Related Manuals for SunStar KM-341BL
Summary of Contents for SunStar KM-341BL
- Page 1 User’s Manual KM-341BL High-speed 1-Needle Lock Stitch Upper/Lower Feed Sewing Machine...
- Page 2 1. Thank you for purchasing our product. Based on the rich expertise and experience accumulated in industrial sewing machine production, SUNSTAR will manufacture industrial sewing machines, which deliver more diverse functions, high performance, powerful operation, enhanced durability, and more sophisticated design to meet a number of user’s needs.
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Page 3: Table Of Contents
Contents 1. Machine Safety Rules ..........................4 1-1. Transportation .............................. 4 1-2. Installation ..............................4 1-3. Repair ................................4 1-4. Operation ..............................5 1-5. Safety Devices ............................. 5 1-6. Location of Warning Marks ........................6 1-7. Warning Messages ............................6 2. -
Page 4: Machine Safety Rules
The machine specifications and parts should not be altered without prior consultation with Caution Sunstar. This may pose danger to operation. When repairing, only the original spare parts produced by Sunstar should be used for replacement. Put all safety covers back on the machine after repairing is complete. -
Page 5: Safety Devices
1-4) Operation KM-341BL Series is an industrial sewing machine designed to conduct pattern sewing using fabrics and other similar materials. During operation, the following instructions should be kept in mind: Read through this manual carefully and completely before operating the machine. -
Page 6: Location Of Warning Marks
1-6) Location of Caution marks are attached on the machine for safety. Caution Marks When operating the machine, carefully read the instructions on the mark. Caution 1-7) Warning Messages... -
Page 7: Entire Configuration
Entire Configuration Knee Lifting Pad Power Switch Oil Fan Reverse Lever Face Plate Stitch Dial Top Cover Pulley Oil Window Thread Stand Presser Foot Safety Devices Take-up Cover Belt Cover... -
Page 8: Specifications
Specifications MODEL KM-341BL High-speed 1-Needle Lock Stitch Name Upper/Lower Feed Sewing Machine with Vertical Large Hook DP 17 #23, DB 1 #21 Needle in Use (#20 ~ #24) Needle Stroke 34.7 mm Thread Take-up Stroke 71.5 mm Up/Down Overlap of... -
Page 9: Installation
Installation [ Caution ] Sewing machine installation and wiring work should be conducted by qualified engineers. Since the sewing machine's body weights 50kg or so, at least two persons are needed to install the sewing machine. Do not turn on the power until the installation is completed. If the foot pedal is accidentally stepped, the sewing machine can start operation, providing causes for accidents. -
Page 10: Returning To Original Position
4-4. Returning to Original Position 1) Clear away tools from the table. 2) Hold the face plate with the left hand, while slowly returning the sewing machine back to its original position. [ Fig. 4 ] 4-5. Installation of Head Part Insert the hinge rubber into the table, and insert the oil fan into the middle of the head supporting rubber B as in Fig. -
Page 11: Adjusting Belt Tension
4-7. Adjusting Belt Tension 1) When looking at the sewing machine from the pulley side, it looks like it is spinning in the left side. 2) To adjust the belt tension, press the belt with a finger and when it is pushed down about 15~20 mm, fasten the nut . -
Page 12: Thread Stand
When it is first time to operate the sewing machine or it is reuse of the sewing machine after a long-term storage, please supply oil to the machine. Use original Sunstar lubricant (Lubricant is in the accessory box). A. Installation of Magnet Removing Chips (Iron Powder) Attach the magnet removing chips (iron powder), which is inside the accessory box, to the oil pump inside the bed. -
Page 13: Inserting Bobbin Into Bobbin Case
B. Lubricant Supply to Oil Fan a) Fill lubricant up to “High”. b) Use the oil for Sunstar industrial sewing machine or Shell’s Tellus C10 as lubricant. c) When lubricant reaches “Low”, lubricant should be resupplied until it reaches “High”. -
Page 14: Test Operation (Pedal Operation)
4-13. Test Operation (Pedal Operation) [ Caution ] During operation, do not touch spinning or moving parts or press them with an object. It may cause physical injuries or machine breakdowns. 1) Move the pedal at the B position to see if you can conduct low speed sewing. -
Page 15: Basic Sewing Machine Adjustments
Basic Sewing Machine Adjustments 5-1. Needle Insertion Place the long groove of the needle toward the left. Insert the needle deep into the needle bar hole and fasten the needle fixing screw . [ Fig. 16 ] 5-2. Adjusting Needle and Hook Timing 1) Needle Bar Lifting Turn the pulley to place the needle 2.24mm above the lowest point. -
Page 16: Adjusting Oil Supply To Hook
5-3. Adjusting Oil Supply to Hook Turn the oil volume adjusting screw , which is inserted in the lower shaft front bushing, clockwise( ). It will release more oil. Turn the screw counter-clockwise( ) and it will release less oil. More Less [ Fig. -
Page 17: Adjusting Thread Tension
5-5. Adjusting Thread Tension Weaker Stronger [ Fig. 21 ] 1) Adjust the lower thread tension by slightly turning the tension adjusting screw , so that when the end of thread is picked up by hand, the thread does not get loose. The average tension of pulling the thread out of the bobbin case is 30~50g. -
Page 18: Placing Upper Thread
5-7. Placing Upper Thread [ Fig. 23 ] 1) Move the thread take-up to the highest position. 2) Insert the thread into the needle from left to right. 5-8. Adjusting Pressure of Pressor Foot Loosen the fixing nut for the pressure adjusting screw and turn the pressure adjusting screw left or right to make the sewing fabric held by the pressor foot. -
Page 19: Adjusting Height Of Feed Dog
5-10. Adjusting Height of Feed Dog When the stitch length is maximum and the feed dog is above the needle plate, the maximum height of the feed dog is 1~1.2mm. Loosen the screw and move the feed lift shaft crank left or right to adjust the height of the feed dog. - Page 20 2) Longitudinal Operation Range of Main and Auxiliary Presser Feet [ Fig. 28 ] The longitudinal operation range of the main presser foot and the auxiliary presser foot range from 2 to 5mm. Loosen the nut according to the sewing fabric and adjust the presser foot longitudinal movement shaft up or down.
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Page 21: Errors And Troubleshooting
Errors and Troubleshooting 1) Troubleshooting Error Check Cause Handling Measure Direction and height of The direction of inserting a needle is Insert the needle in a right direction needle insertion wrong. and push it into the deepest position. Needle A needle is crooked. Replace the needle. -
Page 22: Table Drawing
Table Drawing...
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