KANSAI SPECIAL DX9902-3U User manual

INSTRUCTION 


Industrial Sewing Machines
DX9902-3U
DX9900-4U
First published : July 1997
No. 970038

INTRODUCTION
INTRODUCTIONINTRODUCTION
INTRODUCTION
Thank you for your purchasing Kansai Special's DX 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 ･･･ 5
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. ADJUSTING THE NEEDLE GUARDS
(FRONT AND REAR)
6-1 Position of the needle guard (rear) (2-3U) ･･ 10
6-2 Position of the needle guard (rear) (004U) ･･ 10
6-3 Position of the needle guard (front) (2-3U) ･11
7. FEED DOGS & STITCH LENGTH
7-1 Feed dog height & tilt ････････････････････ 11
7-2 Feed dog left-to-right position ･････････････ 12
7-3 Feed dog front-to-back position ･･･････････ 12
7-4 Stitch length ････････････････････････････ 12
8. PRESSER FOOT
8-1 Presser foot pressure ････････････････････ 13
8-2 Position of the presser foot & foot lift ･･････ 13
9. STITCH FORMATION
9-1 Position of the needle thread guides ･･････ 14
9-2 Position of the thread guide on the needle thread
take-up ･･･････････････････････････････ 14
9-3 Timing of the needle thread take-up ･････ 14
9-4 Position of the thread support ･･･････････ 15
9-5 Adjusting the looper thread take-up ･･････ 15
9-6 Adjusting the amount of the looper thread to be
supplied ･･････････････････････････････ 15
9-7 Removing the needle plate ･･････････････ 15
10. ADJUSTING THE KNIFE DEVICE
10-1 Adjusting the cutting width ･････････････ 16
10-2 Disassembling/reassembling the lower knife 16
10-3 Disassembling/reassembling the upper knife 16
10-4 Overlap of the upper and lower knives ･･･ 17
10-5 Adjusting the stroke of the upper knife ･･･ 17
10-6 Resharpening the knives ････････････････ 17
11. ADJUSTING THE ROLLERS AND THE
GUIDES
11-1 Installing the rollers ･･･････････････････ 18
11-2 Sewing ････････････････････････････････ 19
11-3 Adjusting the rollers ････････････････････ 19
11-4 Adjusting the guides ･･･････････････････ 20
12. ADJUSTING THE REAR PULLER
12-1 Position of the hand lever and the stopper 21
12-2 To adjust the puller pressure ････････････ 21
12-3 To adjust the feeding amount of the rear puller ･22
13.REPLACING THE TIMING BELT
13-1 Marks on the timing belts ･･･････････････ 22
13-2 To remove the timing belt ･･･････････････ 22
13-3 To place the timing belt ･････････････････ 23
14. CLEANING THE MACHINE ･･･････････ 23

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
TV×5 of Schmetz or Organ
Select the proper needle for the fabric and thread.
< Needles and needle size >
Schmetz Nm80 Nm90 Nm100
Organ # 12 # 14 # 16
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 9 for
"Stitch formation").
A，B，C，D，E ･･ Needle threads
F，G，H，I ･･････ Looper thread

2
【2】MACHINE SPEED
2
22
2-
--
-1 Machine speed & direction in which the machine pulley runs
1 Machine speed & direction in which the machine pulley runs1 Machine speed & direction in which the machine pulley runs
1 Machine speed & direction in which the machine 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
DX 4500SPM 4000SPM
DX-LK 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

5
4
44
4-
--
-2 Installing the machine
2 Installing the machine2 Installing the machine
2 Installing the machine
■
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.
■
Replacing the belt cover
Install the belt cover correctly by referring to the
illustration.
【5】TIMING OF THE LOOPER TO THE NEEDLES
5
55
5-
--
-1 Angle and height
1 Angle and height1 Angle and height
1 Angle and height for installing the looper
for installing the looperfor installing the looper
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 2.5º.
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

6
5
55
5-
--
-2 Looper left
2 Looper left2 Looper left
2 Looper left-
--
-to
toto
to-
--
-right movement
right movementright movement
right movement
The point of the looper should be approximately 1.2~1.5mm 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 0.8~1.1mm 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
Adjustment should be made by referring to looper A.
When the needle is at the bottom of its stroke with
the looper at the extreme right end of its travel,
setting distance B from the point of the looper to the
center of the right needle varies according to the
needle space (see the table below).
Adjustment is made by loosening screw C on the
looper holder.
■
If the needle space is different, the distance from the
point of the looper to the center of the right needle
should be 6.5mm on cover stitch machines.
On double chainstitch machines it should be 4.5mm.
Needle space
Looper setting distance
Center of the right needle
(B)
4.8-10-10-10 4.1mm
02-3U 5.0-13-13-13 4mm
8.5-8.5-8.5 4.5mm
9.5-9.5-9.5 4.5mm
00-4U 6.4-6.4-6.4 4.5mm

7
< Note >
After the above adjustment, check to make sure each
needle drops into the center of each needle hole.
<Note>
Make sure the setting distance is not changed when the
looper holder is moved front or back.
5
55
5-
--
-4 Needle height
4 Needle height4 Needle height
4 Needle height
The point of the looper should be 1.2~1.5mm 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
■
2-3U
When point B of the looper reaches left needle C, there
should be a clearance of 0.2~0.3mm between point B of
the looper and left needle C. When point B of the
looper reaches right needle E, they should slightly
touch with each other. Adjustment is made by
loosening screw D on the looper holder. After the
above adjustments are made, the clearance between
the point of the looper and right needle E should be
0~0.05mm with right needle E deflected by the needle guard (rear).
■
004U
When point B of the looper reaches needle C, point B of
the looper should slightly touch needle C.
Adjustment is made by loosening screw D on the looper
holder. After the above adjustments are made, the
clearance between point B of the looper and needle C
should be 0~0.05mm with needle C deflected by the
needle guard (rear).

8
5
55
5-
--
-6 Changing the looper orbit
6 Changing the looper orbit6 Changing the looper orbit
6 Changing the looper orbit
When the looper moves around the needles, the
point of the looper on 2-needle and 3-needle
machines barely touches the right needle and the
clearance between the point of the looper and the
left needle is approximately 0.2~0.3mm.
■The timing mark is at point E : standard
■When the timing mark is at point C, The clearance
between the point of the looper and the left needle
when the looper moves to the left decreases.
The clearance when the looper moves to the right
increases. Then the point of the looper touches the
right needle. Skip stitching may occur when the
looper moves to the right.
A thread chain is not produced smoothly.
■When the timing mark is at point D, The clearance
between the point of the looper and the left needle
increases. Skip stitching may occur when the
looper moves to the left. The needle extremely
touches the back of the looper, causing needle
breakage.
< Note >
To sew under good conditions, after changing the amount of the looper front-to-back
movement adjust the looper orbit by moving the timing mark slightly to C or D.
To change the looper's orbit, loosen screw B on eccentric A and shift the timing mark by
moving eccentric A front or back. The timing mark is factory-set for standard.
Do not change the orbit extremely.

9
5
55
5-
--
-7 Changing the amount of the looper front
7 Changing the amount of the looper front7 Changing the amount of the looper front
7 Changing the amount of the looper front-
--
-to
toto
to-
--
-back movement
back movementback movement
back movement
The clearance between the point of the left needle
and the back side of the looper when the looper
moves to the right from the extreme left end of its
travel should be 0.3~0.6mm (The needle is pressed
to the back). The distance between the point of the
left needle and the center of the looper's eye on the
back side of the looper should be 3~3.5mm.
The amount of the looper front-to-back movement is
factory-set properly for needle count #14 (Nm90).
If you use needle counts #11 (Nm75), adjust the
amount as required.
Remove the inside cover.
Loosen nut B while holding screw A for the looper
front-to-back adjusting pin with a screwdriver.
Then move the front-to-back rod front or back.
To increase the amount, move alignment mark D on
the front-to-back rod to the front from mark C on the
looper bar guide.
To decrease the amount, move mark D to the back.
Adjust according to the needle count.
< Note >
If you change the amount of the looper front-to-back movement, the clearance between
the point of the left needle and the back side of the looper when the looper moves to the
right from the extreme left end of its travel should be 0.3~0.6mm.

10
【6】ADJUSTING THE NEEDLE GUARDS (FRONT AND REAR)
6
66
6-
--
-1 Position of the needle guard (rear) (2
1 Position of the needle guard (rear) (21 Position of the needle guard (rear) (2
1 Position of the needle guard (rear) (2-
--
-3U)
3U)3U)
3U)
■
Height of the needle guard (rear)
When the needle is at the bottom of its stroke, line B on
needle guard (rear) A should be aligned with the center
of the needle's eye.
■
Front-to-back position of the needle guard (rear)
When the point of the looper has reached the center of
the right needle, adjust the needle guard (rear) so that
there is a clearance of 0~0.05mm between the needle
and the looper. The same adjustment should be made
on other double chainstitch machines.
These adjustments are made by loosening screws C and
D. The clearance between the left needle and the
needle guard (rear) should be approximately 0.2mm.
6
66
6-
--
-2 Position of the needle g
2 Position of the needle g2 Position of the needle g
2 Position of the needle guard (rear) (004U)
uard (rear) (004U)uard (rear) (004U)
uard (rear) (004U)
■
Height of the needle guard (rear)
When the needle is at the bottom of its stroke, line B on
needle guard (rear) A should be aligned with the center
of the needle's eye.
■
Front-to-back position of the needle guard (rear)
When the point of the looper has reached the center of
the needle, adjust the needle guard (rear) so that there
is a clearance of 0~0.05mm between the needle and the
looper.
< Note >
Adjustments is made by loosening screws C and D.

11
6
66
6-
--
-3 Position of the needle guard (front) (2
3 Position of the needle guard (front) (23 Position of the needle guard (front) (2
3 Position of the needle guard (front) (2-
--
-3U)
3U)3U)
3U)
When the point of the looper has reached the center
of the left needle, there should be a clearance of
0~0.03mm between the left needle and needle guard
(front) E. Adjustment is made by loosening screw
F.
【7】FEED DOGS & STITCH LENGTH
7
77
7-
--
-1 Feed dog height & tilt
1 Feed dog height & tilt1 Feed dog height & tilt
1 Feed dog height & tilt
■Height
When the feed dog is at the top of this stroke, the
feed dog teeth should be parallel with and
1.0~1.2mm above the top surface of the needle plate.
To make this adjustment, loosen screw A and move
the feed dog up or down.
■Tilt
When the feed dog is at the top of this stroke, the
feed dog should be parallel with the top surface of
the needle plate. To make this adjustment, loosen
screws D and move shaft E.
If the fabric to be used is thick and soft, install the
feed dogs slightly higher than standard to feed the
fabric smoothly.

12
7
77
7-
--
-2 Feed dog left
2 Feed dog left2 Feed dog left
2 Feed dog left-
--
-to
toto
to-
--
-right position
right positionright position
right position
The feed dog should be centered left to right.
Adjustment is made by loosening screw B.
7
77
7-
--
-3 Feed dog front
3 Feed dog front3 Feed dog front
3 Feed dog front-
--
-to
toto
to-
--
-back position
back positionback position
back position
The feed dog should be centered front to back.
The feed dog should not touch the needle plate.
Fine adjustment is made by tightening screw G and
turning front-to-back adjusting eccentric F
7
77
7-
--
-4 Stitch length
4 Stitch length4 Stitch length
4 Stitch length
The stitch length is adjustable from 1.4 to4.5mm.
The following table shows the number of stitches
within 1 inch (25.4mm) according to the stitch
length.
Stitch length
(mm) No. of stitches (within 1")
4.5 5.5
4.0 6.5
3.0 8
2.0 12
1.0 18
■
To change the stitch length
Turn adjusting knob A or position lever B as
required. The readings show the stitch length.
■
On the DX Series, the feeding amount can be
changed mechanically up to 4.5mm.
To achieve a feeding amount of 4.5mm, loosen screw
F on the adjusting knob and release the stop
position by moving stop pin G. Adjust while
checking the front or back clearance so that the
needle plate will not touch the feed dog.
< Note >
When turning adjusting knob A or positioning lever B,
loosen screw C. Since this machine has a single
feeding system, differential feed is unavailable.
To change the stitch length, be sure to turn off the
power.

13
【8】PRESSER FOOT
8
88
8-
--
-1 Presser foot pressure
1 Presser foot pressure1 Presser foot pressure
1 Presser foot pressure
The presser foot pressure should be as light as
possible, yet be sufficient to feed the fabric and
produce uniform stitches.
To increase the presser foot pressure, turn the
adjusting knob clockwise.
8
88
8-
--
-2 Position of the presser foot & foot lift
2 Position of the presser foot & foot lift2 Position of the presser foot & foot lift
2 Position of the presser foot & foot lift
Fit the presser foot onto the presser bar so that the
needle can drop correctly to the center of the presser
foot needle drop hole.
■
Position of the presser foot
Loosen screw A. Adjust by moving the presser foot
left or right while checking to make sure the needle
drops correctly to the center of the presser foot
needle drop hole.
■
Foot lift
The presser foot should be 8mm above the top
surface of the needle plate.
Set stopper B at the required position.
Fasten the presser foot lift lever with nut C so that
the lever cannot be lowered.

14
【9】STITCH FORMATION
9
99
9-
--
-1 Position of the needle thread guides
1 Position of the needle thread guides1 Position of the needle thread guides
1 Position of the needle thread guides
The distance from the center of the eyelet of the needle
thread guide to that of the set screw should be
approximately 25mm (see the illustration).
Adjust the height of the thread guides by loosening
screws A and moving thread eyelet B up or down (refer
to the distances shown in the illustration).
If the stitch formation cannot be changed extremely by
adjusting the height of the thread guides because of the
thread to be used, unravel the thread after test sewing
and adjust the height of the thread guides while
checking the tension of the needle thread.
9
99
9-
--
-2 Position of the thread guide on the needle thread take
2 Position of the thread guide on the needle thread take2 Position of the thread guide on the needle thread take
2 Position of the thread guide on the needle thread take-
--
-up
upup
up
When the needle bar is at the bottom of its stroke,
needle thread take-up bracket a should be level and
the distance from the center of the screw B to the
thread guide of needle thread take-up A should be
55mm.
To make this adjustment, loosen screws B and C.
To tighten the needle thread, move needle thread
take-up to Y. To loosen the needle thread, move
needle thread take-up to X.
9
99
9-
--
-3 Timing of the needle thread
3 Timing of the needle thread3 Timing of the needle thread
3 Timing of the needle thread take
taketake
take-
--
-up
upup
up
The timing of the needle thread take-up in relation to
the up-and-down movement of the needles can be
adjusted. This timing is factory-set to synchronize
with the up-and-down movement of the needle bar.
< Note >
The rod ball is factory-set at 5.5mm from the rear end of
the shaft. To make the needle thread loop small, move
the rod ball to the front.
To make the needle thread loop large, move the rod ball
to the back. Remove the rubber top plug.
Loosen the screw of (A) with a 5mm wrench.
Then move the rod ball to the front or back.

15
9
99
9-
--
-4 Position of the thread support
4 Position of the thread support4 Position of the thread support
4 Position of the thread support
When the needle bar is at the bottom of its stroke, the
top surface of needle thread support B should be level
with the centers of the eyes on needle bar thread eyelet
A, and A should be parallel with B.
Height adjustment of needle thread support B is made
by loosening screw C and moving needle thread
support B up or down. Moving it up tightens the
needle thread.
Moving it down loosens the needle thread.
■
For cotton threads (less stretchable)
Set the top surface of the needle thread support 2.0mm
below the centers of the eyes on needle bar thread
eyelet A or do not use the needle thread support. (Loosen screw C and lower the needle
thread support.)
■
For woolly threads (stretchable)
Set the needle thread support as high as possible.
9
99
9-
--
-5 Adjusting the lo
5 Adjusting the lo5 Adjusting the lo
5 Adjusting the looper thread take
oper thread takeoper thread take
oper thread take-
--
-up
upup
up
When the point of the left needle has reached
approximately half of the looper blade from the top of
its stoke, the looper thread should be removed from the
highest point A on the looper thread take-up.
Adjustment is made by loosening screw B.
9
99
9-
--
-6 Adjusting the amount of the looper thread to be supplied
6 Adjusting the amount of the looper thread to be supplied6 Adjusting the amount of the looper thread to be supplied
6 Adjusting the amount of the looper thread to be supplied
To increase the amount, increase clearance C.
To decrease the amount, decrease clearance C.
9
99
9-
--
-7 Removing the needle plate
7 Removing the needle plate7 Removing the needle plate
7 Removing the needle plate
To thread the looper and/or adjust the looper, the
needle plate can be removed with the needle plate
mounting base.
1. Remove the presser foot.
2. Open side cover B.
3. Press the tongue of needle plate stopper A toward
the back side of the machine.
4. Raise the needle plate slightly together with
needle plate mounting base C.
5. Remove the needle plate by shifting it backward.

16
【10】ADJUSTING THE KNIFE DEVICE
10
1010
10-
--
-1 Adjusting the cutting width
1 Adjusting the cutting width1 Adjusting the cutting width
1 Adjusting the cutting width
Loosen screw D on the lower knife holder. Adjust the cutting width as required by
moving the upper and lower knife holders simultaneously to the left or right.
Then tighten screw D.
10
1010
10-
--
-2 Disassembling/reassembling the lower knife
2 Disassembling/reassembling the lower knife2 Disassembling/reassembling the lower knife
2 Disassembling/reassembling the lower knife
■
To disassemble the lower knife
1. Open the front cover.
2. Loosen screws G on the collar (left).
3. Press upper knife holder C to the left to create clearance between the upper and lower
knives.
4. Tighten screws G temporarily.
5. Loosen screw B that secures the lower knife. Then pull lower knife A down.
■
To reassemble the lower knife
1. Set the cutting edge of lower knife A flush with the top surface of the needle plate.
Then tighten screw B.
2. Loosen screws G on the collar (left) that was tightened temporarily. (The upper
lower knives are overlapped by the spring pressure.)
3. Place a thread between the upper and lower knives.
Check for the cutting action by turning the machine pulley by hand.
4. Bring the upper knife to the top of its stroke. Tighten screws G on the collar (left).
5. Check for the cutting action again.
10
1010
10-
--
-3 Disassembling/reassembling the upper knife
3 Disassembling/reassembling the upper knife3 Disassembling/reassembling the upper knife
3 Disassembling/reassembling the upper knife
1. Loosen screw K on the upper knife lever. Turn upper knife holder C slightly
upward.
Tighten screw K temporarily with screw H for the upper knife in sight.
2. Loosen screw H for the upper knife. Remove upper knife J.
3. Install upper knife J with screw H with upper knife J fit onto the key groove on upper
knife holder C.
< Note >
Torque screw D to 10 to 15Kgf. cm. Do not tighten it excessively.
Put a small amount of oil to oil holes E and F occasionally.

17
10
1010
10-
--
-4 Overlap of the upper and lower knives
4 Overlap of the upper and lower knives4 Overlap of the upper and lower knives
4 Overlap of the upper and lower knives
When upper knife J is at the bottom of its stroke,
adjust the overlap of the upper and lower knives as
shown in the illustration. To increase the overlap,
loosen screw K on the upper knife lever and move
the upper knife in the direction of arrow X.
To decrease the overlap, move the upper knife in the
direction of arrow Y. When the correct overlap is
achieved, tighten screw K.
10
1010
10-
--
-5 Adjusting the stroke of the upper knife
5 Adjusting the stroke of the upper knife5 Adjusting the stroke of the upper knife
5 Adjusting the stroke of the upper knife
Set the stroke of the upper knife at approximately
8mm. To change the stroke, loosen nut L on the
upper knife adjusting lever pin.
■
To decrease the stroke, move lever pin M in the
direction of Y.
■
To increase the stroke, move lever pin M in the
direction of X.
After the adjustment, tighten nut L securely.
Adjustment of the stroke will change the overlap of
the upper and lower knives.
Be sure to achieve the correct overlap by referring to
10-4.
10
1010
10-
--
-6 Resharpening the knives
6 Resharpening the knives6 Resharpening the knives
6 Resharpening the knives
Since the upper knife is made of a superalloy, there
is no need to resharpen it about one year.
If cutting does not occur, resharpen the lower knife.