Identity verified · evidence for each owner answer
Identity verified · evidence for each answer
Using and maintaining this machine
Check the conditions alongside each answer. Foot attachment, shank type and adapter requirements are separate; one does not establish universal accessory fit.
Needles and threading
Supplied needle and conditional alternative
conditional
Supplied Schmetz EL x 705 needles, available in80/12 and90/14. Conventional130/705H needles may be used for special threads and fabrics.
Not unrestricted interchangeability. Flat side rear, fully inserted and no dull/burred needles; replacement follows exact model procedure with power off/unplug before parts. No tilting needle-clamp instruction transferred to845.; Exact 745 only. Source conditions and safety retain priority; no filename date, sibling, universal fitment or public redistribution authority inferred.
DF dial range0.5–2; align setting mark with the number shown in display. Standard feeding equalizes the front/rear feed; positive feed addresses waves in stretchy fabrics, negative feed puckering; manual specifies0.5 for removing puckers on sheer fabrics.
Fabric-dependent guidance, not guaranteed results or universal settings. Only shared745 operations under explicit845 bridge; no top-cover-specific settings transferred.; Exact 745 only. Source conditions and safety retain priority; no filename date, sibling, universal fitment or public redistribution authority inferred.
Standard foot-pressure position5; six positions, adjusted up or down according to fabric type.
No mount, shank, adapter or aftermarket fitment established; preserve power-off/unplug guidance for part changes. This is setting information, not a foot removal procedure.; Exact 745 only. Source conditions and safety retain priority; no filename date, sibling, universal fitment or public redistribution authority inferred.
Oiling every8 hours of actual sewing operation; exact maintenance page specifies a drop above and below the illustrated oiling arrows.
Informational interval/location only, not stand-alone disassembly instructions. Power off/unplug; use complete illustrated printed104 cleaning and restoration instructions. Source literally says needle bar during foot restoration; do not silently replace with presser bar. No inferred oil formulation or general machine-wide oiling points.; Exact 745 only. Source conditions and safety retain priority; no filename date, sibling, universal fitment or public redistribution authority inferred.
Detailed specifications, compatible parts, and source library
Evidence coverage
Core answers and cited items
Machine category: Not yet established
Core domains answered: None yet
Domains with cited compatible items: None yet
Unknown is not incompatible. A missing answer means the current official evidence does not support one yet.
Official source library
Documents used on this page
Open the exact OEM PDF page or captured HTML edition when a safe destination exists; otherwise SewGraph labels the OEM support-page fallback honestly.
elna 745-845 Instruction Manual 2023-1
instruction manual
Source authority: Official OEM PDF
Open official source destination · 1 unique proof passage:Proof E1
Evidence library
10 exact proof passages from 1 OEM document
Every passage below says exactly what visible fact it proves. Repeated references to the same locator are counted once; identity evidence never counts as compatibility evidence.
Open exact proof passages · 10 unique proof passages
Official OEM PDF
What this passage proves
Supplied needle and conditional alternative: Supplied Schmetz EL x 705 needles, available in80/12 and90/14. Conventional130/705H needles may be used for special threads and fabrics.
34
M. Thread Chain Looper Tension (Brown)
Thread the chain looper tension for either
5 thread stitch or after selecting any stitch
in program 10.
Example:
•
Yellow N – 5 Thread: thread chain
looper.
•
Empty space – 3 Thread Wide and
Overlock 3: do not thread chain
looper.
Needles
The machine is supplied with Schmetz brand
EL x 705 needles. This is an industrial type
needle that ensures proper stitch formation at
high speeds. The scarf (cut out groove on
needle back) is important because it allows
the looper to come near the needle to catch
the thread and form a stitch. EL x 705 needles
are available in two sizes – 80/12 and 90/14.
It is possible to use conventional sewing
machine needles – 130/705H – for special
threads and fabrics.
Common stitch problems can often be traced
directly to the needle.
•
Needle inserted incorrectly. (Flat side
should be to the back.)
•
Needle not pushed up high enough into
position. (See page 36.)
•
Needle is dull or has burrs. (Change
needles frequently; even new needles can
have imperfections.)
Supplied needle and conditional alternative: Supplied Schmetz EL x 705 needles, available in80/12 and90/14. Conventional130/705H needles may be used for special threads and fabrics.
Differential feed: DF dial range0.5–2; align setting mark with the number shown in display. Standard feeding equalizes the front/rear feed; positive feed addresses waves in stretchy fabrics, negative feed puckering; manual specifies0.5 for removing puckers on sheer fabrics.
Stitch length setting: SL dial range0.5–5; align its setting mark with display. Manual examples use3 for5-thread/3-thread-wide and2.5 forOverlock3.
Pressure setting: Standard foot-pressure position5; six positions, adjusted up or down according to fabric type.
Oiling interval: Oiling every8 hours of actual sewing operation; exact maintenance page specifies a drop above and below the illustrated oiling arrows.
18
Connecting Machine to Power Supply
The power switch should be off. Before
connecting the power cord/foot control, make
sure the voltage and frequency shown on the
machine are identical to your electrical power.
Insert the machine/foot control plug into the
machine and the power supply plug into the
wall.
For Your Safety
1. While the machine is in operation, always
keep your eye on the sewing area and do
not touch any moving parts – needle(s),
flywheel, movable cutting blade, loopers,
etc.
2. Always switch off the power switch and
unplug from the power supply:
•
when leaving the machine unattended
•
when attaching or removing parts
•
when cleaning the machine.
3. Do not place anything on the foot control.
Supplied needle and conditional alternative: Supplied Schmetz EL x 705 needles, available in80/12 and90/14. Conventional130/705H needles may be used for special threads and fabrics.
Differential feed: DF dial range0.5–2; align setting mark with the number shown in display. Standard feeding equalizes the front/rear feed; positive feed addresses waves in stretchy fabrics, negative feed puckering; manual specifies0.5 for removing puckers on sheer fabrics.
Stitch length setting: SL dial range0.5–5; align its setting mark with display. Manual examples use3 for5-thread/3-thread-wide and2.5 forOverlock3.
Pressure setting: Standard foot-pressure position5; six positions, adjusted up or down according to fabric type.
Oiling interval: Oiling every8 hours of actual sewing operation; exact maintenance page specifies a drop above and below the illustrated oiling arrows.
Please use the 745 instruction
manual to understand your 845
machine functions.
The operation of the 845 is the
same except the tilting needle
clamp has been removed and the
top cover mechanism has been
added.
Top Cover Accessories
1.
Spreader Device
2.
Round Top Cover Guide (insert
into R2 needle position)
3.
Triangle Top Cover Guide
(attached on Top Cover Lever –
can be removed to create more
sewing surface space) and Coin
Screw
4.
Top Cover Foot "R" (replaces
Clear Cover Hem Foot "F")
NOTE: Never use the quilt guide
when sewing any top cover.
Top Cover (Triple, Wide and
Narrow)
A decorative industrial topstitch, the
Top Cover measures 5.0 mm or 2.5
mm in width. It uses two or three
needles, spreader device and the
chain looper to form a cover hem with
loops on both the top and bottom side
of the fabric.
Common Uses
•
Hem finish.
•
Topstitching.
2
Differential feed: DF dial range0.5–2; align setting mark with the number shown in display. Standard feeding equalizes the front/rear feed; positive feed addresses waves in stretchy fabrics, negative feed puckering; manual specifies0.5 for removing puckers on sheer fabrics.
Stitch length setting: SL dial range0.5–5; align its setting mark with display. Manual examples use3 for5-thread/3-thread-wide and2.5 forOverlock3.
24
C. Program Number
The program display automatically sets
the thread tensions for the selected
program number shown. In addition,
instructions for machine set-up are
displayed using easy to read symbols.
NOTE: It is very important to have the
SELECT number in the display panel
correspond to the desired stitch. We
recommend physically setting-up the
machine before attempting to thread. This
ensures that all machine parts are
correctly positioned and makes threading
easier.
D. DF = Differential Feed
Move the DF dial until the setting mark is
aligned with the number shown in the
display panel. Differential feed may be set
from 0.5 to 2.
Example:
Move DF dial to 1 setting.
E. SL = Stitch Length
Move the SL dial until the setting mark is
aligned with the number shown in the
display panel. Stitch length may be set
from 0.5 to 5.
Example:
•
5 Thread and 3 Thread Wide – move
SL dial to 3 setting.
•
Overlock 3 – move SL dial to marked
line located between 2 and 3 for the
2.5 setting.
Differential feed: DF dial range0.5–2; align setting mark with the number shown in display. Standard feeding equalizes the front/rear feed; positive feed addresses waves in stretchy fabrics, negative feed puckering; manual specifies0.5 for removing puckers on sheer fabrics.
88
Differential Feed
Differential feed on an overlock is a two-part
feed dog which feeds in the fabric at different
ratios. The front part of the feed dog pushes
more or less fabric under the foot than the
rear part of the feed dog is feeding out. This
feature is useful when sewing knits which
have a tendency to stretch and create waves
when sewn on an overlock machine.
Differential feed is also good on sheer fabrics
which tend to pucker when sewn. Use the 0.5
setting for removing puckers. There are two
kinds of differential feed: negative and
positive.
Standard Feeding
The front and rear feed dogs work as a single
unit. The fabric feeds in and out with the same
ratio.
Positive Feeding
The looser and stretchier the fabric, the more
the front part of the feed dog must feed in and
the less the rear part of the feed dog must
feed out. Waves are eliminated.
Negative Feeding
The front part of the feed dog feeds in less
fabric than the rear part feeds out. The fabric
is held taut by the feed dogs. Puckering is
eliminated.
Pressure setting: Standard foot-pressure position5; six positions, adjusted up or down according to fabric type.
72
SECTION IV
Test Sewing
Setting Foot Pressure
The standard setting is position 5. The dial
may be changed to increase or decrease the
foot pressure depending on the type of fabric.
There are six positions.
Controlling Sewing Speed
Sewing speed varies with the foot control. The
harder you press on the foot control, the faster
the machine runs.
Waste Tray
Attach the waste tray to the front cover. The
tray will catch fabric scraps that are cut off.
Oiling interval: Oiling every8 hours of actual sewing operation; exact maintenance page specifies a drop above and below the illustrated oiling arrows.
104
SECTION VII
Maintenance
Proper machine cleaning and oiling are
essential to ensure maximum machine
performance.
Cleaning and Oiling
Unplug the machine from the electrical outlet.
Open the front and side covers.
Remove the presser foot by pushing the lever
behind the needle bar.
Remove the needle plate by pushing down its
release lever (a).
Disengage the movable cutting blade.
Use the brush to remove all lint and fiber
accumulation.
Place a drop of oil above and below the oiling
arrows. Oiling should be performed for every
8 hours of actual sewing operation.
Reattach the needle plate by pressing down
on its front section until it snaps onto the
needle plate screw (b).
To reattach the presser foot, place the foot
underneath the presser foot area and lower
the needle bar. The foot will snap back into
place.