LK3-B438E INSTRUCTION MANUAL Please read this manual before using the machine. Please keep this manual within easy reach for quick reference.
Thank you very much for buying a BROTHER sewing machine. Before using your new machine, please read the safety instructions below and the explanations given in the instruction manual. With industrial sewing machines, it is normal to carry out work while positioned directly in front of moving parts such as the needle and thread take-up lever, and consequently there is always a danger of injury that can be caused by these parts.
2. Notes on safety DANGER Wait at least 5 minutes after turning off the power switch and disconnecting the power cord from the wall outlet before opening the face plate of the control box. Touching areas where high voltages are present can result in severe injury. CAUTION Environmental requirements Use the sewing machine in an area which is free from sources of strong electrical noise such as highfrequency welders. Sources of strong electrical noise may cause problems with correct operation.
CAUTION Sewing This sewing machine should only be used by operators who have received the necessary training in safe use beforehand. If using a work table which has casters, the casters should be secured in such a way so that they cannot move. The sewing machine should not be used for any applications other than sewing. Attach all safety devices before using the sewing machine. If the machine is used without these devices attached, injury may result.
3. Warning labels The following warning labels appear on the sewing machine. Please follow the instructions on the labels at all times when using the machine. If the labels have been removed or are difficult to read, please contact your nearest Brother dealer. 1 Hazardous voltage will cause injury. Hochspannung verletzungsgefahr! Turn off main switch and wait 5 minutes before opening this cover.
CONTENTS 1. NAME OF EACH PART ............................... 01 2. SPECIFICATIONS ......................................... 02 2-1. 2-2. Specifications ....................................... Program list .......................................... 2 3 3. INSTALLATION ............................................. 06 3-1. 3-2. 3-3. 3-4. 3-5. 3-6. 3-7. 3-8. 3-9. 3-10. 3-11. 3-12. 3-13. 3-14. 3-15. 3-16. 3-17. 3-18. 3-19. 3-20. Power table ........................................... Installing the motor .
1 . NAME OF EACH PART 1.
2 . SPECIFICATIONS 2 . SPECIFICATIONS 2-1 . Specifications Stitch formation Single needle lock stitch Maximum sewing speed 2,500rpm Maximum pattern size 0 - 6.4 × 0 - 6.4 mm TQ × 1#12 Needle Dimensions of buttons that can be sewn Outer diameter of button 8 - 30 mm (Use the optional button clamp B for diameters of 20 mm or greater.) Space between the button holes 0 - 6.4 mm Button clamp height 13 mm max.
2 . SPECIFICATIONS 2-2 . Program list Sewing patterns are limited as shown in the table below. (Any program is available as long as the needle drops down in the hole of the button.) Program No. Sewing pattern No. of threads No. of crossover stitches No.
2 . SPECIFICATIONS No. of threads No. of crossover stitches 16 6-5 1 19 17 8-7 1 23 30 10-9 1 27 18 6-6 1 20 19 8-8 1 24 Program No. No. of button holes Sewing pattern No. of Standard Standard stitches sewing length X sewing width Y 31 10-10 1 28 45 12-12 1 32 6-6 0 26 8-8 0 30 10-10 0 34 6-6 1 20 10-10 1 28 6-6 0 26 35 10-10 0 34 46 6-6 1 20 47 8-8 1 24 20 32 33 21 34 *3 *3 *3 *2 *2 *2*3 22 *2*3 3.4mm 3.4mm 2.4mm 3.4mm 3.4mm 3.
2 . SPECIFICATIONS ■ The following programs require the solenoid thread wiper (OP). No. of threads No. of crossover stitches 36 6-6 0 26 37 8-8 0 30 38 10-10 0 34 39 12-12 0 38 6-6 0 26 41 8-8 0 30 42 10-10 0 34 6-6 0 26 No. of Program No. button holes 4 40 43 44 Sewing pattern * * 10-10 0 * 2 Do not use the button lifter spring. 5 LK3-B438E Mark II No. of Standard Standard stitches sewing length X sewing width Y 34 3.4mm 3.4mm 2.4mm 3.
3. INSTALLATION 3. INSTALLATION CAUTION Machine installation should only be carried out by a qualified technician. All cords should be secured at least 25 mm away from any moving parts. Furthermore, do not excessively bend the cable or secure it too firmly staples, otherwise there is the danger that fire or electric shocks could occur. Contact your Brother dealer or a qualified electrician for any electrical work that may need to be done. The sewing machine head weighs more than 47 kg.
3. INSTALLATION 3-2 . Installing the motor Install the motor u to the work table with the four accessory bolts q, cushions w, cushion collars e, flat washers r, spring washers t and nuts y. At that time, fix by setting bolts q a little to the right of oval hole on motor. q NOTE: Tighten the nuts y so that the clearance between the table and the cushion collars e is approximately 1 mm. w e q r t y u Table 1mm e 3-3 .
3. INSTALLATION 3-4 . Installing the control box !0 r Table t Cushions yCushion collars t y 3mm u i o !1 u Rubber collers i Flat washers o Nuts !2 w q e !3 1. Remove the 12 screws q, and then open the covers (panel mounting assembly w and main P.C. board mounting plate e). NOTE: When opening the cover, hold it securely so that it does not fall down. 2.
3. INSTALLATION 3-5. Installing the rubber cushions Install the rubber cushions q with the nails w. w q 3-6 . Installing the oil pan q w 1. Insert the tabs of the oil pan w into the holes for the cushions q, and then secure it in place with the five nails e so that the oil pan w is not at an angle. 2. While pushing the oil pan w down from above, screw in the oil container r. e r 3-7 .
3. INSTALLATION 3-8 . Installing the machine head y u 66 17 13 w q e r t 1. Insert the head hinges q into the machine head so that they are parallel, and then secure them with the two set screws w. 2. Place the machine head gently on top of the rubber cushions e and cushions r. NOTE: Pull the cords t out as shown in the illustration above in order to prevent them from being clamped by the machine head. 3. Install the hinge presser y with the two screws u. 3-9 .
3. INSTALLATION 3-11 . Installing the operation panel The operation panel can be installed to either the top or bottom of the work table. Top of work table Bottom of work table q r r q e w e t Table w Table t 1. Install the rear frame q to the work table (top or bottom) with the four wood screws w. 2. Install the front frame e to the rear frame q with the four screws r. * The vertical orientation of the front frame e is the same whether it is installed to the top or the bottom of the work table.
3. INSTALLATION 3-13 . Connecting the cords q !2 !3 t o P8 P1 w P2 P3 q !1 r !0 P4 P5 P6 P7 P11 Machine head connectors Connection location u y i e Connection location on circuit board No.
3. INSTALLATION 3-14 . Installing the V-belt 1. Gently tilt back the machine head, and then place the V-belt q into the V grooves on the machine head pulley w and the motor pulley e. w NOTE: After tilting back the machine head, do not push the face plate side or the pulley side from above. 2. Gently return the machine head to its original position. * Be careful not to clamp the cords at this time. 3.
3. INSTALLATION 3-15 . Installing the belt cover w q e t u r y 1. Loosen the two screws w of the upper cover q and the two screws r of bed cover Le. 2. Insert the belt cover t in the direction of the arrow, and then secure it with the two screws w, the two screws r and the screw y. * When tilting back the machine head, loosen the screws w and r, remove the screw y and then remove the belt cover t first. 3. Attach the rubber plug u to the belt cover. 3-16.
3. INSTALLATION 3-17 . Installing the motor cover 1. Install the motor cover q to the motor back cover w with the screws e and the flat washers r. 2. Pass the motor shaft through the notch in the motor back cover w, and then tighten the screws y and the washers u so that the clearance between the motor pulley t and the motor cover q is uniform. q w r e u y t 3-18 . Installing the spool stand 3-19 .
4 . LUBRICATION 4. LUBRICATION CAUTION Turn off the power switch before starting lubricating, otherwise the machine may operate if the foot switch is depressed by mistake, which could result in injury. Be sure to wear protective goggles and gloves when handling the lubricating oil and grease, so that they do not get into your eyes or onto your skin, otherwise inflammation can result. Furthermore, do not drink the oil or eat the grease under any circumstances, as they can cause vomiting and diarrhoea.
5 . OPERATION 5 . OPERATION 5-1 . Name and function of each operation panel item B430E u q P POWER w RESET i o Y-SCALE P1 P2 P3 P4 SPEED r TEST PROGRAM NO. X-SCALE !0 e Series !4 !1 COUNTER t BOBBIN.WIND SELECT y q POWER indicator .................. Illuminates when the power switch has been turned on. w RESET switch ...................... . Press this switch to reset the machine when an error occurs. e TEST switch .........................
5 . OPERATION B430E P POWER RESET i BOBBIN.WIND PROGRAM NO. P1 P2 !3 X-SCALE o Y-SCALE !0 TEST Series P3 P4 SPEED !4 !1 COUNTER SELECT !2 y i X-SCALE indicator ................ Illuminates when the SELECT switch y is pressed to shown the X-scale setting. o Y-SCALE indicator ................ Illuminates when the SELECT switch y is pressed to shown the Y-scale setting. !0 SPEED indicator ................... Illuminates when the SELECT switch y is pressed to shown the speed setting.
5 . OPERATION 5-2 . Operating procedure Preparation Turn on the power switch. (The POWER indicator q will illuminate and the pro gram number will flash in the display window !4 .) Factory default Variable range Program No. 00 * 01 - 49 X-scale (%) 100 20 - 200 Y-scale (%) 100 20 - 200 Speed (rpm) 2000 1,000 - 2,500 * For checking the origin points for X and Y feed 5-2-1 . Setting the program number Determine the appropriate program from the program list which is given on pp. 3 - 5.
6. CHECKING THE SEWING PATTERN 6. CHECKING THE SEWING PATTERN ■ When checking by operating only the feed mechanism 1. Turn on the power switch. (The POWER indicator will illuminate and the program number will flash in the display window.) 2. Set the X-scale and Y-scale in accordance with the hole pitch of the buttons being used. (Refer to “5-2-2. Setting the X-scale and Y-scale”.) 3. Set the button. (Refer to “7-7. Inserting the button”.) 4. Press the TEST switch. (The TEST indicator will illuminate.
7. CORRECT USE 7. CORRECT USE 7-1 . Selecting the needle and thread Needle Refer to the table at right for details on which needle and thread to select. NOTE: Use buttons which have a hole diameter that is greater than the value given in the table, to ensure that the needle does not touch the button. Thread TQ × 1 #11 TQ × 1 #12 TQ × 1 #14 #60 #50 Button hole diameter 1.5mm or greater 1.6mm or greater 1.7mm or greater 7-2 .
7. CORRECT USE 7-4 . Winding the lower thread CAUTION Do not touch or place anything against any of the moving parts while winding the lower thread, otherwise personal injury or damage to the machine may result. 1. Place the bobbin all the way onto the shaft. 2. Thread the thread as shown in the illustration at right, wind the thread around the bobbin several times in the direction of the arrow, and then press the bobbin presser q. q 3. Turn on the power switch.
7. CORRECT USE 7-5. Replacing the bobbin case and threading the thread CAUTION Turn off the power switch before removing and replacing the bobbin case, otherwise the machine may operate if the foot switch is depressed by mistake and serious injury could result. w r e 30mm q Pull the shuttle race cover q toward Insert a new bobbin into the bobbin Pass the thread through the lever you to open it.
7. CORRECT USE 7-6-3 . Thread take-up spring height Lower 7-6-4. Thread take-up spring tension Higher q q Loosen the set screw q and turn the tensioner body to adjust the thread take-up spring height. Stronger Weaker Turn the tension stud q with a screwdriver. 7-6-5. Adjusting arm thread guide R Become greater A Become less q The standard position of arm thread guide R q is when the screw w is aligned with mark A. To adjust the position, loosen the screw w and then move arm thread guide Rq.
7. CORRECT USE 7-7. Inserting the button 1. Press the cam plate q to open the button holder w. 2. Insert the button, making sure that the button is facing the directing shown in the illustration, then release the cam plate q. q w 7-8. Adjusting the button holder 0.5 - 1.0mm q w 1. Insert the button in the button holder. Confirm that the button is securely held by the holder. 2. Loosen the set screw q, while the button is held by the holder.
8. SEWING 8. SEWING CAUTION Turn off the power switch at the following times, otherwise the machine may operate if the foot switch is depressed by mistake, which could result in injury. • Threading • When replacing the needle • When not using the machine and when leaving the machine unattended. Do not touch any of the moving parts or press any objects against the machine while sewing, as this may result in personal injury or damage to the machine. Before starting sewing ......
9 . MAINTENANCE AND INSPECTION 9 . MAINTENANCE AND INSPECTION CAUTION Turn off the power switch before carrying out cleaning, otherwise the machine may operate if the foot switch is pressed by mistake, which could result in injury. Be sure to wear protective goggles and gloves when handling the lubricating oil and grease, so that they do not get into your eyes or onto your skin, otherwise inflammation can result.
9 . MAINTENANCE AND INSPECTION 9-2. Lubrication NOTE1: NOTE2: NOTE3: NOTE4: Fill the machine with oil when the oil level is down to about one-third full in the oil sight glass. If oil is not added and the oil drops below this level, there is the danger that the machine may seize during operation. Be sure to let the machine operate for a while after adding the oil.
9 . MAINTENANCE AND INSPECTION 9-3 . Draining the oil 1. Remove and empty the waste oil container q whenever it is full. 2. After emptying the waste oil container q, screw it back into its original position. q 9-4 . Cleaning the control box air inlet port Use a vacuum cleaner to clean the filter in the air inlet port w of the control box q at least once a month. w q * If the machine is used while the air inlet port is blocked, the inside of the control box will overheat.
10 . STANDARD ADJUSTMENTS 10 . STANDARD ADJUSTMENTS CAUTION Maintenance and inspection of the sewing machine should only be carried out by a qualified technician. Hold the machine head with both hands when tilting it back or returning it to its original position. Furthermore, after tilting back the machine head, do not push the face plate side or the pulley side from above, as this could cause the machine head to topple over, which may result in personal injury or damage to the machine.
10 . STANDARD ADJUSTMENTS 10-3 . Adjusting the driver needle guard Needle center line Tip q e w Turn the machine pulley to align the tip of the rotary hook with the needle center line. Then loosen the set screw w and turn the eccentric shaft e to adjust so that the driver needle guard q contacts the needle. If the needle contact pressure is too great, skipped stitches may occur.
10 . STANDARD ADJUSTMENTS 10-6.Adjusting the thread take-up amount q Thread take-up amount (stroke) e Become less Become greater w q r At the time of shipment from the factory, the thread take-up amount (stroke) of the thread take-up lever q is set to the standard setting of 5 mm. You may need to adjust this setting depending on the sewing conditions to prevent the thread from pulling out at the sewing start. [Adjustment method] Loosen the screw w and move the stopper (3.
10 . STANDARD ADJUSTMENTS 10-7-1 . Replacing the movable knife and fixed knife q w y e t y r i u 1. Open the large shuttle hook cover, remove the screws q and w, and then remove the feed plate e. 2. Remove the two screws r and the two screws t, and then remove the needle plate y. 3. Remove the thread trimmer connecting rod u from the connecting rod lever pin i. !2 o !3 !1 !0 0.5mm !0 4. Remove the movable knife o and replace it with a new one.
10 . STANDARD ADJUSTMENTS 10-7-2. Adjusting the engagement of the movable knife and fixed knife Fig. 1 B A Movable knife D C Cutting edge Fix knife Cutting edge Cutting edge Cutting edge A. After the movable knife and fixed knife are properly engaged, tighten the screw as shown in Fig.1. B. Turn the movable knife (in the direction of the arrow) while the screw is still tightened. C. Loosen the screw. D. Turn the movable knife (in the direction of the arrow) while the screw is still loosened.
10 . STANDARD ADJUSTMENTS 10-9. Adjusting the holding pressure Loosen the adjusting nut q and turn the adjusting nut w to the point where it is just tight enough that the material will not slip out of place when it is slightly pulled (keep pressure as slight as possible). w q 10-10. Adjusting the position of the button holder 1. Loosen the two hexagonal bolts q and adjust the button holder body w by moving it. 2. Check that the needle will go through the button hole with no contact. (Refer to “6.
10 . STANDARD ADJUSTMENTS 10-11. Adjusting the needle up stop position The needle up stop position is adjusted so that the index mark w on the machine pulley q is inside the mark r on the belt cover e. If adjustment is necessary, loosen the screw t at the “U” mark of the machine pulley q and adjust the position of the machine pulley q. The machine pulley q stops later if it is turned clockwise, and it stops earlier if it is turned counterclockwise.
10 . STANDARD ADJUSTMENTS 10-13. Checking the input sensor and DIP switch input B430E POWER q P Series PROGRAM NO. P1 P2 P3 P4 X-SCALE e RESET Y-SCALE SPEED w TEST BOBBIN.WIND COUNTER r SELECT t 1. When the X-SCALE indicator q is illuminated and the RESET switch e is pressed while the TEST switch w is being pressed, the state of the X home position signal will appear on the display window r. · When sensor is ON · When sensor is OFF 2.
10 . STANDARD ADJUSTMENTS 10-14. Checking the input voltage B430E P Series PROGRAM NO. POWER P1 P2 P3 P4 X-SCALE r w RESET Y-SCALE SPEED e TEST t COUNTER BOBBIN.WIND SELECT q Specifications Display 200V [090 - 110] 220V [100 - 120] 230V [105 - 125] 100V 380V 400V 415V [100 - 120] Notes “100” is displayed when the input voltage is 200 V. “110” is displayed when the input voltage is 100V (for 100-V spece.), 380V (for 380-V spece.), 400V (for 400-V spece.
10 . STANDARD ADJUSTMENTS 10-16 . Moving stitch patterns · Programs which have already been programmed can be moved up, down and to the left and right. (However, such patterns will be reset if the power supply is turned off or the program number is changed.) · The feed position can be set to the any position desired. B430E w P POWER r t e RESET Series PROGRAM NO. u P1 P2 P3 P4 X-SCALE i Y-SCALE SPEED TEST BOBBIN.WIND COUNTER y SELECT q o 1.
11 . USING THE COUNTERS 11. USING THE COUNTERS 11-1 . Using the bobbin thread counter If you use the bobbin thread counter to set the number of articles which can be sewn with the amount of bobbin thread available, you can stop the bobbin thread running out in the middle of sewing a pattern. 1. Press the SELECT switch q until the COUNTER indicator w illuminates. 2. While pressing the TEST switch e, press the RESET switch r.
12 . CHANGING FUNCTIONS USING THE DIP SWITCHES 12. CHANGING FUNCTIONS USING THE DIP SWITCHES 12-1. Operation panel DIP switches The operation panel DIP switches q are used to change functions which might need to be changed depending on the sewing conditions. NOTE: Always turn off the power before setting the DIP switches. The functions shown in the table below can be changed by means of these DIP switches. * All DIP switches are set to OFF at the time of shipment.
12 . CHANGING FUNCTIONS USING THE DIP SWITCHES 12-3 . DIP switches inside the control box DANGER Wait at least 5 minutes after turning off the power switch and disconnecting the power cord from the wall outlet before opening the face plate of the control box. Touching areas where high voltages are present can result in severe injury. The DIP switches q inside the control box are used to change functions which do not often need to be changed once they have been set.
12 . CHANGING FUNCTIONS USING THE DIP SWITCHES 12-4. Using user programs User program ... It can store sixteen different programs which can include details such as the program number, X scale, Y scale and sewing speed. If you are sewing certain patterns over and aver again, it is useful to record the settings for these patterns into a user program. Recording a user program 1. Turn off the power switch and then set DIP switch A-3 of the DIP switches q to ON. B430E r POWER 2. Turn on the power switch.
12 . CHANGING FUNCTIONS USING THE DIP SWITCHES Using a user program 1. Press the DISPLAY SET switches !0 to select the speed program number for the user program that you would like to use. *The user program numbers P1 to P4 can also be selected using the user program switches !1. 2. Depress the foot switch to the second step. 3. Check the sewing pattern (see P.20), and then sew the pattern selected. Clearing the user programs 1. Switch the machine to recording mode by the procedure in steps 2.
13. CHANGING SPECIAL FUNCTIONS USING THE MEMORY SWITCHES 13. CHANGING SPECIAL FUNCTIONS USING THE MEMORY SWITCHES The functions of the switches on the operation panel q can be changed to carry out special functions. NOTE: After changing the memory switch settings, press the power switch to turn the power off and then back on again. The memory switches “00 - 2F” (except “08”) are set to OFF at the time of shipment. 1. Turn on the power switch. 2. While pressing the TEST switch w, press the BOBBIN.
13. CHANGING SPECIAL FUNCTIONS USING THE MEMORY SWITCHES ■ Memory switches 10 - 1F Motion when set to ON Switch memo-10 The optional emergency stop switch can be used. memo-11 - memo-13 — memo-14 Solenoid wiper can be used (available as an option). memo-15 — memo-16 Needle cooler output is enabled. (Needle cooler is available by special order.) memo-17 Thread take-up device is not operated at the sewing end. memo-18 Thread take-up device operates one stitch before the sewing end.
13. CHANGING SPECIAL FUNCTIONS USING THE MEMORY SWITCHES 13-1. Using the cycle sewing function What is the cycle sewing function? The cycle sewing function lets you program up to four patterns for cycle sewing of patterns in a predeter mined order. Recording a cycle sewing program q 1. Set DIP switch q-3 to ON, and then record the patterns which you would like to use for cycle sewing. (Refer to “12-4. Using user programs”.
13. CHANGING SPECIAL FUNCTIONS USING THE MEMORY SWITCHES Using a cycle sewing program 1. When “c1-1” is flashing in the display window !0 , press the foot switch to the second step. 2. Start sewing. 3. “c1-1”, “c1-2”, “c1-3” are sewn in order for each article, and when the last-recorded pattern has been sewn, the display returns to “c1-1”. * If you press one of the DISPLAY SET switches !1 when “c1-*” is displayed, you can return to the previous stitch pattern or skip a stitch pattern.
14. TABLE OF ERROR CODES 14. TABLE OF ERROR CODES DANGER Wait at least 5 minutes after turning off the power switch and disconnecting the power cord from the wall outlet before opening the face plate of the control box. Touching areas where high voltages are present can result in severe injury. If a malfunction should occur with the sewing machine, a buzzer will sound and an error code will appear in the display window. Follow the remedy procedure to eliminate the cause of the problem.
14. TABLE OF ERROR CODES Code Cause E-A0 Home position cannot be detected (malfunction of home position sensor), or malfunction of power supply circuit board. Turn off the power and check the connection of home position sensor connector P1. E-b0 You tried to change the program number when DIP switch A-8 was set to ON. Press the RESET switch. Set DIP switch A-8 to OFF before trying to change the program number. E-d0 Heat sink of control circuit board is abnormally hot.
15. GAUGE PARTS LIST 15. GAUGE PARTS LIST • Feed plate S49951-001 S49952-001 S49954-001 1 4.8 1 1 7 11 4.8 7 4.8 11 7 8.4 4.8 1.6 φ12.5 S49953-001 7 1.5 S49950-001(Standard) • Button clamp spacer AR S52075-001 BR S52076-001(Standard) CR S52077-001 DR S52078-001 AL S52071-001 BL S52072-001(Standard) CL S52073-001 DL S52074-001 2.5 2 1.5 3 • Needle hole plate HS S40917-001 HT φ3.6 S40925-001 φ2 φ3.2 HX φ3.2 0.8 φ1.6 51 φ2 S52082-001(Standard) 1.2 φ1.
16. TROUBLESHOOTING 16. TROUBLESHOOTING Problem Cause Check Remedy Page Button clamp lifter amount is too great. Distance between button clamp and top of needle plate Adjust the height of the button clamp to within 17 mm. 34 Presser is contacting thread wiper. Thread wiper standby position Adjust the position of the thread wiper. 36 Button clamp does not drop. Presser lifter link is not moving back. Link return spring is unhooked. Hook the link return spring properly.
16. TROUBLESHOOTING Problem Upper thread breaks. Lower thread breaks. Skipped stitches occur. Cause Check Upper thread tension is too strong. Upper thread tension Adjust the upper thread tension. 23 Needle is installed incorrectly. Needle direction Install the needle so that the groove is facing forward. 21 Thread is too thick for the needle. Thread and needle Use the correct thread for the needle. 21 Thread take-up spring tension and height are incorrect.
16. TROUBLESHOOTING Problem Cause Check Sharpen or replace the fixed knife. Shuttle race thread guide position Adjust the position of the shuttle race thread guide. 31 Needle bar lift amount Adjust the needle bar lift amount. 30 The movable knife does not pick up the thread because of skipped stitches at the sewing end. Skipped stitches at sewing end Refer to “Skipped stitches occur”. Movable knife position is incorrect. Movable knife position Adjust the position of the movable knife.
17. OPTIONAL PARTS 17. OPTIONAL PARTS ■ Two-pedal foot switch ....................................... The presser switch and the start switch have been separated, giving the operator more flexibility to select the best method of working. ■ Two-step foot switch ......................................... This is a pedal-type foot switch. ■ Liquid cooling tank . .......................................... This helps to prevent thread breakages caused by friction when using synthetic threads.
INSTRUCTION MANUAL BROTHER INDUSTRIES,LTD. Printed in Japan NAGOYA,JAPAN 118-V38 S91V38-002 2000.02.
