Rimoldi B29 User Manual

Rimoldi®

SPARE PARTS CATALOGUE

CATALOGO PEZZI Dl RICAMBIO

CATALOGUE RECHANGES

ERSATZTEILELISTE

8-29

_.._,

li.4

From the library of: Superior Sewing Machine & Supply LLC

I N DE X

INTRODUCTION

-1	- MACH I NE IDE NT·IF.ICATION

II TECHNICAL DATA BY MACHINE CLASS

III TECHNICAL SPECIFICATIONS

INSTRUCTIONS

	I	INST.ALLAT ION, AND T IM·ING
a -	Positioning of He ad
b -	Assembly of Transmission
c -	Whrication

d- Msembling and Adjusting Sewing Parts e - Positioning of Presser footArm

f ~Setting of Front Cover Plat:e

g- N!edle Thread Take-Up Adjustment. ~- Se~ting of Thread Take-up Cam

	. II	-	U .S E
a -	Threading
b -	Ol.anging		the N!e d l e
c - Setting the Presserfoot

d.- Setting of Tensioning Discs e - Stitch Length Adjustment

f - Adjustment. of Seam Width

g- Problems due to improper handling of machine

III - MAINTENANCE

a ,.:_ Every Day

b - Every Week

c - Every Three Months

d- Sharpening the Knives

e - Changing of Main Shaft ( if required)

SPARE PAR~S CATALOG

Page 5

''6

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, ,

, ' 9

''9

! , 15

''15

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, , 16

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,' 17

,, 17

''17

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, ' 19

''19 ''19

''19

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''19

	I		HOW TO	USE TillS	CATALOG	23
	I		HOW TO	USE TillS	CATALOG	''
a -	Introuuction					.' 23
b -	Procedure					23
						''
	II	-	IJOW TO	ORDER		''
						23
a -	All Parts					'! 23
b - Needles						''
						23
	III		TABLES			25
						''
	IV	-	NUMERICAL INDEX		OF PARTS	85

From the library of: Superior Sewing Machine & Supply LLC

--- ·-~-- -~-- ------ -

~-- --

From the library of: Superior Sewing Machine & Supply LLC

I.MACHINE IDENTIFICATION

a)ldentificati"9n Nu•bers

1.Each machine is identified by;

-Class or Sttb....Class Nunher

- Serial Nunher

2.·the Class or Sub-Class Ntunber 1s indicated on the ·Name-Plate, held by two screws on.the base of the.machine.

3.The Serial Ntunber is punched on the back of the machine bas~.

II. TECHNICAL DATA BY MACHINE CLASS

The mac~ines depicted in this catalog are overedg ing					machines of 2 needles, the
needle to the left forming a chain stitch and the				needle to the right for the ·
overedging. Thus this stitch formation becomes a				'safety		stitch'.
The machines have the following, general charactei"is'tics:						·
1.	Straight Needle, system RIM 27- thickness		80-9o.:..too~UO.
2.	Differential can be regufated while• machine		is	running.
3.	Push-Button St.i.tch Length Adjustment.	.
•1.	Stitch Length Variation from 7 to 18 stitches. pe ~				inch.
5.	Differential Feed Ratio: up to 3, 5 ~ ·1	as well		as	4: 1.
6. Width of Bight: frbrn 5/32 inch to 7/16 inch.
7.	Speed; up to 5 . 600 RHvt. .
8. Lubrication: by pump..
9.	Motor: 1/3 HP ·or 1/2 HP, depending on the t.ype			of application and manufact;ure.
10.	Outer dimensions of machi~e head: 12" X	9.3/4".
11.	Weight: about 46 lbs~

From the library of: Superior Sewing Machine & Supply LLC

~~·---~-~-·· -~- ~----- --

~ -----~-

Ill. TECHNICAL SPECIFICATIONS

TECHNICAL

CHARACTERISTICS

SPECIFIC

Ill

width

N. of

MACHINE

Ill

APPLICATIONS

Cl)

stitches

SUBCLASS

...

gauge

Cl)

ATTACHMENTS

...,

....

. ,;:;

to the

....

,;,:

J;:

bight

inch

0.29.0

3/32''

5,5

7,5-18

yes

Shil'ts!

c~oth

general

2,5

mm.

B. ·29 .1

3/64

7,5-18

yes

Shirts;

cloth

general

1 mm.

B.29.1/B

3/64

7-,5-18

yes

Shirts,

fine

cloth in

general

111111.

0.29.1/PUU

3/64

7,5-18

yes

Shirrihg

Curtains,

bed-spreads,

1 mm.

Attachment

cloth

general

3/64

Shirring

Cloth

general.,, inser-

B~29.1/PDUO

4,5

7,5-18

yes

Attachment

tion of folded tape and

1 mm.

ornaJtental

cord

Trousers

confection

0.29.17

13/64

10,5

. 7-16

yes

in general-

5 11!11.

1J .. 29.17/PDB

13/64

Shirr in~

Bed-spr~ads,curtains,

10,5

7-16

yes

et.c·.

Attachment

mm.

SMrr;l.ng

Cloth

general,. inser-

B. 29. 1 7/PD!.JO

13/1!4

7-16

yes

t1on.of·folded tape ahd

11111.

Attachment

ornall!ental

cord

8~29.174

13/64

10,5

7-16

yes

TJ:ousers

confection

m111•.

in general

B.29.7

3/32

shirts-cloth-confection

7,5-18

yel5

in general

2,5

•••

U.29.7/R

3/32

7,5-18

yes

Reinforcing tape

tnser-

tion into

sea!lls

2, 5

IIIII,

1----·

8.29.7/W

3/32

Electric

.Shirts-cloth-confection

7,5-18

yes

cutter

in general

2, 5

IIIII,

ch11.in

8.·29. 7/PDB

3/32

7,5-18

yes

Shirring

Cloth in general, bed-

Attach11en t

spread's.

curtains

2, 5 ....

6,5

Shlrrlng

Cloth in general, inser-

B.29.7/PDBQ

3)32

7,5-18

yes

tion of

fold-ed tape and

~.~~

m.i•.

.7,11

Attach11en t

or·na•ental

cord

)}_. 29. 78

3/32

yes

Cloth

general-overed.o

6,5

7,5-18

ged sea•

curled

downw·ard

:r,5 ...

From the library of: Superior Sewing Machine & Supply LLC

l \

INSTALLATION

and TIMING

-THREADING

- .MAINTENANCE

From the library of: Superior Sewing Machine & Supply LLC

I.INSTALLATION AND TIMING

a)PositioninK o~ head

After mot~r is mounted on stand, proceed as follows·:

1.' See	that	machine cradle	is sqnare,to	table	top {fig, 1).
2. See	that	machine· rests	evenly on all	four	rubber insulators.

b)Assembly of tr~nsmission

1.Line up-driving belt square to machine and motor pulleys {fig. 1).

2.Make sure that back of d1:iving belt rides firmly and squarely on top of pump pulley, It is very important that the driving belt

is	lined up so that it will not slip· from
the	pump pulley.

3.Check the tensions of the belt by loosening the clamp of the .motor.

4.Level the head of the mac.hine by means of the machine cradle.bolts.·

5.Lock the counter nuts of the machinecradle

bolts,
NJIE: the driving .wheel of the machine runs
in a clockwise, and thepump in a counter-	fig. 1
clockwise rotation.

c) L u b.r i cation

l:l.Ji:lscrew cap_ 'A' (fig._ :n.

2.Pour one quart _Teressa 43 oil into machine using funnel 'B',

3.Check Oil-level ·(red tip of oil indicator

must be bet~een both red lines of oil levei indicator glass 'G~). ·

4.Replace and tighten cap 'A'.

5.Put a few drops of oil on the. needle clamp

guide rod and upper looper bar before
starting machine.	·	·
6. Start machine.slowly making sur~· that oil
is circulating (~heck		spyhole: 'A'). After
5 Minutes, increas~.sp~ed gradually to
normal working speed.
l'DIE: Change oil every three months. Rinse
out reservoir and. filters with kerosene or
other commercial_c;leanser and. replace with
fresh ~il. Insure th~~ough removal ~~			fig. 2
cleanser before	replicing f~esh oil.


d)	Assembling and adjusting sewing parts
Note:		the following operations			serve to adjust the timing of the machine:
1. Timing		gauges required:
-	S 1665.00		for·all operati"ons		of overedging.except No.-4 (fig. 4) and
	c hainstitch operation (fig,			11 & 12) ..
-	S 1555.00 for		ope.ration No. 4	(fig.	4}..
-	S 1708.00 for		chainstiteh (fig. 11 &12)
2.Preliminary DisassembLy of:
-	Front Cover Plate
-	Both thread tlllke:..ups· of)ower looper holder
-	Side Cover Plate (casing) of needle movement
-	Main Feed Dog		·· · ·		·
. -	Upper Plate holding thread tensions
-Upper Plate with·oil ·indicator cap
-	From the library of: Superior Sewing Machine & Supply LLC
	Front· cover of chainstitch rod assembly

------- ---------------~-~~-----

fig. 3

4.Setting pri~ary looper (fig. 4)

SETTING OF' HEIGHT

- Looaen screw	'E'
-Mount looper	height gauge No •. S 1555.00

on the primary looper shaft with special screw supplied with gauge as shown in (fig. 4).

- Raise or lower looper so that its point

contacts the upper	line	on timing gauge
No. s 1555.00.	.	.

-Slightly tighten·screw 'E'. (fig. 4).

-Set thread guide bracket 'A' by raising

thread guide bracket to the top of the primary looper shank.

- Ret~ghten screw 'B' and 'E'.

-Remove looper height gaqge No. S 1555.00,

SETTING OF ANGLE

3. Setting of .overedging needle (fig, 3}

-If the need"!e plate is in proper position the needles must be centered for passage through the respective needle hole· of the needle plat.e.

-The distance between the point of the needle plate is 3/8 inch when the needles

are	at their highest position.		·
- I£	adjustment	is. necessary,. loos':!n		screw
·'A;	(fig. 3)	and move needle	bar	clamp

up or down using needle gauge S 1?65.00 as indicated in (fig. 3) to obtaw·the correct setting,

-Retighten screw 'A'.

fig. 4

-Loosen slightly screw 'D'.

-Rest timing gauge No.· S 16155.00 (fig. 5) on the milled surface of the base and adjust

looper lever 'C'	(fig. 4) forward or backward on primary looper lever	'C' on-
til t"he correct	angle of the looper is· obtained on timing gauge·S 1665.00 (fig.	5).
- Retighten screw	'0' ·and· 'E:.' .

SETTING THE PRIMARY LOOPEI\ IN RE~ATION TO THE NEf:DLE

-·When the primary looper has completed its stroke to the left and with the needle in its lowest po~ition, .the distance between the point of .the looper to the needle is 1/64 inch (fig; 6).

-If adjustment is required,.loosen screw 'D:'(fig. 6) and move looper holder 'C'

left or right to.the proper ~~tting.

-With primary looper set as: shown in (fig, 6,, adjust looper holder 'C' ·

forward or backward on primary looper shaft so that looper passes the needle on its stroke to the right as close as possi~le above the center of the needle scarf, and on its ~troke to the. left, below the center of the needle scarf

with no deflection to the needle.
From the library of: Superior Sewing Machine & Supply LLC
- Retigh~en screw 'D'.	· ·

fin ;

r· -- · -----

5.Settin~ of secondary					looper
-Note: To obtain the distance of 11/32.,'
as		indicated in f:lg. 9,		move		lever		'E'	up
or		down considering		that		in." ~oing			so;
the setting in fig. 7 and B increases or
decreases.
·- Slightly loosen screw 'B'					and		1 A'			·"""';" 'i'
-	Adjust. crossing		of secondary			and primary
		looper, turning	the l?econdary				looper		so I	':·;;,<:~·
		that its poirit -,passes·.as			Close		as	possi-		·
	ble behind th~-primary looper witho~t
	touchin •								.
.,... OJ.eck the distance indicated						in ·fig. 7-8--9. ·
-	The •Secondary looper,,			in	its stroke from
		left to rightt must pass the needle as
		close as possible without touching.
	If adjustment l.s needed,				loosen slightly
fig_. 7	screw 'D' and push the				comp,l~te			looper		fig· 6
	driving assembly with bushing 'C'							forward

or backward as required to obtain the proper setting.

- Special c&re must be taken when adjusting the secondary looper assembly, to maintain a perfect alignment between secondary looper driving arm 'E' and secondary looper pivot sleeve in bushing

'C'.

-Retighten screw 'D'.

-Check crossing of both loopers. as well

as all ot~er settings.	. .
-.Retighten. screws 'A'	and 'B'.

-Machine must turn freely after adjusting ~he secondary looper. assembly.

fig. 8

fig. 9

fig .10

6.Setting the needle guards (fig. 10)

-To set the needle guards, mount needle guard 'D' on needle guard 'A; and tighten

it slightly with screw		'B',
. - Set	needle guard 'D'	with screw 'C' on
the	machine base.	·

-With the needle in its lowest position, set front needle guard so that point of

primary looper, in its stroke from left to right, barely touches needle.

-'Tighten screw 'C'.

-Set needle guard 'A' close to ·the needle

	while needle is in its lowest position,
-	Tighten the needle guard with screw 'B' .
·-	Insert needle; bring iri to its lowest
	position pushing it slightly against
	needle guard 'Aj.

-	The	thread must run freely.· If this is not the case, it means that the needle is too low
	and that the thread is pressed between needle and needle guard.
NOIE:		The point of the looper,· in its stroke froot left to right, must enter the needle
Scarf		From the library of: Superior Sewing Machine & Supply LLC
		in its upper portion,- and in	its stroke to the left, in its lower portion.
-	For very hard sythetic fabrics,		the needle must touch the needle guard considerably.

7- Setting the chain stitch looper (fig, 11)
-	Insert holder bushing on	leg of Chain Stitch Looper.
-Set this on· looper holder		and tighten it slightly with set~screw 1 A',
-Check angle of -looper using gauge No. S 1708 (fig. 12).
-	Tighten screw I A'.
-	Wi~h the looper in its furthest_ position on the		left,	se~ dist~nce between needle and
	point of the looper using eccenter 'B',
-While ·doing this, be sure		to have the m~imum eccentricity of eccenter '8'·,. downw!lrd,
-	Tightt;n the· ec~_enter ~ith	set-screw •c,	..
-Slightly loosen screw 'D'		and move. looper holder	'F'	so that the point of looper 'C'
	enters the need!~ scarf as-close .as pos~ible without			touching.

-Tighten. screw 'D'

-Set the needle plate and move the needle downward so that its point protrudes the lower

sur;ace of the needle plate,			.
·_Pull	the ne"edle	forward, towards the	operator, with slight pressure, ~nd con-
tinue	moving the needle downward.
-'This is to check that the point ·of the needle			does not pass in front of the looper,. but
always	leans on the	looper blade.

fig .12

8-Setting of trinmer.knives

SE'FTING tOWER TRIMMER KNIVES {fig. 13)		fig . ll
•,
- ..Loosen screw 'A! ,	.

-Slide bottom knife_ 1 0' upward until cutting--edge of knife. is flush with the top surface ·of the needle plat·e,

-~t(ighten screw 'A' ,

SETTING UPPER TRIMMER KNIFE (fig,

Pi!i.Ce upper

knife

in upper

knife' holder 'A'.

Mo'unt. upper

knife

holder block

'0' and trinming guards 'E' and 'G'

with screw

'F',

- Tutn handwheel clockwise until

upper knife holde.r block 'A'

is ~n

its lowest

position.

Slide

upper

knife

'C'

against

lower. knife

'D'

(fig;l3)

and

check

to see that

cutting

edge

of top

knife

overlaps l/16 inch

the

cutting edge

of the bottom knife. If adjustment

is required,,

move

upper kn~fe holder block 'A'

left or· right until

the conditions descri-

bed above, are obtained.

-Retighten screw 'F' ,

-Turn handwheel clockwise until upper

knife holder: bloek' 'A'is. in its uppeFmast position.

- Loosen• screw 'N' (fig. 13),

-Activate lower knife holder 'C' by h~nd to the left,

-Release lower knife holder so that ~nife

holder pressure spring will apply the correct pressure to the cutting edges of the trimmer knives. At no time· should

-pressure be applied against screw 'A' when setting the trinmer knives,

-Retighten screw 'N'.

Set needle guard 'P' far chain stitch
needle,	on ·knife holder and slightly
tighten	it with 'screw 'Q' (fig. 13).
~-Set the needle so that the point of th~
looper, in its stroke to the right,
b~rely touches the needle.		Sewing Machinefig&• 13Supply LLC
- Tighten needleFromguardthe librarywith screw·of: Superior(l .
	1

9-S~tting of feed dogs (pag. 14 and 15)

REAR AND CHAINING FEED DOG

-Remove. plexiglass plate under work. plate.

-Turn' handwhe.el clockwise until needle point is just e"ntering· the needle hole in

the	needle··plate.	.
· - At	this point loosen screw 'F' (fig .14.)
and raise or lower. feeu dogs •c: and 'D'
so t4at half the .depth of the teeth of			f.j g. 13 a
the f~ed dog are above		the top surfae~
p£ the needle plate.
-Retighten screw 'F' (fig.		14).

DIFFERENTIAL OR FRONT FEED DOG

-Set the front feed				dog 'E' (fig. 15) in
	slot on differeritia.l feed leyer with
	screw 'G'
-	Loosen	screw 'G' slightly.
- Raise		or	lower front feed dog until its
	height	is	even with the rear feed			dog.
-Retighten screw 'G'				(fig. 15).	It	may
	h~ ne~essary in some cases td lower
	chaining		feed dog	'C' (fig. 14) for
-	chaining off purposes,
	In the event it is			fotind necessary to
	tilt feed dogs, loosen screw 'A'				(fig.l5)
	and turn eccentric			'B' (fig: 15) in the
	dir~ction required to get the pr0per
	setting.
-·Retighten screw 'A' .
-	Replace plexiglass cover,

fig • 14

fig. 15

10-Adj u_stment			of differential Qf. front feed (fig. 16)
Not: e :th~ machinP.s. depicted. in this					cat;alog, are delivered with the feed already set for the
wor~ to which they are destined,
For eventual I			other adjustments of		feed,	proceed as follows:
Annu~ling of.DQfferential feed:
-	Loosen	nut	'B'	by ·means of wrench	'A'	supplied· with machine
-	Raise	lever	'Z'	to its highest position

-Retighten nut 'B'

-Lower.lever 'H' tostop 'F' and tighten nut 'R' ·rafferential'Feed R~tio 2 : 1

-	Loosen nut	'B' .	.
-	Raise screw	'Q' to i'ts highest position
-	Retighten nut '.B'		··
- set lever 'H' against stop 'G'
Differential Feed Ratio 3,5 ·				1
-	-i..oosen· nut	'B'	·
-_Set screw 'Q; to			its lowest	point

-RetightenFromnutthe'B' library of: Superior Sewing Machine & Supply LLC

-· Set lever· 1H' against st()p. 'G'

,-.-~------

·-----

·---------

Differential Feed· Ratio 4 :							l
-Raise 'C'			to .its		highest		posiitioh on slid!'l-har 'S'
-Loosen nut			'B'
-	Set screw		'Q'	to	its	lowest position
-&tighten nut				'B'
-Set. lever			'H'	against		stop		'G'
- Using lever 'E' on.e obtains								the required Differential adjustment while machine 1s running.
Net.agive Differential Feed							·
-	lnosen· nut		'B'
-	Set	screw	'Q'	to	its	highest po~1t1on
-	Set	'C' to lowest			position on slide-bar 'S'.,

fi«. 16

From the library of: Superior Sewing Machine & Supply LLC

e) ~o~itioning of presserfoot arm (fig. 18)

-Press down on. lever 'B''(fig. .. ·22) and swing o~ presserfoot holder 'D! (fig.l8)

-Loosen slightly screw 'B' (fig. 18) to

	release spring pressure on lifter lever
	arm 'A' (fig.	18).			A
-	With lifte.r	lever arm 'A' in a vertical			A
	position, press down on presserfoot arm
	'L' untiL it re~ts on·pin			in casting.
-	Holding presserfoot arm shaft			'L' in its
	lowest position,		apply spring pressure
	to lifter lever		arm 'A' by	setting it

in approximately a 45° angle.

-Remove end-~lay in presserf~ot arm shaft

'L' by applying slight pressure on lifter

aim 'A' and press~rfoot arm shaft ag~inst

bushing 'C' .

-Retighten screw 'B' .

-Swing back in position presserfoot holder 'D'.
-	Lift up lever 'B' (fig. 22) to engage presserfoot holder arm.
-	Connect presserfoot lifting foot	pedal with lifter	arm 'A',
-Rotate handwheel clockwise until		secondary looper	has completed
-	Lo~en screw in stop 'M' 1(fig. 18),

fig. 18

its-movement .to the "left.

-With pr~sserfoot raised in its highest position, set stop 'M' so that presserfoot do~s not strike looper.

-Retighten scre.w in stop 'M'.

f) Setti~g of front cover plate (fig. 19)

- Setting of the front cover plate 'C' (fig. 19). is done with the covet' plate

. closed.

-The movable part 'C', should be· set as far to the left as p6~sible without

	interfering· with the front	needle guard
	or the lower knife holder.
-	If adjustment is required,	loor>en nut 'A'
	and move cover plate 'C'	to the right
	or .le:f~ as may be necessaq. by adjusting
	screw 'B.'.
-	Lock nut 'A'	fig. 19

g) Needle thread take up adjustmerit (No. 5 ..... table 9)

-When sewing ve£y hard cloth, set the needle thread take up 270-274/2 sliding

it forward, towards the operator.

h) Settin~ of thread take up cam (fig. 20)

-	Slightly loosen both screws	of cam.
-	Rotate machine pulley: clockwise.	·

-Be~ot~ needle reaches its uppermost

position, the highest profile of the cam must begin to take up the thread of the looper.

- RetightenFromboth screwsthe libraryof cam.of: Superior Sewing Machine & Supplyfig. 20 LLC

II.USE

a). threading

...1~ /

f--\1, I

a-- la:,

= - . ,I

I•..

!...,.....__.- :'

~~---.1

THREADING OF CHAINSTITCH LOOPER

J~ I

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829·0

29•17PDBO

29•18

29·1PDB

! I;

29·1PDBO

_ _J

29•17

,~..,....?7',

29•17 PDB

29·7PDB

29·7

		29•7PDBO
	~	29•7R
	~	29·78
		29·78
	fig. 21

From the library of: Superior Sewing Machine & Supply LLC

~) Changing the needle (fig. 22)

1 - Turn of£ motor,

Rotate handwheel clockwise until needle

is at its highest position.·

3 -

Pres~ down

lever

'B' (fig. 22) and

G-~"----t-

4 -

swing out presserfoot holder .,D'

(fig,l8)

LOosen th~ needle~set

screw by'half turn

and remove needl~.

Insert new

needle with scarf ·of needle.

,facing towards rear.of the machi~~. Care

mus.t be taken that the needle is pos-i-·

tioned in its upmost

position wit;h:i,n ·.the

needle-holder. .

·6 -

Retighten needle-set SGrew;

fig. 22

Setting

tensioning

dises

Tighten the

tension discs ·(fig. 21) sufficiently as

to permit a regular

stitch.

formation.

· ·

Do not tighten too much,

.c) Setting the p~esserfoot (Jig, ~2)

1.- With presserfoot arm· •n•

(fig.

W) locked

in position,

turn handwheel. clockwise

till

needle point

en~ers presserfoot.

Loosen screw

'F' ·(fig.

22) and center presserfoot

in relation to the

needle.

3 - Retighten screw-'F'

22)

To increase or "decr~ase. the pressure of the presserfoot,, loosen screw

'G'

(fig.

with wrench No. 63.3-;742,

and turn knob 'N

(fig,

2_2).

Retighten· screw

'G'.

Stitch length a!ljustiUent

(fig. ·16)

1·-'Unscrew c·ap

'T 1 of plexig.lass plate

-Loosen screw

'L' of eccenter.

Set screw. '0' ·of stitch

length adjustnent. Rotating to the right (clockwise) stitic:h

lengtli is shortened..

4- Tighten ..screw. 'L'

5- Rep.J.ace cap 'T'

f)A~justment of seam width

1he width of the.seam may be adjusted to a very.limited extent beyond which it is neces~

sftl'y to chanse the		needle plate .. To vary the w:idth·of seam within				these	very	fine limits:
~ l.opsen screw	'N'·of lower knife holder		(fig •. l3)
2 --Loosen screw	'F' (fig. 17).
3 - Push upper knife-bolder block 'A' (fig.			17) to right	or	left in order		to	obtain the
required width of seam.
4 4 Tighten screw	'F'	(fig.· 17)
5 -Turn handwheel clockwise. till knife-holder block 'A'				is	1n its	upper-most		position,
Loosen screw	'Nf (fig,.l3). . . .

Activate lower knife holder so that knife holder pressure~spring will apply.the· correct pressure to the cutting 'ed.ges of the trimner knives." A~ no time s·hould pressure

be applied agaiMt ·screw	'A' (fig. ·13) when setting the	triDIJ~er knives.
6 -·Retighten screw 'N.' _(fig.	13).	·

From the library of: Superior Sewing Machine & Supply LLC

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g)	I.rregularities due	to improper handling of the macb·in·e

No.	Irregitlarity				Probable cau~e

1	Irregular stitch		-	Tensions badly adjusted
			-Thread take-ups badly. adjusted
		-		Incorrect	~breading
		-		Yarns not	gauged

2	Feed and Fabric		-		Insufficient presserfoot pre.ssure
	slipping sideways		-		Insufficient presserfoot pre.ssure
	slipping sideways			·- Feed dogs badly adjusted in height and slant.
				·- Feed dogs badly adjusted in height and slant.
				-Knives need sharpening
				~fferential badly adjusted

3	Skip-stitching			-	Primary or Se.condary Looper badly adjusl:.ed in
				-	respect	to the needle,	consequently blunting the
					respect	to the needle,	consequently blunting the
					looper,
				-	Loopers	toc·far·apart	at crossing
				-	Loope·rs too near at crossing with co1;1sequent
					blUI:ttiilg
				-	Front needle guard too far from needle
				·- Needle. bad'ly posit~oned .

4	Threa? Q.reakage			-	Tensions	too taut
				-'- Yarn irregularly wound on reel
				-	.
				-


5	Needle break~ge			-	Needle bent
				-Needle badly mounted


6	Ptincturing of fabric			.:_	Blunt needle
				-	Needle gauge not suitable for plate
				-Needle with unsuitable·point
				-Needle with unsuitable·point

7	L6ss	of oil		-	SCrews joining base and pump not tightened.
					underneath
					underneath
				-	Pump plu~ not tighten~d underneath
				-Pump gas et badly-arranged

8	Lack	of l1;1brication		-Oil level too low
				- V-belt incorrectly mounted
				-	Upper tube clogged
				. -	Lubrication purrp filter clogged

From the library of: Superior Sewing Machine & Supply LLC

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