Sailrite Leatherwork 3978-00 User manual

Table of Contents
Leatherwork
Legs & Tabletop Components �������������������1
Tabletop & Legs............................................ 1
Tabletop & Legs Hardware ........................... 2
Leatherwork
Sewing Machine Components�������������������3
Head Box ..................................................... 3
Servo Motor.................................................. 4
Accessories.................................................. 4
Assembling the Leatherwork ��������������������5
Leg Assembly............................................... 5
Attaching Tabletop........................................ 6
Assemble & Attach Treadle........................... 7
Attach Idler Pulley ........................................ 8
Preparing Workhorse®Motor ........................ 9
Tabletop Motor Attachment ......................... 10
Linkage Bar Installation ...............................11
Install Oil Tray & Hinges ............................ 12
Install Sewing Machine & Cover Bracket ... 13
Securing the Balance Wheel ...................... 14
Installing Timing Belts ................................ 15
Installing Belt Covers.................................. 16
Changing Motor Rotation............................ 17
Insert Thread Stand Posts ......................... 18
Install Light & Wire .................................... 18
Removing the Fabric Sample...................... 19
Sew like a pro with Sailrite®
For in-depth information on setup and
assembly of your Leatherwork Sewing
Machine, please reference our free video at
Sailrite�com/leatherwork-setup or search
#300525XHT at Sailrite.com.

1 | Sailrite.com Leatherwork®Assembly Instructions | 2
Leatherwork Legs & Tabletop Components
Tabletop & Legs
Tabletop & Legs Hardware

3 | Sailrite.com Leatherwork®Assembly Instructions | 4
Head Box
Leatherwork Sewing Machine Components
Servo Motor Box Accessories

5 | Sailrite.com Leatherwork®Assembly Instructions | 6
Leg Assembly
Find bolts with washer and lock washer (A).
Stand both L-legs (B) upside down and bolt the
back support bar (C) to the back of the table legs
(1). Do not tighten down.
Find treadle mount bar (D), bolts (E) and plates
(F). Place the treadle mount bar (D) 3-1/2 inches
(8.9cm) from the front toe of the legs (2). Bolt
each side of the treadle mount bar to the bottom
of the legs by placing plate (F) in the slot (G) and
using bolt (E) to secure.
A
C
B
B
D
E
F
G
On a soft surface, place the tabletop top side
down. The recess (H) should be upright and to
your left. With the back of the legs facing you,
place them on the tabletop and line up the
back pilot holes in the table with the leg mount
holes (I).
Loosely thread a hex head lag screw (J),
lock washer (K) and large at washer (L) into
each back pilot hole (I). Then align the front
leg holes to their corresponding tabletop pilot
holes and thread in a screw (J), lock washer
(K) and at washer (3, L).
Use a 3/8-inch socket wrench to tighten the
screws, compressing the lock washers (K).
Now tighten the four bolts (M) attaching the
back support bar (C).
The legs have adjustable feet (N). Rotate the
locking nut (O) in a manner allowing each foot
to be threaded all the way in. Once the table
is upright this makes it easier to adjust one or
two feet to level the table. Once adjusted, use
the nut to lock the position permanently.
JK
I
M
BACK
H
N
O
L
1
3
2
Assembling the Leatherwork Attaching Tabletop
D
C

7 | Sailrite.com Leatherwork®Assembly Instructions | 8
Assemble & Attach Treadle
Find the treadle pedal (A) and use Band Cto
mount the L-bracket (D) as shown (4).
Flip the table on its back side and use E, F
and Gto install the treadle in the center of the
treadle mount bar (5).
The tabs on Gare to be placed in the slots (H) of
the treadle mount bar (6). Ensure that L-bracket
(D) attachment arm (I) is pointing toward the
back support bar (J). Tighten down.
Important: Check to make sure the treadle
moves freely after the bolts (F) are tightened. If
not, loosen bolt and reposition one of the pivots.
B
TABS
G
G
J
I
D
C
B
A
Attach Idler Pulley
Stand the table upright and place the two
carriage bolts (K) through the holes left of the
belt slot (L). Use a mallet or hammer to pound
the bolts ush with the top of the table (7, M).
Flip the table upside down and place the slots
(N) of the Idler Pulley L-Bracket over the bolts
and slide it so the end is lined up with the score
mark (O) on the table (9).
Use P, Q and R to lock the Idler Pulley
L-Bracket in place.
7
K
L
M
B
O
K
P
Q
R
F
E
8
9
6
5
4
H
N

9 | Sailrite.com Leatherwork®Assembly Instructions | 10
Place key (A) in keyway (B) on motor shaft. If
t is too tight, use sandpaper or a dremel tool
to smooth out the key. Loosen the set screws
(C) in the ange of the black 21-tooth pulley so
that it can be installed on the motor shaft. The
keyway in the pulley should t snuggly over the
key (A) on the motor shaft. Use washer (D),
lock washer (E) and locking nut (F) to lock the
pulley in place. Tighten set screws (C).
Flip the motor upside down and install the belt
cover bracket (G) with three screws (H). Orient
the bracket as shown (11). The screw closest
to the Workhorse Motor Plate (I) should be 3/8
inch (0.95cm) from the end of the slot (13).
Loosen the pivot screw (J) on the Workhorse
Servo Motor. The side of the Workhorse Motor
(K) should be perfectly vertical with the ground.
Use a Triangle or Square (L) to set the angle
and tighten the pivot screw (J).
H
3/8 inch
(0�95cm)
Tabletop Motor Attachment
With the table upright, use a mallet or hammer
to pound the three carriage bolts (M) into the
three through-holes in the tabletop (14).
Flip the table upside down and place the slots
(N) of the Workhorse Motor Bracket over the
bolts (M) and slide it so the end is lined up with
the score mark (O) on the table. Use P, Qand
R, in that order, to lock the Workhorse in place.
M
P
M
QR
N
O
J
11
10 14
13
12
16
15
Preparing Workhorse®Motor
H
L
I
HK
G
F
A
E
B
DC
N

11 | Sailrite.com Leatherwork®Assembly Instructions | 12
Linkage Bar Installation
Loosen the center nut (A) on the linkage bar
(B) so that it will slide apart. Bolt the linkage
bar (B) to the outermost hole of the motor
operation lever (C) and the L-bracket (D).
Increasing or decreasing the overlap of the
linkage bar changes the angle of the treadle
pedal (E).
Note: You want at least a 1/4-inch clearance
between the bottom of the treadle pedal and
the oor (F).
A
B
C
E
F
Install Oil Tray & Hinges
Find the metal oil tray (G) and reference the belt slot (H) of the tabletop. Place the oil tray (G) under
the tabletop and line up the mounting holes in the oil tray to the pilot holes inside the rim of the
tabletop cutout (I). Use the four at head tapping screws (J) to attach the oil tray (18).
Place the two hinges (K) into the hinge hole cutouts in the tabletop (L). Secure with included wood
screws (M). Find and insert the support pin (N).
KM
G
H
L
J
I
17
18
DK
M
N

13 | Sailrite.com Leatherwork®Assembly Instructions | 14
Install Sewing Machine & Cover Bracket
A
B
C
D
E
Securing the Balance Wheel
Unscrew the reverse-threaded Posi-Pin®Nut (F).
Slide the balance wheel (G) onto the bushing (H).
Reinstall the Posi-Pin Nut (F).
Push the Posi-Pin® (I) through one of the holes
in the balance wheel (J). While maintaining
pressure on the Posi-Pin (I), rotate (K) the
balance wheel (G) until the Posi-Pin (I) locks
into one of the balance wheel bushing holes (L).
Rotation of the balance wheel will now cause the
machine to function.
To disengage the machine (for bobbin winding),
pull the Posi-Pin (I) out of the balance wheel
(G). The balance wheel will now rotate without
operating the machine. Push the Posi-Pin (I) into
the hole at the center of the Posi-Pin Nut (M) to
store.
Note: Always rotate the balance wheel by
grabbing the top of the wheel and rotating down
toward you (K).
F
L
I
H
G
J
K
M
Loosen the hinge hole set screws (A) so that
the holes (B) are not obstructed (20).
Remove the long screw (C) from the head of
the sewing machine. Take the smaller part of
the belt cover assembly (D) and secure with the
screw (21, C).
Carefully lift the sewing machine and place
the hinge holes (B) over the hinge pins in the
tabletop (E). Allow the sewing machine to slide
all the way back/down on the hinge pins and
carefully rest the machine on the tabletop (22).
Tighten the set screws (A). Pivot the sewing
machine upright.
22
21
19
20
23
24

15 | Sailrite.com Leatherwork®Assembly Instructions | 16
Installing Timing Belts
Find the long and short timing belts (Aand
B) and box end wrench (C). Use the box end
wrench (C) to loosen the shaft (D) of the idler
pulley (E) so that the shaft will be able to move
up and down (26). Take the shorter timing belt
(B) and place it over the big pulley (F) of the
idler pulley and around the motor pulley (G).
Then push the pulley shaft (D) up, tensioning
the belt, and tighten.
Place the larger timing belt (A) over and to
the left of the balance wheel (H). Feed the
belt through the belt slot (I) and onto the small
pulley of the idler pulley (27, J). With the Posi-
Pin (p. 14, I) disengaged, rotate the balance
wheel while guiding the belt into place around
the balance wheel (just like a bicycle chain).
Check the tension of both timing belts by
pressing at the middle of each belt. There should
be equal tension between the two belts. If one
is looser, use the box end wrench (C) to loosen
and tighten the idler pulley accordingly (26).
A
B
C
I
J
F
DC
E
B
G
AH
Installing Belt Covers
Find the belt cover (K) and the included small
screw (L). Slide the belt cover (K) over the belt
cover bracket on the Workhorse®Motor. Thread
the small screw (L) through the hole (M) in the
belt cover and tighten with a screwdriver to lock
it to the belt cover bracket.
The nal belt cover (N) has a pointed forked
end (O) that slides between the washer and the
black bracket (31). The keyway cut (P) on the
belt cover (N) will lock onto the shaft of the key
(Q) of its mating component (30).
L
M
K
N
O
Q
P
25
26
27
31
30
29
28

17 | Sailrite.com Leatherwork®Assembly Instructions | 18
Changing Motor Rotation
Plug the motor in and turn it on. The standby
screen will show a “P” with a rotating dash (33).
With the Posi-Pin disengaged (p. 14, M)operate
the machine and make sure the motor runs in a
counterclockwise direction (A).
If the balance wheel is spinning the opposite
direction from (32), follow the instructions below
to reverse the direction.
1. Press the “P” button four times until the
LED display reads “n3.”
2. Press the “S” button multiple times to
select between “0” and “1.”
3. Select “1” and the motor will run clockwise.
4. Select “0” and the motor will run
counterclockwise (this is the setting the
motor should be on).
5. Press the “P” button to save the selection
of “0.”
6. Turn motor off then on.
A
Install Light & Wire
Plug light into included extension cord (F). To
attach the LED light (G), place the magnetic
light in your desired location.
Note: If it is a 110 volt sewing machine, the light
will plug into the back of the Workhorse®Servo
Motor. If it is a 220-240 volt machine, the light
will plug into a wall outlet.
Use the included adhesive pieces and wire
ties (H) to secure the light cord in your desired
locations. Make sure to keep the cord out of the
way of any moving machine parts.
Insert Thread Stand Posts
Locate the thread stand posts (B, C and D). The
longest post with looped end (E) will drop into
the back corner hole on the tabletop. Gently
tap the non-tapered end of the short post (C) in
the tabletop corner hole just in front of the taller
post. The thread post with holes in it (D) gets
screwed into the top of the machine (35).
E
H
G
B
C
D
32
33
34
35
F

19 | Sailrite.com Leatherwork®Assembly Instructions | 20
Removing the Leather Sample
Ensure the Take-Up Arm (A) is all the way up. If it is not, engage the Posi-Pin®(p.14) and raise the
needle by grabbing the top of the balance wheel and rotating toward the front of the machine (B).
Never rotate in the other direction. Use the foot lift (C) to lift the feet. Remove the fabric sample and
cut the thread coming from below the machine.
B
36
C
A
Now that your table is assembled and the machine and motor are installed, please proceed to the
Leatherwork Guidebook to learn everything about your machine including how to wind bobbins,
how to set your stitch length, and general maintenance and troubleshooting.
Continue to the
LEATHERWORK
Guidebook

122926*1
Assembly Instructions for Sailrite®Leatherwork®
Qty: 1
Original manual in English
Version 1-21
Leatherwork®Patented Technology
Patent #7438009
Sailrite.com
Equipping you to sew
Copyright ©2021
Serial #: �������������������������������������������
Date of Purchase: ������������������������������������
Service & Support
We are proud to provide you with everything you need to successfully maintain and
repair your Leatherwork Sewing Machine. Your purchase comes with personalized
support for the lifetime of your machine. We will do our best to satisfy every support
request accurately, completely and in a timely manner.
Customer Service Questions or Concerns
To start a support case, go to Sailrite�com/support and ll out the online form.
One of our support staff members will review your case and contact you.
122926*1