UnionSpecial XF511B100MF User manual

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
SECOND
EDITION
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UNION SPECIAL CORPORATION
ALL RIGHTS RESERVED IN ALL COUNTRIES.
INFORMATION SUBJECT TO CHANGE WITHOUT NOTICE
CATALOG NO. 142M
SECOND EDITION
Copyright 1989
PRINTED IN USA
DECEMBER, 1989
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.
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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 eye1 et, 1 ow 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
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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 of 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. I 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. 12 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. 9 ONLY. Maximum recommended
speed 6500 R.P.M., depending on operation.
XF513EIO!HR Same as Style XF513EIOOHR except-equipped with a Close-Coupled Roller
Puller.
XF513Ell2HR Same as Style XF513EIOOHR except-equipped with Power "AIR-KLIPP"
Chain Cutter.
®
11
AIR-KLIPP
11
is a registered trademark of Union Special Corporation.
4
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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 in
the oil filler cap (A) and remain steady while machine is 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 be maintained
between the red lines of oil gauge.
To maintain maximum recommended speed and serviceability of these machines~ refer
to General Preventive Maintenance Schedule. Under no circumstances, should oil
remain in the machine for more than one year. Two oil drain plugs are located in
bottom of oil pan. ALWAYS replace oil filter when oil is changed. To 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.
5
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•
•
GEl
PRESSURE OIL
RETURN OIL
INLET
SIPHON RETURN
PRIORITY VALVE PRESSURE
FILTER BY-PASS
Fig. I
6
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PIVOT GUARD
TO LEFT FOR
THREADING
THREADING DIAGRAM
7
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PIVOT GUARD
TO LEFT FOR
r~~~
' '
'
'
r
o~ase of thread1ng, pull le~erdow~nd pu--;,-h-1
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
8
--------------------- -
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NEEDLES
Each needle has both a type and size number. Type number denotes the kind of
shank, point, length, groove, finish, and other details. Size number, stamped on
the needle shank in metric, denotes largest diameter of blade, measured midway
between shank and eye. Co 11 ecti ve ly, type and size number represent the camp 1 ete
symbol, which is given on the label of all needles packaged and sold by UNION
SPECIAL CORPORATION.
The type numbers of the needles recommended for each Style of machine covered by
this catalog are given in 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
108 GHS
128 GAS
128 GBS
DESCRIPTION
Round shank, ball point, double
groove, struck groove, ball eye,
spotted, chromium plated.
Round shank, round point, short,
double groove, struck groove, ball
eye, spotted, chromium plated.
Round shank, round point, short,
double groove, struck groove,
ball eye, spotted, ball point,
chromium plated.
SIZES AVAILABLE
70/027, 75/029,
80/032, 90/036,
125/049.
80/032, 90/036,
I00/040, 110/044,
125/049, 140/054,
150/060, 170/067.
80/032, 90/D36,
I00/040, 110/044,
I25/049, 140/054,
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 with a DURACOAT MASKED ALUMINUM needle
bar; TORQUE needle bar connection screw, 16 to 18 in-lbs. (18.4 to 20.7
em/kg).
THREAD MACHINE AS ILLUSTRATED.
9
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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).
10
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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
0
11
, hold
sprocket, turn handwheel 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 counter-
clockwise. If the reading is below non, hold
sprocket and turn handwheel clockwise.
Temporarily snug screws.
11
Fig. 5
J~-·
SKETCH A
Fig. 6
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A 'o 7
1-
LOOPER IN
FRONT OF
NEEDLE
SKETCH B
OPERATING
DIRECTION
--·---
LOOPER
BEHIND
NI::EDl E
LOOPER IN
FRONT OF
NE:EDLE
REVERSE
DIRECTION
--- ---
SKETCH C
For Proper SYNCHRONIZATION of
Looper & Needle
Dimensions
will be the same
Looper
BEHIND
Needle
in
SKETCH D
Looper in
FRONT of
Needle
io
REVERSE
Dirroction
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 to
position looper point even with the left side
of RIGHT needle and check the distance from
the eye of needle to the bottom of looper
blade.
Turn handwheel in reverse direction to
position looper even with the left side of
RIGHT needle and check the distance from the
eye
of needle to the bottom of looper blade.
If the distance was greater when handwheel
was turned in operating direction, as viewed
in Sketch B, loosen screws (K, Fig. 5) while
holding sprocket (B), turn handwheel
counterclockwise. If 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.
12
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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.
13
----
-,
l' '18 (4 7 6mm)l
-C
Fig. 7
Fig. 8
Fig. 9
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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.
14
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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 c1 ea 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
XF512EJOOHB-1
XF512E100MP-12
XF512EJOOMP-16
XF513EJOOHJ-8
XF513E100HJ-9
XF513E100HR-9
XF513E101HR-9
XF513Ell2HR-9
DIMENSION A FIG. 10
5/32 inch (4.0mm)
1/8 inch (3.2mm)
1/8 inch (3.2mm)
5/32 inch (4.0mm)
5/32 inch (4.0mm)
5/32 inch (4.0mm)
5/32 inch (4.0mm)
5/32 inch (4.0mm)
NEEDLE BAR HEIGHT
Turn handwhee1 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 ve1s from 1 eft 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
21225-1/8
21225-5/32
21225-5/32
21225-5/32
21225-5/32
21225-5/32
Fig.
13
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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 ho 1 der to the 1 eft and pi vat 1 ink. to
the right, while tightening screw (E).
NOTE: Change in stitch 1 ength 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).
16
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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 1 engthen 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 A 11 en wrench required). When moved
towards. the rear lengthens the stitch; moving
17
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 to rear clearances in throat
plate as described under
11
FEED DOG SETTINGS
11
whenever stitch length is changed.
Tighten screw (A) securely.
Fig. 20
-.--;
Fig. 21
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 of screw and top of slot in presser foot
as
viewed in Figure 22. There should be 1/16
inch (1.6mm) clearance between bottom of slot
in lifter lever link (A) and bottom of
presser bar guide (B) when foot 1 ifter 1ever
is released. If adjustment is 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
presser foot rests squarely on throat plate
and screw (D) is touching the bottom of
presser bar guide plate, then retighten
screws (E).
Turn presser spring regulating screw a 11 the
way down. then back off screw (D)
counterclockwise to obtain the l/32 inch
( .8mm) dimension in 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,
the distance from top of spring (A, Fig. 23)
to top of yoke (B) should be 5/8 inch
(15.9mm) and the line stamped across the
presser foot
bottom should line up with centerline of needle. As the presser foot
is raised, its bottom should move VERY SLIGHTLY towards the rear ... 1/64 inch
(.4mm) maximum. If adjustment is required, proceed as follows:
18
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 of presser bar guide
(B). Loosen screws (E) in presser bar guide
(B). Adjust spring regulator nut (C, Fig.
23) as required, so its 1ower surface is 5/8
inch (15,gmm) from top of yoke (B) as 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)
until the marks in presser foot bottom align
with centerline of needl,e and pas iti oned to
keep needle in cente·r of needle s1 at.
Tighten screws (E, Fig. 22) securing presser
bar guide to presser bar, ensuring stop screw
(D) in presser bar guide is resting on bottom
of presser bar guide plate.
Replace presser bar spring, spring guide and
spring regulating screw. Turn regulating
screw down until the top of 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 to shorten or
counterc 1 ockwi se to 1engthen the distance of
travel.
Loosen screw (F, Fig. 22) in lifter arm (G)
1116" 1.6mm)
Fig. 22
and rotate arm slightly as required to obtain 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.
19
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.
20
From the library of: Superior Sewing Machine & Supply LLC