction \fanua\b and Parts List
Safet\b Instructions
1.1
Important Safet\b 
Instructions
Important
•	Before 	running 	the 	machine, 	make	
sure 	a\f\f 	re\fevant 	safety 	specifica\b
tions	 are	adequate	 to	specifica\b
tions	 and	technica\f	 standards	 in	
your	country.
•	 The	 machine	 shou\fd	not	be	run	
without	its	safety	devices.
•	 The 	machine 	shou\fd 	on\fy 	be 	oper \b
ated 	by 	proper\fy 	trained 	personne\f.
•	 For	 your	 safety,	 gogg\fes	 must	be	
used	whi\fe	running	the	machine.
•	 Turn	 off	or	unp\fug	 the	machine
	
when 	the 	fo\f\fowing 	situations 	arise:
•	 Passing	 the	thread	 by	the	 nee\b
d\fe	 or	rep\facing	 the	bobbin	 or	
\fooper.
•	 Rep\facing 	the 	need\fe, 	presser	
foot, 	throat 	p\fate, 	feed 	dog 	and	
s\fiding 	p\fate.
•	 When	 the	machine	 is	in	 mainte\b
nance.
•	 When	 the	operator	 is	not	 run\b
ning	the	machine.
•	 In 	case 	of 	\fubricant 	oi\f 	contact	
with	 the	eyes	 or	skin,	 washed	 the	
surface	 with	p\fenty	 of	icy	 water	
with	 a	generous	 amount	of	co\fd	
water.	 In	case	 of	ingestion,	 seek	
medica\f	he\fp	immediate\fy.
•	 Repair, 	fitting 	or 	maintenance	
shou\fd 	on\fy 	be 	performed 	by	
proper\fy 	trained 	personne\f.
•	 Maintenance	 and	repair	 on	e\fec\b
tric	 equipment	 shou\fd	on\fy	be	
made	 by	qua\fified	 personne\f.	 If	
any	 e\fectric	 device	is	damaged,	
the	 machine	 shou\fd	be	immedi\b
ate\fy	stopped.
•	 Before	 starting	 the	machine	 in	fu\f\f	
running,	 a	test	 must	 be	conducted	
to	 assure	 that	machine	 and	opera\b
tor	are	ab\fe	to	perform	the	task.
•	 The	 machine	 shou\fd	not	be	p\faced	
next	 to	a	sound	 source	 as	an	 u\ftra\b
sonic	 we\fding	 machine	 and	other	
equipment.
•	 The	 machine	 shou\fd	on\fy	be	run	
with	 the	proper	 e\fectric	 cab\fe	and	
connectors,	 and	a\fso	 the	adequate	
grounding.
•	 The	 machine	 shou\fd	on\fy	be	used	
to	 sew	 materia\fs	 as	indicated	 in	
its	 instructions	 manua\f,	and	indi\b
cations	 of	use	 shou\fd	 be	fo\f\fowed.
Singer will not be held responsible 
for  any  damage  caused  by  unau-
thorized changes in the produ\nct.
When using the 
machine\f basic safety  \brocedures must 
be followed. Read  with attention all 
instructions before 
using the machine. When using it\f 
understand that  all basic safety 
instructions are 
not limited to the\c  following items. 
Read all instructions\f  take care of this 
manual\f and use it \c
as reference when  necessary. 
						

							2High Speed Straight Lockstitch Sewing \fachine |  Instruction \fanua\b and Parts List
•	 To	 avoid	 the	risk	 of	e\fectric	 shock,	
do	 not	 open	 the	motor	 wiring	 box	
and	 do	not	 touch	 the	components	
assemb\fed	inside	the	wiring	box.
•	 To	 avoid	 injuries	 do	not	 run	 the	
machine	 without	the	be\ft	 cover	 or	
in	 case	 any	other	 safety	 device	 is	
removed.
•	 To 	avoid 	possib\fe 	injuries 	keep 	fin \b
gers, 	
head	 and	c\fothes	 far	from	
whee\f, 	be\ft 	and 	motor 	when 	the 	ma \b
chine 	is 	running. 	Nothing 	shou\fd 	be	
p\faced 	near 	those 	parts.
•	 To	 avoid	 injuries	 never	put	your	
fingers	 next	to	the	 rotating	 hook	
and	 the	thread	 take\bup	 \fever	cover	
when	the	machine	is	running.
•	 To	 avoid	 possib\fe	 injuries	be	care\b
fu\f	 when	 putting	 down	or	\fifting	
the	machine	head.
•	 To	 avoid	 accident	 in	case	 of	a	sud\b
den	 start	 of	the	 machine	 a\fways	
turn	 it	off	 when	 \faying	 it	down,	 or	
remove	 the	be\ft	 cover	 and	the	be\ft.
•	If	 you	 machine	 is	equipped	 with	
a	 servomotor,	 it	does	 not	make	
noises	 whi\fe	being	 driven.	 To	avoid	
a	possib\fe	 accident	caused	by	an	
unexpected	 start,	be	sure	 the	ma\b
chine	is	turned	off.
•	 To	 avoid	 e\fectrica\f	 shock,	do	not	
run	 the	machine	 without	proper	
grounding.
•	 To	 minimize	 the	risk	 of	accidents	
or	 damage	 in	e\fectric	 components	
caused	 by	e\fectric	 discharge	 turn	
the	 machine	 off	before	 unp\fug\b
ging	it.
•	 C\fean	the	machine	periodica\f\fy.
1.2
Safe Operation 
						

							3High Speed Straight Lockstitch Sewing \fachine |  Instruction \fanua\b and Parts List
High Spee\f Straight \bockstitch Sewing Machine
Product Description 
and Machine Specification
2.1
Product
Description 
						

							4High Speed Straight Lockstitch Sewing \fachine |  Instruction \fanua\b and Parts List
2.2
2.3
Machine
Specification
Motor, Motor 
Pulle\b and V-Belt  Specifications
• ½ HP (400W) 2-pole (high sp\need) clutch motor
• \f type v-belt
Singer 
\fodel Application
\faximum
Speed [spm] Stitch 
Length [mm] Height of 
Presser Foot  by hand / by  knee [mm] Needle 
Bar 
Stroke  [mm] Hook 
\bype Hook 
Origin Needle Cat.
LubricationLubrication 
Oil
191D-20 Light to 
medium 5,000
5.05.5/13.0 30.7
Regular Standard
1955-01 #14
Fully 
Automatic 
Lubrication Singer “C” 
type oil
191D-20C
Koban/
Hirose
191D-30 \fedium to 
heavy 4,500
5.05.5/13.0 35.0 Standard
1955-01 #18
191D-30C Koban/
Hirose
191D-70 Heavy 3,000
7.05.5/13.0 35.0LargeStandard
1955-01 #21
191D-70C Koban/
Hirose
\fachine Speed [spm] \fotor Pulley Diameter [mm]
191C-20 / 20C 191C-30 / 30C191C-70 / 70C 50 Hz60 Hz
5,000 -- 125 105
4,500 4,500 -115 95
- 4,000 -100 85
- 3,500 -90 75
- -3,000 75 65
- -2,500 65 55
Table 1 – Machine Specification
Table 2 – Machine Spee\f vs. Motor Pulley Diameter 
						

							5High Speed Straight Lockstitch Sewing \fachine |  Instruction \fanua\b and Parts List
Setup and Adjustment Instructions
3.1
Table \fut-Out 
Drawing
Figure 1
535
200
480
115
+ 1
- 0
9520 6
28
10868. 1
339. 7
2-12.75
4-
R 1
02-R 18
2-12.75
2
-R
22.5
18
1
130
22
4-R 10
2-R2 0
2-R 20
2-R3 050
2-DEEP 17
2-80
4-R 10
28
66
33Ø8
.5
Ø2
4D EEP  1
15 9Ø
16D
EE P 
28
59
65
Ø1 865
2-DEEP 232-DEEP 18
130
1200
+ 1
- 0 
						

							6High Speed Straight Lockstitch Sewing \fachine |  Instruction \fanua\b and Parts List
Oil Reservoir 
Installation
3.2
The	 oi\f	reservoir	 shou\fd	rest	on	the	
four	 corners	 of	the	 machine	 tab\fe	
groove.
Two	 rubber	 seats	‘1’	for	 supporting	
the	 head	 portion	 on	the	 operator	
side	 ‘A’	are	 fixed	 on	the	 extended	
Two	 hinges	 ‘1’	fit	into	 the	ho\fe	 in	the	
machine	 bed,	and	the	machine	 head	
fitted	 the	tab\fe	 hinge’s	 rubber	‘2’,	
before	 the	machine	 head	is	p\faced	
portion	 of	the	 tab\fe	 by	using	 nai\f	‘2’,	
and	 the	other	 two	rubber	 cushion	 ‘3’	
on	 the	 hinge	 side	‘B’	are	 attached	 by	
nai\f	 too.	Then,	 the	oi\f	reservoir	 ‘4’	is	
p\faced	(Figures	2	and	3).
to	 the	 cushions	 ‘3’	on	 the	 four	 cor\b
ners	of	the	tab\fe	(Figures	4	and	5).
Figure 2 Figure 3
Figure 4 Figure 5
23.5mm
19 .5mm 
						

							7High Speed Straight Lockstitch Sewing \fachine |  Instruction \fanua\b and Parts List
3.3
Belt \fover and 
Bobbin Winder  Installation
For safety\f the 
belt cover should  be installed.The left and 
right \barts of the \c bobbin winder 
should be \barallel \c to the \blate 
belt slot on the  machine table.
\faution
Figure 6
Dri\f\f	 four	ho\fes	 ‘A’,	‘B’,	 ‘\f’	and	 ‘D’,	
in 	the 	machine 	tab\fe 	for 	screws	
(Figure	6).
Insert	 support	 ‘1’	in	the	 threaded	
ho\fe	in	the	housing.
Insta\f\f	 the	front	 be\ft	cover	 ‘3’	and	
get	 the	hand	 whee\f	 in	the	 midd\fe	 of	
the	cover	ho\fe.
Insta\f\f	 the	back	 be\ft	cover	 ‘2’	at	
ho\fes	‘\f’,	‘D’.
Fix	 the	 front	 be\ft	cover	 ‘3’	on	 the	
support	 with	screws	 ‘4’,	‘5’	and	 washers	
‘6’.	The	 tightening	 torque	
for	 the	 screw	 ‘4’	is	about	 30	kgf×cm,	
and	 for	the	 screw	 ‘5’	is	about	 25	
kgf×cm.	
Move	 the	back	 be\ft	cover	 ‘2’	back\b
ward,	 unti\f	its	rubber	 touches	 the	
front	 be\ft	cover	 ‘3’,	move	 it	again	 for	
0.5~1.0	 mm	and	fix	it	with	 screws	
and	washers.
Fix	 bobbin	 winder	‘7’	at	ho\fe	 A’,	‘B’ 
with	screws	and	washers.