Union Special XF500 User Manual

SECOND

EDITION

CATALOG NO. 142M

STYLES

XF511B100MF XF511H112MG XF511E101MF XF511H115MF XF511E118MF XF512E100HB XF511E152MF XF512E100MP XF511H100MF XF513E100HJ XF511H100MG XF513E100HR XF511H100MAW XF513E101HR XF511H112MF XF513E112HR

Maximum performance XF500

Series flatbed machines

From the library of: Superior Sewing Machine & Supply LLC

FORWARD

This technical manual has been prepared to guide you in the maintenance of your new UNION SPECIAL MACHINE. Careful attention to the instructions for operating and adjusting these machines will enable you to maintain the superior performance and reliability designed and built into every UNION SPECIAL machine.

The Adjusting Instruction portion of this manual explains in detail the proper setting for each of the components related to forming the stitch and completing the functions of the machine. Figures are used to illustrate the adjustments using reference letters to point out specific items discussed.

Implementation of Preventive Maintenance Schedule can bring about significant improvements in operator productivity by avoiding costly equipment breakdowns. Whenever it becomes necessary to make repairs or replace parts on your machine, be sure to insist on genuine UNION SPECIAL Repair Parts. These parts are designed specifically for your machine and manufactured with utmost precision to assure long lasting service.

This Catalog has been made on the basis of available information. Changes in design and/ or improvements may incorporate a slight modification of configuration in illustrations or part numbers.

CATALOG NO. 142M

SECOND EDITION

PRINTED IN USA

DECEMBER, 1989

UNION SPECIAL CORPORATION

INFORMATION SUBJECT TO CHANGE WITHOUT NOTICE

From the library of: Superior Sewing Machine & Supply LLC

Each UNION SPECIAL machine is identified by a Style number. which on this machine

Class~ is stamped into the --style-plate			affixed to the right front of machine.
Serial number is stamped into bed casting at the right rear base of machine.
NOTE:	Instructions stating direction or		location, such as right, left, front, or
	rear of machine, are given relative			to the operator's position at the
	machine, unless otherwise	noted.	The	handwheel	rotates counterclockwise
	in operating direction, as	viewed	from	the right	end of the machine.

STYLES OF MACHINES

High speed, maximum performance, long arm flatbed, double locked stitch, plain feed machine. Totally enclosed feed and looper drive mechanism, fully automatic forced feed lubricating system with easily replaceable oil filter, independently driven rear needle guard, adjustable feed lift, quick adjustable looper avoid and built-in needle cooler.

XF511B100MF Single			needle, MEDIUM capacity, wrench adjustable stitch change,
	thumbscrew adjustable needle frame eyelet, low inertia presser									foot,
	permitting light presser foot pressure			for		positive		feeding		and
	chaining at high speeds; for long seams			on light to medium weight
	fabrics such as trousers, skirts, coats, jackets, etc.								Standard
	recommended needle Type 128 GBS, Size			90/036.			Stitch		range	7-10
	S.P.I. Maximum recommended speed 8000 R.P.M., depending on operation.
XF511E101MF Single			needle, MEDIUM capacity, quick	stitch			change		mechanism,
	thumbscrew adj us tab1e needle frame eye 1et,				1ow inertia			presser		foot
	permitting light presser foot pressure			for		positive		feeding		and
	chaining at high speeds. Equipped with a Close-Coupled Roller Puller,
	for long flat seams on medium weight fabrics				such		as trousers, coats,
	and perma-press materials. Standard recommended needle Type 128 GBS,
	Size 90/036. Stitch range 7-10 S.P.I. Maximum recommended speed 7500
	R.P.M.,		depending on operation.
XF511EI18MF	Same	as	Style XF511EIOIMF except-equipped	with		Belt	Puller,
XF511EI52MF	Same	as	Style XF511EI18MF except-equipped	with		Power "AIR-KLIPP"®Chain

Cutter.

XF51IHIOOMF Same as Style XF5118100MF except-equipped with built-in oil cooler and quick stitch change mechanism. Maximum recommended speed 9000 R.P.M., depending on operation. Stitch range 7-10 S.P.I.

XF511H100MG Same	as	Style	XF511HIOOMF	except used for side and inseaming on	men's
work	and	dress	pants made	from medium weight material. Stitch	range
10-14	S.P. I.

XF511HIOOMAW Same as Style XF511H100MF except-equipped with narrow feeding presser foot parts for a 3/16 inch (4.8mm) margin. Stitch range 7-10 S.P.I.

Maximum recommended speed 8000 R.P.M., depending on operation.

XF511HI12MF	Same	as	Style XF511H!OOMF except-equipped with Power "AIR-KLIPP"
	Chain	Cutter.
XF511HI12MG	Same	as	Style XF5JJH!OOMG except-equipped with Power "AIR-KLIPP"
	Chain	Cutter.
			3

From the library of: Superior Sewing Machine & Supply LLC

STYLES OF MACHINES (Continued)

XF511Hl5!MF Same as Style XF511HIOOMF except-equipped with Power "AIR-KLIPP"

Chain Cutter and pneumatic stitch shortening device.

XF512ElOOHB

Two needle~

HIGH

capacity,

for

seaming

trousers

and

similar

garments

made

medium heavy to heavy weight

material.

Right

needle in

front.

Standard

recommended

needle

Type

128

GBS,

Size

100/040.

Available in 7 S.P.!. ONLY.

Standard

gauge No.

ONLY.

The

seam

produced has two rows of stitching with

the strength of 14 S.P.I., yet

the fabric is moved forward at a rate of 7 S.P.I. Maximum recommended

speed 6500 R.P.M., depending on operation.

XF512ElOOMP Two

needle, MEDIUM capacity, quick

stitch

change

mechanism,

for

piecing sleeves, joining shoulders and setting sleeves on ordinary

quality shirts made with light to medium weight materials. Includes

double lap seam folder l/16 inch

(1.6mm)

capacity.

Standard

recommended

needle

Type

108

GHS,

Size

70/027.

Stitch

range

9-14

S.P.I.

Standard

gauge Nos.

and 16.

Maximum

recommended

speed

6500

R.P.M.,

depending

on operation.

XF513E100HJ Three

needle, HIGH capacity, quick

stitch

change

mechanism,

for

seaming wind breakers, mackinaws, lumber jacks and for

similar

operations on medium heavy to heavy weight material. Equipped with

tractor

type presser foot,

Includes

double

lap

seam

folder 3/32

inch

(2.4mm)

capacity.

Standard

recommended

needle

Type

128

GAS,

Size

125/049.

Stitch range 7-10 S.P.!.

Standard gauge Nos. 8 and 9.

Maximum recommended speed 6500 R.P.M., depending on operation.

XF513ElOOHR Three needle, HIGH capacity, quick

stitch

change

mechanism,

for

seaming sanforized denim and similar

operations on medium to heavy

weight materials.

Includes

double

lap

seam folder 1(8 inch (3.2mm)

capacity.

Standard recommended needle

Type

128

GAS,

125/049.

Stitch

range 7-10 S.P.I.

Standard

gauge

No.

ONLY.

Maximum

recommended

speed 6500 R.P.M., depending on operation.

XF513EIO!HR

Same

Style XF513EIOOHR

except-equipped

with

Close-Coupled Roller

Puller.

XF513Ell2HR

Same

Style XF513EIOOHR except-equipped

with

Power "AIR-KLIPP"

Chain

Cutter.

® 11 AIR-KLIPP 11 is

registered

trademark

Union

Special

Corporation.

From the library of: Superior Sewing4 Machine & Supply LLC

SAFETY RULES

CAUTION!

THIS SAFETY SYMBOL INDICATES YOUR PERSONAL SAFETY IS INVOLVED TO PREVENT PERSONAL INJURY:

All power sources to the machine MUST be TURNED OFF before threading, oiling,

adjusting or		replacing	parts.
Wear	safety	glasses.
All	shields	and guards	MUST be in position before operating machine.

DO NOT tamper with safety shields, guards, etc., while machine is in operation.

LUBRICATION

IMPORTANT: Machine must be in a leveled position.


Oil	has been drained from main reservoir before	shipment.			Use	a	straight	mineral
oil	with a Saybolt viscosity of 90 to 125 seconds	at	100	degrees Fahrenheit.					This
is equivalent to UNION SPECIAL Specification No.		175.		Remove		oil	filler	cap	(A,
Fig.	I) and fill to TOP line of oil level gauge (B).		Replace		oil	filler cap.

CAUTION! On new machines, machines that have been out of service for an extended

period of time OR machines that have been drained of oil and refilled ...

run machine slowly at 300

R.P.M.

for

approximately five

minutes

while

paying strict

attention to

the

oil

flow indicator

which

should

rise

the oil filler cap (A) and remain steady while

machine

running.

This

must be noted to ensure that

oil

flow

indicator

is functioning and oil is

circulating.

Run

machine

and

recheck

oil

level

which

MUST

maintained

between the red lines of oil

gauge.

To maintain maximum

recommended

speed

and

serviceability

these

machines~

refer

to General Preventive Maintenance Schedule.

Under

circumstances,

should

oil

remain in the machine for more than one year.

Two

oil drain

plugs

are

located

bottom

of oil

pan.

ALWAYS

replace

oil

filter

when oil

changed.

replace

filter

remove

four

screws

(C,

Fig.

1),

cover

(D)

and

lift

out

filter,

REMOVE

(brass) BY-PASS VALVE FROM TOP OF OLD FILTER AND INSTALL IN NEW FILTER. Reassemble in reverse manner.

From the library of: Superior Sewing Machine & Supply LLC

•

GEl

PRESSURE OIL	SIPHON RETURN
RETURN OIL	PRIORITY VALVE PRESSURE
INLET	FILTER BY-PASS

Fig. I

From the library of: Superior Sewing Machine & Supply LLC

PIVOT GUARD

TO LEFT FOR

THREADING

THREADING DIAGRAM

From the library of: Superior Sewing Machine & Supply LLC

--------------------- -

r~~~

'	'
''

PIVOT GUARD

TO LEFT FOR

-------

o~ase of thread1ng, pull le~erdow~nd pu--;,-h-1
r	looper holder to the r1ght.
	looper holder to the r1ght.
AUTION! Looper holder MUST be returnad to			~·
	extreme left and	LOCKED by pull1ng	~·
	release lever up	before sewmg.

----------

THREADING DIAGRAM

From the library of: Superior Sewing8 Machine & Supply LLC

NEEDLES

Each

needle

has

both a

type and size number.

Type

number denotes

the

kind

shank, point, length, groove, finish,

and

other

details. Size

number,

stamped

the

needle

shank

in metric, denotes largest diameter

blade,

measured

midway

between

shank

and

eye.

Co11 ecti ve ly,

type and

size number

represent

the

camp1ete

symbol,

which

given

the

label

all

needles

packaged

and

sold

UNION

SPECIAL CORPORATION.

The

type

numbers

of the

needles

recommended for

each

Style

machine

covered

this

catalog

are

given

the

machine

style

description.

Other

needles

are

available, but the ones indicated are those recommended to produce the most

satisfactory results.	The	type numbers of the recommended	needles together with
their descriptions, and	the	sizes available are listed below:

NEEDLE		TYPE	DESCRIPTION			SIZES AVAILABLE
108	GHS	Round	shank,	ball	point, double	70/027,	75/029,
		groove, struck groove, ball eye,				80/032,	90/036,
		spotted, chromium			plated.	125/049.
128	GAS	Round	shank,	round	point, short,	80/032,	90/036,
		double groove, struck groove, ball				I00/040,	110/044,
		eye,	spotted,	chromium plated.		125/049,	140/054,
						150/060,	170/067.
128	GBS	Round	shank,	round	point, short,	80/032,	90/D36,
		double groove, struck groove,				I00/040,	110/044,
		ball eye, spotted, ball point,				I25/049,	140/054,
		chromium plated.				I50/060.

To have needle orders promptly and accurately filled, an empty package, a sample

needle,	or the type and size	number should be	forwarded.	Use	description on
label.	A complete order would	read "1000 needles,	Type 128 GBS,	Size	90/036".

The following instructions explain in detail the proper setting for each of the components related to forming the stitch and completing the functions of the machine.

Adjustments	are	presented in	sequence so that a logical progression is
accomplished.	Some adjustments		performed out of sequence may have adverse effect
on the function of		other related	parts.

NOTE: On earlier styles, machines equipped with a DURACOAT ALUMINUM needle bar;

TORQUE needle bar connection screw, 10 to 12 in-lbs. (11.5 to 13.8 em/kg).

On later styles, machines equipped bar; TORQUE needle bar connection

with a DURACOAT MASKED ALUMINUM needle screw, 16 to 18 in-lbs. (18.4 to 20.7

em/kg).

THREAD MACHINE AS ILLUSTRATED.

From the library of: Superior Sewing Machine & Supply LLC

Fig. 2

Fig. 3

Fig. 4

		TIMING	FEED	TO	NEEDLE
Adjustment		waul d	be required if machine is
feeding while the			needle		or	needles are	in
the	work.
To	adjust;	remove	top	cover~		head cover	and

all other plates~ supports and covers as required to provide accessibility to the feed mechanism chamber. Turn handwhee 1 in

operating direction to position needle bar connection (A, Fig. 2) at TOP of stroke.

Loosen four screws (A, Fig. 3) in upper mainshaft sprocket (B) and hold handwheel so upper mainshaft and needle bar cannot move.

While holding handwheel firmly, turn				lower
mainshaft	to	position	feed	crank
counterweight	(A,	Fig. 4)	with its	FLATS

perpendicular to the bottom of machine and facing away from the operator, as viewed in


Figure	4. TORQUE			screws (A,		Fig.	3)	to	36
in-lbs (41 em/kg).
NOTE:	Whenever	"TIMING			FEED	TO	NEEDLE"		is
	corrected,		always		check	11 SYNCHRONIZING
	LOOPER AND		NEEDLE		MOTIONS."
SYNCHRONIZING LOOPER AND NEEDLE MOTIONS
Looper drive belt (A, Fig.						5)	has	proper
tension	if,	when		turning		handwheel			in

operating direction to position looper in the center of its (right to left) travel ... there is no noticeable (right to left) play in the looper mechanism.

There should be approximately 1/8 inch (3.2mm) deflection in looper drive belt when pressing firmly with thumb, midway between sprockets (B and C). Adjustment can be made by loosening two screws (D) and turn looper module (E) clockwise (as viewed from handwheel end of machine) to tighten belt tension or counterclockwise to loosen belt tension.

It	is	easier	to rotate looper			module by
turning		cast-off plate mounting bracket (F).
At	this	time,	notch (G)	on	end of		looper
module		should	be facing in the upward
position		(between 9 and 3 o'clock).					Loosen
binder		screw	(H) and reposition cast-off
plate mounting			bracket	(F)	so	its	leading

edge {J) is vertical to and parallel with bed

casting.		Retighten	screw	(H) assuring that
the	right	side of mounting bracket is flush
with	right	side of	looper	module. Retighten

screws (D).

From the library of: Superior Sewing Machine & Supply LLC

SYNCHRONIZING LOOPER AND NEEDLE MOTIONS (Continued)

To synchronize machine, remove needle bar eyelet guard, needle thread take-up cam wire,

needle/s,	presser	foot,	throat	plate,
looper/s,	and feed	dog.	Turn handwheel to

position needle bar at BOTTOM of stroke and

looper holder at EXTREME right end of travel.

Using gauge No. 21227 R, mount gauge plate with throat plate attaching screws. Insert

pin	(included		with gauge}		into	looper
holder.		Mount	indicator	block	to	machine
head with one of the screws					removed		from
needle		bar eyelet guard.		Insert		shank	of

indicator gauge into indicator block tighten screw against shank, {See Sketch A for reference).

NOTE:	For Style	XF512's and XF513's use
21227	AD mounting	plate.

Rotate handwheel in OPERATING direction until

the	pin	in looper holder contacts gauge
plate.		loosen screw (A, Fig. 6)			in needle
bar	connection (B)		and	position	needle	bar
(C)	as	required	to	set the	pointer	of

indicator gauge at non and tighten screw (A)

VERY LIGHTLY.

IMPORTANT: Refer to NOTE, page 9 for proper TORQUE of screw.

Rotate handwheel in REVERSE direction until pin in looper holder again makes contact with gauge plate and note the reading on the gauge. A variation of ( 1) graduation on the

scale	is	permissable.		If	the reading is
above	non,	loosen	screws	(K.	Fig.	5) while
holding		sprocket	(B),	turn		handwheel

clockwise. If the reading is below 11 011 , hold sprocket, turn handwhee l counterclockwise. Temporarily snug screws.

Rotate handwheel in OPERATING direction until pin in looper holder contacts gauge plate and note the reading on scale. If the reading is above non, loosen screws (K) while holding sprocket (B), turn handwheel counterclockwise. If the reading is below non, hold sprocket and turn handwheel clockwise. Temporarily snug screws.

Fig. 5

J~-·

SKETCH A

Fig. 6

From the library of: Superior Sewing Machine & Supply LLC

LOOPER IN

FRONT OF

NEEDLE

OPERATING

DIRECTION

A 'o 7

SKETCH B

1-	-- · ---
	LOOPER	LOOPER IN
	BEHIND	FRONT OF
	NI::EDl E	NE:EDLE

REVERSE

DIRECTION

--- ---

SKETCH C

For Proper SYNCHRONIZATION of

Looper & Needle

Dimensions will be the same


Looper
Looper		Looper in
BEHIND		FRONT of
Needle		Needle
	in	io
		REVERSE
		Dirroction

SKETCH D

SYNCHRONIZING LOOPER AND NEEDLE MOTIONS (Continued)

Continue	to	check and	adjust in	both
OPERATING	and	REVERSE	directions	until

pointer of indicator gauge comes within (1) graduation on the scale when turning the

handwheel	in either direction and tighten
screws -(K)	securely, assuring that drive belt
is centered	on sprockets.

If a synchronizing gauge is not available ...

turn the

handwheel in operating

direction

position looper point even with

the

left

side

RIGHT

needle

and

check the

distance

from

the eye of needle to the bottom

looper

blade.

Turn

handwheel

reverse

direction

position

looper

even

with

the

left side

RIGHT needle and check the distance from

the

eye

needle

the

bottom of

looper

blade.

the

distance

was

greater when

handwheel

was

turned in

operating direction,

viewed

Sketch

loosen

screws (K, Fig. 5) while

holding

sprocket

(B),

turn

handwheel

counterclockwise.

the

distance

was

greater when handwheel was turned in reverse

direction, as viewed in Sketch C,	hold
sprocket and turn handwheel clockwise.
Temporarily snug screws. Continue to	check

and adjust in both OPERATING and REVERSE directions until the distance from the eye of

the	RIGHT	needle	to	the bottom of looper
blade	is	the same	in	either direction, as

viewed in Sketch D. Before tightening screws

(K, Fig.	5) securely,	be sure to have the
drive belt	centered on	sprockets.

NEEDLE BAR ALIGNMENT

(For Two and Three Needle Styles)

Insert a new set of needles. As a temporary setting, the TOP of needle bar (A, Fig. 7) should be approximately 1 7/8 inches (47.6mm) from the TOP of upper needle bar bushing when needle bar connection (B) is positioned at TOP of STROKE as shown in Figure 7.

From the library of: Superior Sewing Machine & Supply LLC

NEEDLE BAR ALIGNMENT (Continued)

(For Two and Three Needle Styles)

Adjustment can be made by loosening screw (C)~ reposition needle bar up or down as required and tighten screw (C) VERY LIGHTLY.

IMPORTANT: Refer	to NOTE, page		9 for	proper
TORQUE	of	screw.
Rotate handwheel	to	ensure	that	needles

center in the needle holes of throat plate as

shown in Figure 8. Adjustment can be made by

loosening	screw	(C,	Fig.	7)	slightly,
allowing	needle	bar	to	be	rotated as

requireds while being careful to maintain the temporary height setting and tighten screw

(C)AS SPECIFIED. An additional 4-way

directional	adjustment	of	the throat	plate
can be accomplished as follows:
IMPORTANT:	Adjustment	of	throat plate	must

be coordinated between needles and feed dog;

refer	to	11 FEED	DOG	SETTINGS 11 •		Loosen	three
screws	(A, Fig. 8)			in throat		plate support
(B).	loosen		two	screws	(C)	which	secure
locating		ferrules,		allowing	the	throat	plate

support to be repositioned slightly. Tighten screws (C) first, then screws {A).


CAUTION!		Needle		bar	has	a special		coating.
		DO	NOT wedge or pry with any						type
		of	tool, as damage to needle						bar
		may	result.			Should	needle		head
		require assembling to needle bar,
		TORQUE		14-16 in-lbs (16-18				em/kg).
			LOOPER SETTING
	(For		Single		Needle Styles)
Insert	a	new		needle,		type	and		size

specified. With looper positioned at EXTREME


right	end	of	travel,		distance		from		centerline
of needle		to	point		of looper should be 5/32
inch	(4.0mrn).			Adjustment		can		be	made by
loosening		screw		(A,	Fig.	9)	and	turn screw

(B) clockwise to increase looper gauge or counterclockwise to decrease. Apply pressure to the upper portion of looper holder (C) to the left while making this adjustment and locking with screw (A).

Looper gauge No. 21225-5/32 can be used advantageously while making this adjustment.

---- -,

l''18 (4 7 6mm)l

-C

Fig. 7

Fig. 8

Fig. 9

From the library of: Superior Sewing Machine & Supply LLC

Fig. 10

Fig. 11

LOOPER SETTING (Continued)

(For Single Needle Styles)

looper must also be set so, as it travels to the left behind the needle, NOT to touch, but


with	a	MAXIMUM	clearance		of .002		inch
(.051mm).		Adjustment		can	be	made	by
loosening		screw {A) and		moving looper holder
(C) forward or rearward on					its	shaft	to
obtain	specified		conditions;		apply	pressure

to the upper portion of looper holder				to	the
left while tightening		screw	(A).
	LOOPER	SETTING
(For Two and Three Needle Styles)
If not	previously done, insert a new			set	of
needles;	type and	size	specified.	With

looper holder at EXTREME right end of travel, distance from centerline of RIGHT needle to point of RIGHT looper should be dimension (A,


Fig. 10);		see chart.		Adjustment		can	be	made
by pulling release lever (B) down								and
loosening		screw (A,		Fig.	11) in	stop	collar
(B).	Apply		pressure		against	the		upper
portion	of		looper	holder (C)		to the		LEFT

while turning screw (D) in looper holder clockwise to increase looper gauge or counterclockwise to decrease. Applicable looper gauge can be used advantageously in

making this		adjustment.
Continue	to apply		pressure	against	upper
portion	of	looper to	the LEFT	while	turning

stop collar (B) to its EXTREME CLOCKWISE

position	and tighten	screw	(A)	securely.
Push up release lever (E)			to lock		looper
holder in	position.	Adjust	screw	(C,	Fig.
10) which	incorporates a		spring	plunger,

against the recess in cam of stop collar as required to attain the following conditions:

Pull release lever down and be able to push looper holder to the right, with a snapping motion (making loopers easily accessible for threading). Push looper holder to the left, with a snapping motion. Apply pressure against upper portion of looper holder to the LEFT and push release lever up to lock looper

holder in		operating position.
In	locked	position,		the release	lever	should
be	approximately		in	line with	middle	looper
as	viewed	from	the	right side of		looper

holder. Adjustment can be made by loosening

screw (D~ Fig.	10), reposition release lever
as required and	retighten screw.

From the library of: Superior Sewing Machine & Supply LLC

LOOPER SETTING (Continued)

(For Two and Three Needle Styles)

Loopers must also be set so, as they travel to the left behind the needles~ NOT to touch,

but with a MAXIMUM c1ea ranee of . 002 inch

(.051mm). Adjustment can be made by pulling release lever down, loosening screw {A, Fig.

11) in stop collar (B) allowing looper holder to be moved forward or rearward on its shaft, as required. Apply pressure against upper portion of looper holder to the LEFT while

turning	stop	collar (B)	to its	EXTREME
CLOCKWISE position and tighten screw (A)
securely and push release lever up in locking
position.	RECHECK looper gauge.
MACHINE		STYLE	DIMENSION A FIG. 10
XF512EJOOHB-1			5/32	inch	(4.0mm)
XF512E100MP-12			1/8	inch	(3.2mm)
XF512EJOOMP-16			1/8	inch	(3.2mm)
XF513EJOOHJ-8			5/32	inch	(4.0mm)
XF513E100HJ-9			5/32	inch	(4.0mm)
XF513E100HR-9			5/32	inch	(4.0mm)
XF513E101HR-9			5/32	inch	(4.0mm)
XF513Ell2HR-9			5/32	inch	(4.0mm)

NEEDLE BAR HEIGHT

Turn handwhee 1 in operating direction unt i1

POINT of looper (A, Fig. 12) is even with the LEFT side of needle (B). TOP of needle eye should be 1/64 inch (.4mm) below the under surface of looper blade, as shown in Figure

12. Adjustment can be made by loosening screw (C) and move needle bar (D) up or down as required.

IMPORTANT: Refer to NOTE, page 9 for proper TORQUE of screw.

NOTE: Needle bar has special coating. DO

NOT wedge with any type of tool, as damage to needle bar may result.

IMPORTANT! Care must be taken not to disturb

ALIGNMENT of needle bar while making this adjustment.

LOOPER AVOID

Machine is equipped with a quick adjustable looper avoid mechanism to accommodate extreme

differences		in needle		sizes.	As	the	looper
tra ve 1s	from	1eft	to	right	with	the	needle
bar descending.			the	needle	point/s		should
contact	ONLY	the	lower	THIRD	of	the	back of
							15

Fig. 12

LOOPER GAUGE NO.

21225-5/32

21225-1/8

21225-5/32

Fig. 13

From the library of: Superior Sewing Machine & Supply LLC

Fig. 14

Fig. 15

Fig. 16

LOOPER AVOID (Continued)

looper blade/s. Adjustment can be made by loosening two screws (A, Fig. 13) and turn eccentric stud (B) towards the plus side

(counterclockwise) for MORE looper avoid or towards the minus side {clockwise) for LESS.

When properly set, tighten screws (A).

NOTE: Whenever looper avoid is changed,

ALWAYS recheck "LOOPER SETTINGS".

REAR NEEDLE GUARD

At extreme forward end of travel, rear needle guard (A, Fig. 14) must be set horizontally not to contact needle/s (B) with a maximum clearance of .002 inch (.051mm).

Guard should be set as low as possible, yet have its vertical face approach approximately

3/64 inch (1.2mm) of needle point until point

of looper		(C)	moving	to	the left, is		even
with	the	right	side	of	needle.	Adjustment
can	be	made	by	loosening		screw	(D),

reposition needle guard as required and

retighten	screw.		If additional front to rear
adjustment		is	required to maintain	needle
!1uard in	a	horizontal position, loosen		screw

{E) in pivot link which allows needle guard


shaft	to	be rotated.			Be sure		to	take	up
thrust	by	exerting		pressure		against		needle
guard	ho1der to the 1eft and					pi vat		1ink.	to
the right, while tightening screw (E).
NOTE:	Change in stitch 1ength WILL								NOT
	require		change		in	needle		guard
	setting,		but	a	change	of	needle size
	may.

	FEED DOG SETTINGS
Feed	dog should be centered in throat	plate
with	equal clearance on both sides and	ends.

At highest point of travel, feed dog teeth should extend the depth of a tooth or approximately 3/64 inch (1.2mm) above throat plate. MINOR (right to left) adjustments can be made by loosening three screws (A, Fig.

15) in throat plate support (B). Loosen two screws (C) which secure two locating ferrules

used	to	align	throat	plate	support.
Reposition		slightly	as required		considering

both needle hole slot/s and feed dog slots. Tighten screws (C) first, then screws {A).

From the library of: Superior Sewing Machine & Supply LLC

FEED DOG SETTINGS (Continued)

Front to rear adjustments can be made by loosening two screws {A, Fig. 16), reposition feed dog holder (B) as required. Press down on front of feed dog (C) while tightening

screws (A). Feed dog can be leveled or tilted by removing throat plate, loosen two screws (A, Fig. 16) and screw (A, Fig. 17) so feed dog (B) can be raised enough to 1oosen locking screw (C).

Turn feed tilting cam (A, Fig. 18) as

required to level feed dog as it comes out of

throat plate. Retighten screw (C, Fig. 17) and screws (A, Fig. 16) while pressing down on front end of feed dog. Adjust feed dog height supporting screw· (B, Fig. 18) to

support feed dog after specified feed	dog
height has been determined by checking	with
feed dog and throat plate in place.	When

adjustments are completed, tighten screw (A,

Fig. 17) while pressing down in front of feed


dog.	More	or less		FEED	LIFT can be		acquired
by loosening screw (A, Fig. 19)						and	turning
adjusting dial (B) towards the						operator to
increase		feed	lift.		Turning	away		from
operator		decreases.		Retighten		screw		(A).
Turn	handwheel		in	operating		direction		to

ensure that feed dog does not strike throat

plate or	looper/s, throughout its path of
travel.
	CHANGING STITCH LENGTH
(All	Styles except XF511B100MF)

Stitch length can be changed by pressing down and turning stitch length regulating knob (A,

Fig.	20)	clockwise		to	shorten		or
counterc 1ockwi se to			1engthen		the	stitch.
Recheck front to rear clearances in						throat
plate as described under "FEED					DOG SETTINGS 11
whenever stitch length is changed.						Bottom
limit	stop (B)	should	be	set by	screw	(C)	to

prevent regulating knob (A) from accidently being turned beyond the desired maximum stitch length.

CHANGING STITCH LENGTH

(For Style XF511B100MF)

Stitch	length		can	be	changed by		loosening
screw	{A,	Fig.		21)	which	is	accessible
through	a	slot	in	the	right	cloth	plate (1/8

inch A11 en wrench required). When moved towards. the rear lengthens the stitch; moving

Fig. 17

Fig. 18

Fig. 19

From the library of: Superior Sewing Machine & Supply LLC

CHANGING STITCH LENGTH (Continued)

(For Style XF511B100MF)

towards the front acts the reverse.

Recheck

front

rear

clearances

throat

plate as described

under 11 FEED

DOG

SETTINGS 11

whenever

stitch

length

changed.

Tighten

screw

(A)

securely.

LOW INERTIA

PRESSER

FOOT

(For Styles XF51IB100MF, XF511E101MF, 118MF,

152MF,

XF511H100MF,

100MG,

112MF,

112MG and

151MF)

With needle bar at bottom of stroke

and

presser foot resting on throat plate, there

should be 1/32 inch ( .8mm)

clearance

between

top

screw

and top of slot in

presser

foot

as viewed in Figure 22. There should be 1/16

inch

(1.6mm)

clearance

between bottom

slot

in lifter lever link (A)

and

bottom

presser

bar guide

(B)

when

foot

1ifter

1ever

released.

adjustment

required,

loosen nut (C) and turn screw (D) down

approximately 1/8 inch (3.2mm) below bottom

surface of presser bar guide (B).

Back

off

presser spring regulating screw and loosen

screws (E) in presser bar guide (B) so that

Fig.

presser

foot

rests

squarely

throat

plate

and screw (D) is touching the

bottom

presser

bar

guide

plate,

then

retighten

screws

(E).

Turn presser spring regulating screw a11

the

way

down.

then

back

off

screw

(D)

counterclockwise

obtain

the

l/32

inch

( .8mm)

dimension

presser

foot;

lock

nut

(C). Loosen screw (F) in lifter arm (G) and

rotate arm slightly as required to obtain the

1/16 inch (1.6mm) dimension between

link

(A)

and

guide

(B);

retighten

screw

(F)

ensuring

-.--;

no left

to right

shake in

lifter

arm

(G).

FEEDING

PRESSER

FOOT

(For Style

XF511H100MAW)

With

presser

foot resting on throat plate,

Fig.

the

distance

from

top

spring

(A,

Fig.

23)

top

yoke (B) should be 5/8

inch

presser

foot

(15.9mm) and the line stamped across

the

bottom

should line up with centerline

needle.

the

presser

foot

is raised, its bottom should move VERY

SLIGHTLY

towards

the rear ...

1/64

inch

(.4mm)

maximum.

adjustment is

required, proceed

follows:

From the library of: Superior Sewing Machine & Supply LLC

FEEDING PRESSER FOOT (Continued)

(For Style XF511HIOOMAW)

Remove

presser

spring

regulating

screw,

presser

bar

spring

guide

and

presser

bar

spring.

Loosen

nut

(C,

Fig.

22)

and

turn

screw (D) down approximately 1/8 inch (3.2mm)

below

bottom

surface

presser

bar

guide

(B).

Loosen

screws

(E)

presser

bar

guide

(B).

Adjust

spring

regulator

nut

(C,

Fig.

23) as required, so its 1ower surface

5/8

inch

(15,gmm)

from top of yoke

(B)

viewed

in Figure 23. With presser foot resting on

throat

plate

and

feed

dog

down

below

throat

plate, press down on spring regulator nut (C)

1116"

1.6mm)

until the marks in presser foot bottom align

with

centerline

needl,e

and

pas iti oned

keep

needle

cente·r

of needle s1at.

Tighten screws (E, Fig. 22) securing

presser

bar guide to presser bar, ensuring stop

screw

(D) in presser bar guide

resting

bottom

of presser bar guide plate.

Replace presser bar spring, spring guide and

spring

regulating

screw.

Turn

regulating

screw down until the top

its

threaded

portion is level with head casting. Rotate

handwheel to position feed below throat plate

with presser foot resting on throat plate.

Depress presser foot lifter lever to see if

presser

foot

bottom

moves

SLIGHTLY

towards

the rear before presser foot begins to lift.

Adjustment can be made by

turning

stop

screw

(D,

Fig.

23)

clockwise

shorten

counterc 1ockwi se

1engthen the

distance

travel.

Loosen screw (F, Fig. 22) in lifter arm (G) and rotate arm slightly as required to obtain

Fig. 22

Fig. 23

1/16 inch		(1.6mm) clearance between link (A)
and	guide	(B); retighten screw	(F)	ensuring
no	left to	right shake in lifter	arm	(G).

Presser foot, at back of needle slot should cover most of throat plate land when resting directly on throat plate.

When presser foot bottom is raised by material	and the feeding foot spring bottoms,
rear of needle slot should clear the needle.	Main presser bar should not begin to

lift before the spring of feeding foot bottoms.

Purpose		of the feeding presser foot	is	to make top	and	bottom	plies	of material
feed	the	same amount without pulling	on	the bottom	ply.	Final	adjustment		may be
required		to match plies; turning nut	(C, Fig. 23) to increase				pressure on		spring
(A)	wi 11	tend to feed the bottom p1y more. . • decreasing pressure					wi 11	tend	to feed
the	top	ply more.

From the library of: Superior Sewing Machine & Supply LLC

Fig. 24

Fig. 25

PRESSER BAR AND PRESSER FOOT

(For Styles XF512E100HB, MP,

XF513E100HJ, 100HR, 101HR and 112HR)

With needle	bar at bottom of stroke and
presser foot	resting squarely on throat

plates there should be a minimum clearance of

1/64	inch	(.4mm) between the bottom of screw
(A,	Fig.	24) and bottom of slot in presser

bar guide plate (B). At this time, there should be at LEAST 1/32 inch (.Bmm) clearance

between bottom			of	presser bar guide					and	top
of lower presser bar bushing.
There should also be 1/16 inch									(1.6mm)
clearance between bottom of slot in									lifter
lever	link	(C)	and bottom			of		presser		bar
guide	(D)	when		foot	lifter			lever		is
released.		If adjustment			is	requireds			proceed
as follows:
Back	off	presser		bar	spring		regulator			to

release tension on spring. Loosen two screws

(E) in presser bar guide (D). Loosen nut (F) and turn screw (A) down against guide plate

(B) to obtain at least 5/64 inch (2.0mm) clearance between bottom of presser bar guide

(D) and guide plate (B). Align presser foot with needles and press down FIRMLY while tightening two screws (E) in presser bar guide (D).

NOTE: This setting was necessary to prevent damage to the scraper edge of presser bar bushing. should presser foot be removed from machine.

Turn presser bar spring regulator down. Back off screw (A) to obtain the 1/64 inch (.4mm)

dimension between			bottom of		screw		and		bottom
of slot in presser bar guide plate								{B).		lock
nut (F).
Loosen screw (G) in lifter arm (H)							and		rotate
arm slightly as required to					obtain			the		1/16
inch (1.6mm) dimension between link (C)										and
guide	{D),	retighten		screw	(G)	ensuring no
left to right shake in lifter arm (H).
Adjust presser bar spring regulator so										it
exerts	only	enough pressure			on	presser				foot
to feed the work uniformly.							Turning			it
clockwise		increases			the			pressure,
counterclockwise			acts	the reverse.

From the library of: Superior Sewing Machine & Supply LLC

THREAD TENSION RELEASE

Needle thread tension assembly (A, Fig. 25) is set correctly when the tension discs

{B) begin to release thread as the presser foot					is raised to within 1/8 inch
(3.2mm)	from	the	end	of its travel and completely	released when presser foot has
reached	its	highest		position. Adjustment can
be made by loosening screw (C) and lower the
tension	assembly		(A)	to advance the release

action or raise tension assembly to retard the release action. Hold tension assembly in desired position while retightening screw (C).

Loosen	lock nut (A,	Fig. 26) and adjust screw
(B) in presser foot lifter lever, allowing
presser foot to be raised to its highest
position without		interfering with needle
head.	Lock nut (A)	securely.

LOOPER

THREAD

TAKE-UP AND

CAST-OFF

PLATE

Fig.

Looper thread take-up (A, Fig. 27) should be

centered,

left

right,

cast-off

plate

(B).

the needle bar is descending, the

take-up

should be in position to cast-off

looper thread just as the

tip of

needle

even with the bottom of

1caper.

Adjustment

can

made by loosening two screws in

take-up

{through access hole in cast-off

plate), reposition take-up as required and

retighten screws. Set adjustable eyelets (C)

l/2 inch (12.7mm) below centerline of their

mounting

screws.

If cast-off wire is rubbing take-up, loosen

screw (D), center the wire (E) and retighten

screw.

retaining

finger

rubbing

take-up,

loosen screw (F), center the

finger

(G)

and

retighten

screw.

retaining

finger

angle,

loosen

screw

(HL

turn

Fig.

retaining finger support (J) slightly as

required

and

retighten

screw.

Height

cast-off

plate is set correctly when the lowest point of take-up cam is even with

the

top

surface of cast-off plate.

Adjustment can be made by turning handwheel

operating direction to locate the

lowest point of the take-up cam," loosen screw

(K)

and raise or 1ower cast-off p1ate

to correct height;

then tighten screw

( K)

securely.

From the library of: Superior Sewing Machine & Supply LLC

THREAD CONTROL SETTINGS

(For Styles XF511BIOOMF, XF511EIOIMF, 118MF, 152MF, XF511HIOOMF, MG, MAW, 112MF, 112MG and 151MF)

Needle bar eyelet (A, Fig. 28) and needle thread cam (B) should	be	set	in
conjunction with each other so needle thread just contacts needle thread	cam	(B)	at
TOP and BOTTOM of stroke.

Adjustments can be made by bringing needle bar up. loosen screw (C) slightly, reposition eyelet (A) up or down as required. TORQUE screw (C) to 10 in-lbs. (11.5

em/kg).	Needle thread	cam	can be	adjusted forward or rearward as	required by
loosening	needle thread	cam	mounting	screw (D) and retighten screw.	Loosen screw

(A, Fig. 29) and position strike-off wire (B) 1/2 inch (0.5mm) from top surface of top cover to underside of strike-off wire. With needle bar at BOTTOM of stroke and

Thread Contra1 Assembly adjustab1e eye1et (C) set at "T 11 • App1y necessary tension to both needle and looper,thread and start to sew. Looper thread tension should be

light.	Adjust needle thread tension	to	pull up	smallest needle loop as required"
At this point a tight stitch will		be	achieved.	Without changing	needle thread
tension move Thread Control Assembly		adjustable eyelet to 11 L". This			will produce a
loose	seam with longer needle loops.

NOTE: Adjustment of strike-off wire can be raised to accormnodate thick dense material.

THREAD

CONTROL

SETTINGS

(For

Styles XF512EIOOHB,

MP, XF513EIOOHJ

HR,

IOIHR

and

112HR)

Needle bar eyelet (A, Fig. 30) should be set

with

its

eyelets

1/16

inch

(1.6mm)

below

strike-off (B) on needle

thread take-up cam

wire

(C)

shown

Figure

30,

with

needle

bar at BOTTOM of stroke.

Adjustments

can

made

bringing

needle

bar up, loosen screw (D)

slightly,

bring

needle

bar

down

BOTTOM

stroke,

reposition

eyelet

(A)

required

and

bring

Fig. 28

needle

bar

up.

TORQUE

screw

(D)

in-lbs. (11.5 em/kg).

Needle thread take-up cam wire

(C)

should

set to barely contact needle threads

with

needle

bar

at top

stroke.

Adjustment

can

be made

loosening

cam

mounting

screw

(E).

reposition

cam

forward

rearward

required

and

retighten

screw.

Auxiliary

strike-off (F) should

set

needle

threads contact strike-off when needle

bar

at BOTTOM of stroke with Thread Control

Assembly

adjustable

eyelet

(C,

Fig. 29)

set

"T".

Loosen

screw

(A)

and

position

strike-off (B) as specified

and

retighten

screw.

Thread

tension

needle

thread

should

just

enough

pull

uniform

stitches.

Thread

tension

app 1i

1ooper

thread

should be

just

enough

steady

thread.

From the library of: Superior Sewing22 Machine & Supply LLC

POWER "AIR-KLIPP" CHAIN CUTTER ADJUSTMENTS

NOTE: References to Fig. 31 are as viewed from rear of machine; references to

Fig. 32 are as viewed from left end of machine.

Upper knife (A, Fig. 31) can be rep1aced by

removing

two

screws

(B).

order

replace

1ower knife. . . the upper

knife,

rear

cover

and

thread

inlet

must

removed.

Lower

knife (C) is held in position

roll

(A,

Fig. 32) and tension spring (D, Fig. 31).

remove lower knife, lift up

and

tilt

the

right.

When

replacing

lower

knife,

sure

engage

end

tension

spring

through

the

ho1e in the side of

'1 ower

knife

before

inserting

the

slide

block (E).

Also be

sure that the s 1at in 1ower

knife

1ocated

over roll

pin.

SETTING

KNIFE

CROSS

OVER

Adjustment

will

necessary

after replacing

repairing

knives.

With

sewing

motor

switch

11 0FF 11

pas it ion

and

air

1i ne

connected to air motor, depress treadle until air motor begins to operate.

IMPORTANT! Be sure that lower knife does NOT strike against knife housing or feed chamber cover. Adjustment should be accomplished by loosening one screw (F, Fig. 31) and reposition left or right slightly.

Carefully press against slide block (E,					Fig.
31) until air motor stalls.
With treadle	still	depressed,	check	the knife
cross over.	The	cross over	of	the	lower

knife to the upper knife is positioned


correctly, -when				the	lower		knife is		1/32	inch
{.Bmm) from the front						of	the	upper	knife		as
shown	in	Figure			31.		If	adjustment			is
required,		loosen		screw		(F).		reposition		slide
block	(E)	slightly			as	required.			Retighten
screw {F)		and	recheck cross over.
		SHEAR ANGLE ADJUSTMENT
Shear	angle		should		be	.003		inch	(.076mm),

measured at rear cutting edge of lower knife

(B, Fig. 32) and cutting edge of upper knife

(D).

Adjustment can be made by turning lower knife adjusting screw (C, Fig. 32) counterclockwise (a small amount at a time) while manually

Fig. 30

Fig. 31

.003" (.076mm)

A?:35

Fig. 32

From the library of: Superior Sewing Machine & Supply LLC

Fig. 33

Fig. 34

SHEAR ANGLE ADJUSTMENT (Continued)

operating

slide

block

(E,

Fig.

31)

continuously checking with a piece of thread to see if knives are cutting. As soon as the knives fail to cut the thread and the shear angle is zero, turn screw (C, Fig. 32), same as (G, Fig. 31) clockwise approximately 1/4 turn. Check cutting action of knives with sewing motor switch 11 0W1 •

SETTING PRESSURE VALVES

Regulate valve on pneumatic control devices for air motor of the 11 AIR-KLIPP 11 Chain Cutter to approximately 20-22 p.s.i. (1.5 bar) when air motor is operating. Regulate valve on pneumatic control device for the suction air to obtain maximum suction, yet so that the


FABRIC TO BE				SEWN	will		not	be	cut	by	the
11 AIR-KLIPP 11			Chain Cutter knives.
				PULLER		TIMING
The Close-Coupled Puller (BELT									or	ROLLER)
must be timed so the intermittent										feeding
action stops before the needle/s										is/are
entering		the		work.	NOTE: This				will	depend
on the thickness of material									and	stitch
length		being		sewn.			If	adjustment			is
required, remove top cover which is										secured
with	four	screws.			Loosen		four	set	screws		(A,
Fig.	33)	in	sprocket			(B).	Advance or			retard

sprocket on shaft as required. When proper timing is obtained, position sprocket on its

shaft (left or right) so drive						belt	is
centered		in	the	puller	drive	assembly.
Torque four screws (A) to					35 in-lbs		(40
em/kg).
There	should		be	approximately		l/8	inch
(3.2mm) deflection in puller drive						belt	(A,
Fig.	34)	when		pressing	firmly	between

sprocket (B) and puller drive assembly. Adjustment can be made by loosening one screw

(C)securing eccentric (D) and rotate

eccentric		counterclockwise		as	viewed	in
Figure	34,	to	tighten belt,	clockwise		acts
the reverse.			Be sure to maintain .006			-.010
inch {.150-. 254mm) between				eccentric		and
drive housing.			Tighten screw (C) secure1y.
Replace	top	cover and tighten		four	screws.

From the library of: Superior Sewing24 Machine & Supply LLC

+ 56 hidden pages