KANSAI SPECIAL MZ Series User manual

INSTRUCTION 


Industrial Sewing Machines
First published : May 1997
No. 970049

INTRODUCTION
INTRODUCTIONINTRODUCTION
INTRODUCTION
Thank you for your purchasing Kansai Special's MZ Series.
Read and study this instruction manual carefully before beginning any of the
procedures and save it for later use.
1. This instruction manual describes adjustments and maintenance procedures on this
machine.
2. Before starting the machine, check to make sure the pulley cover, safety cover, etc.
are secured.
3. Before adjusting, cleaning, threading the machine or replacing the needle, be sure
to turn off the power.
4. Never start the machine with no oil in the reservoir.
5. Refer to the parts list as well as this instruction manual before maintenance.
If the machine includes a thread trimmer, read and study the instruction manual
for the thread trimmer carefully.
6. The contents described in this instruction manual are subject to change without
notice.

CONTENTS
CONTENTSCONTENTS
CONTENTS
1. NEEDLES & THREADING THE MACHINE
1-1 Needles ･･････････････････････････････････ 1
1-2 Replacing the needle ･･････････････････････ 1
1-3 Threading the machine ･･･････････････････ 1
2. MACHINE SPEED
2-1 Machine speed & direction in which the machine
pulley runs ･･････････････････････････････ 2
2-2 Motor & belt ･････････････････････････････ 2
3. LUBRICATION
3-1 Oil ･･････････････････････････････････････ 3
3-2 Oiling ･･･････････････････････････････････ 3
3-3 Replacing the oil and the oil element ･･･････ 3
4. SEWING MACHINE INSTALLATION
4-1 Cutting the machine table ･････････････････ 4
4-2 Installing the machine ････････････････････ 5
5. TIMING OF THE LOOPER TO THE NEEDLES
5-1 Angle and height for installing the looper ･･･ 6
5-2 Looper left-to-right movement ･････････････ 6
5-3 Looper setting distance ･･･････････････････ 6
5-4 Needle height ････････････････････････････ 7
5-5 Needle/looper front-to-back relationship ････ 7
5-6 Changing the looper orbit ･････････････････ 8
5-7 Changing the amount of the looper front-to-back
movement ･･･････････････････････････････ 9
6. FRONT AND REAR NEEDLE GUARDS
6-1 Position of the needle guard (rear) ････････ 10
6-2 Position of the needle guard (front) ････････ 11
7. SPREADER
7-1 Position of the spreader ･･････････････････ 12
7-2 Position of the spreader thread guide ･･････ 12
7-3 Timing of the spreader ･･･････････････････ 13
8. FEED DOGS & STITCH LENGTH
8-1 Feed dog height & tilt ････････････････････ 13
8-2 Stitch length ････････････････････････････ 14
8-3 Differential feed ･････････････････････････ 14
9. PRESSER FOOT
9-1 Presser foot pressure ････････････････････ 15
9-2 Position of the presser foot & foot lift ･･････ 15
10. STITCH FORMATION
10-1 Position of the needle thread guides ･･････ 16
10-2 Position of the thread guide on the needle
thread take-up ････････････････････････ 16
10-3 Timing of the needle thread take-up ･････ 16
10-4 Position of the needle thread guard ･･････ 17
10-5 Position of the thread guide of the spreader
thread take-up ････････････････････････ 17
10-6 Position of the thread guide of the looper thread
take-up ･･･････････････････････････････ 17
10-7 Position of the looper thread take-up ･････ 18
11. REPLACING THE TIMING BELT
11-1 Marks on the timing belts ･･･････････････ 18
11-2 To remove the timing belt ･･･････････････ 18
11-3 To place the timing belt ･････････････････ 19
12. CLEANING THE MACHINE ･･･････････ 19

1
< Note >
Before replacing the needle, be sure to turn off the machine.
A clutch motor continues running for a while after the machine is turned off.
Therefore keep on pressing the pedal until the machine stops.
【1】NEEDLES & THREADING THE MACHINE
1
11
1-
--
-1 Needles
1 Needles1 Needles
1 Needles
UY128GAS of Schmetz or Organ
Select the proper needle for the fabric and thread.
< Needles and needle size >
Schmetz Nm65 Nm70 Nm75 Nm80 Nm90
Organ #09 #10 #11 #12 #14
1
11
1-
--
-2 Replacing the needle
2 Replacing the needle2 Replacing the needle
2 Replacing the needle
To replace the needle, check the needle carefully to see
that the scarf is turned to the rear of the machine (see the
illustration). Then install the needle correctly.
1
11
1-
--
-3 Threading the machine
3 Threading the machine3 Threading the machine
3 Threading the machine
Thread the machine correctly by referring to the illustration below.
Threading the machine incorrectly may cause skip stitching, thread breakage and/or
uneven stitch formation. Thread tension should be changed according to various kinds of
conditions such as the thread to be used and/or the feeding amount (see Chapter 10 for
"Stitch formation").
A，B，C .. Needle threads
D............... Top cover thread
E .............. Looper thread

2
【2】MACHINE SPEED
2
22
2-
--
-1 Machine speed & direction in which the ma
1 Machine speed & direction in which the ma1 Machine speed & direction in which the ma
1 Machine speed & direction in which the machine pulley runs
chine pulley runschine pulley runs
chine pulley runs
Refer to the table below for maximum and standard
speeds of the Series. To extend machine life, run
the machine approximately 15~20% below the
maximum speed for the first 200 hours of operation
(approx. 1 month). Then run the machine at the
standard speed. The machine pulley turns
clockwise as the handwheel does as seen from the
machine pulley.
2
22
2-
--
-2 Motor & belt
2 Motor & belt2 Motor & belt
2 Motor & belt
Motor : 3-phase, 2-pole, 400W clutch motor
Belt : M type V belt
Select the proper motor pulley according to the
machine speed (refer to the motor pulley outer
diameter on the table below). Adjust where to
position the motor by pressing the finger onto the
middle of the belt so that 1~2cm deflection can be
achieved (see the illustration on the right).
< Machine speed >
Type Maximum speed Standard speed
MZ1003 4500SPM 4000SPM
MZ1103 4000SPM 3500SPM
< Motor pulley selection table >
Machine speed (SPM)Motor pulley
Outer diameter
(mm) 50Hz 60Hz
80 3300 3900
90 3700 4400
100 4100 4900
110 4500 (5400)

3
< Note >
When the oil filter cap is removed, the oil collected on
the element drips. Be careful.
【3】LUBRICATION
3
33
3-
--
-1 Oil
1 Oil1 Oil
1 Oil
Use Kansai Special’s genuine oil.
(Part No. 28-613 : 1000cc)
3
33
3-
--
-2 Oiling
2 Oiling2 Oiling
2 Oiling
■
To fill the machine with oil
Remove rubber plug A from the oil hole.
Fill the machine with oil until the oil level is at the
top line (see H in the illustration) on oil gauge C.
After the first lubrication, add oil so that the oil
level will be between H and L.
■
To check for proper oil flow
After filling the machine with oil, run the machine
to check the oil is splashing to oil flow sight window
B.
3
33
3-
--
-3 Re
3 Re3 Re
3 Replacing the oil and the oil element
placing the oil and the oil elementplacing the oil and the oil element
placing the oil and the oil element
To extend machine life, be sure to replace the oil
after the first 250 hours of operation.
To replace the oil, follow the procedures below.
1. Remove the V belt from the motor pulley and
then remove the machine from the table.
2. Remove screw D and then drain the oil.
Be careful not to stain V belt with the oil.
3. After draining the oil, be sure to tighten screw
D.
4. Fill the machine with oil by referring to 3-2
shown above.
If element E is contaminated, proper oiling may not
be performed. Clean the filter element every six
months. If just a little or no oil flows out from the
nozzle with the proper amount of oil in the machine,
check the element. To do so, remove oil filter cap F.
Replace the element if necessary.

4
【4】SEWING MACHINE INSTALLATION
4
44
4-
--
-1 Cutting the machine table
1 Cutting the machine table1 Cutting the machine table
1 Cutting the machine table
■Hole A shown below is for installing the electric presser foot lift.

5
4
44
4-
--
-2 Installing the machine
2 Installing the machine2 Installing the machine
2 Installing the machine
The MZ Series is available in two kinds of installations, non-submerged and
semi-submerged.
■Non-submerged installation
Install the machine correctly by
referring to the illustration.
Install the bolts and nuts to the
machine table.
Fit the rubber cushions onto the
bolts. Then mount the machine
properly onto the rubber cushions.
■Semi-submerged installation
Install the machine correctly by
referring to the illustration.
Secure the oil reservoir
installation brackets to the
machine table with screws. Fit
the rubber cushions onto the
screws.
Then mount the machine properly
onto the rubber cushions.

6
【5】TIMING OF THE LOOPER TO THE NEEDLE
5
55
5-
--
-1 Angle and height for installing the looper
1 Angle and height for installing the looper1 Angle and height for installing the looper
1 Angle and height for installing the looper
To obtain the proper angle and height, insert the looper fully into looper holder A and
then tighten screw B. The proper angle for the looper is 2º 30’. Distance at 25mm from
the point of the looper between the bottom of the looper blade and the extension line from
the point of the looper: Approximately 1.1mm

5
55
5-
--
-2 Looper left
2 Looper left2 Looper left
2 Looper left-
--
-to
toto
to-
--
-right movement
right movementright movement
right movement
On 2, 3 needle machines the point of the looper should be approximately 1mm above the
top of the left needle’s eye when the looper moves to the left on the back side of the
needles.
The point of the looper should be approximately 0.2mm above the top of the left needle’s
eye when the looper moves to the right on the front side of the needles (see the illustration
below). To adjust the timing of the looper to the needles, remove the machine cover,
loosen screws A on the timing pulley (upper), and shift the timing pulley (upper) by
turning the handwheel while holding the timing pulley (upper) by hand.
5
55
5-
--
-3 Looper setting distance
3 Looper setting distance3 Looper setting distance
3 Looper setting distance
The distance from the point of the looper to the center of the
needle bar should be 6mm when the looper is at its farthest
position to the right. The table below shows setting
distance A from the point of the looper to the center of the
right needle when the needle is at the bottom of its stroke
and the looper is at its farthest position to the right.
Setting distance A varies according to the needle space.
To make this adjustment, loosen screw C (see 5-1) on the
looper holder.
Needle space
(inch) Looper setting distance A
3.2mm (1/8) 4.4mm
4.0mm (5/32) 4mm
4.8mm (3/16) 3.6mm
5.6mm (3/32) 3.2mm
6.4mm (1/4) 2.8mm

7
5
55
5-
--
-4 Needle height
4 Needle height4 Needle height
4 Needle height
The point of the looper should be 0.8~1.2mm above the
top of the left needle's eye on the back side of the
needle when the point of the looper has reached the
center of the left needle with the machine pulley
turning in the operating direction (see 5-2).
To adjust the height of the needle,
1. Set the needle bar at the top of its stroke.
2. Remove the plug on the head cover.
3. Loosen screw A.
4. Move the needle bar up or down.
5
55
5-
--
-5 Needle/looper front
5 Needle/looper front5 Needle/looper front
5 Needle/looper front-
--
-to
toto
to-
--
-back relationship
back relationshipback relationship
back relationship
The point of the looper should be 0.8~1.2mm above the
top of the left needle's eye on the back side of the needle
when it has reached the center of the left needle.
With the point of the looper at this position, set the
clearance between the left needle and the point of the
looper at approximately 0.2~0.3mm.
Then the looper should barely touch the right needle.
■On 3 -needle machines, the clearance between point A
of the looper and left needle C should be 0.2~0.3mm.
To make this adjustment, loosen screw D on the looper
holder first. Then adjust the needle guard (rear) so
that it presses right needle B slightly to the front.
With the needle guard (rear) and needle B in this
position, set the clearance between the point of the
looper and needle B at 0~0.05mm.
■On 2-needle machines, the clearance between point A
of the looper and left needle F should be 0.2~0.3mm.
To make this adjustment, loosen screw D on the looper
holder first. Then adjust the needle guard (rear) so
that it presses right needle E slightly to the front.
With the needle guard (rear) and needle E in this
position, set the clearance between the point of the
looper and needle E at 0~0.05mm.
< Note >
After the above adjustment, install the needle plate and
check to make sure each needle drops into the center of
each needle hole.
< Note >
When moving the looper holder front or back, be careful not to change the looper
setting distance.