Why is the thread tightening quality poor on my SunStar SPS/B-1811?
If the thread tightening quality is poor on your SunStar Sewing Machine, it could be due to weak tension of the upper or under thread, or improper timing of the needle and shuttle. You can adjust the tension of the upper sensor or readjust the timing of the needle and shuttle to resolve this issue.
What causes ineffective sense of upper thread on my SunStar SPS/B-1811 Sewing Machine?
If your SunStar Sewing Machine is experiencing ineffective sense of the upper thread, it could be caused by a bad connection between the take-up lever spring and detecting plate, or a bad connection of the wire with the thread sensor plate. Try cleaning up the take-up lever spring and detecting plate, adjusting the tension of the take-up lever spring and connecting condition of detecting plate, or reconnecting the wire with the thread sensor plate.
Why is my SunStar SPS/B-1811 Sewing Machine skipping stitches?
If the SunStar Sewing Machine is skipping stitches, it could be due to several reasons. You may be using a bending needle, an improper sized needle, or the needle may be installed incorrectly. Another cause may be improper timing between the needle and shuttle, a large interval between the needle groove and shuttle point, or excessive tension of the take-up lever spring and stroke. To resolve this, try exchanging the needle, reinstalling the needle, reinstalling the timing for the needle and shuttle, reinstalling the downward point of the needle, or adjusting the tension of the take-up lever spring and stroke.
What to do if the thread keeps cutting on my SunStar SPS/B-1811?
If the thread is being cut on your SunStar Sewing Machine, it could be due to several factors: the thread might be inserted incorrectly, the needle could be installed wrong (height or direction), the needle might be damaged (bent, cracked, or with an abraded tip), the upper or under thread tension might be too high, the take-up lever spring tension and stroke might be excessive, or there could be a crack on the shuttle surface spring's controlling hole. You should insert the thread properly, reinstall the needle, exchange the needle, adjust the tension, adjust the tension and stroke of the take-up lever spring, or exchange the shuttle surface spring.
How to fix a bent needle on my SunStar SPS/B-1811?
If the needle of your SunStar Sewing Machine is bent, it could be due to damage (bending, cracks, abrasion) or wrong installation, or contact with the shuttle. Try exchanging the needle, installing the needle properly, or adjusting the distance between the needle and shuttle.
What causes an error on operation on my SunStar SPS/B-1811?
If your SunStar Sewing Machine is showing an error during operation, it might be caused by a loss of belt tension, a fuse shortage, or deviation from the Y and Y limit of the feed bracket. To fix this, adjust the belt tension, exchange the belt, check the fuse shortage of the main shaft drive motor in the controller box, exchange the fuse, or move the feed bracket to its normal position inside the limit switch.
Why is the stopping position bad on my SunStar SPS/B-1811 Sewing Machine?
If the stopping position on your SunStar Sewing Machine is bad, it could be caused by slackness of the main drive belt or a wrong position of the upper shaft sensor plate or photo sensor. Try adjusting the belt tension or adjusting the position of the upper shaft sensor plate, or exchange the photo sensor.
How to resolve mistakes of trimming on SunStar SPS/B-1811?
Mistakes in trimming on your SunStar Sewing Machine can occur due to slackness of exchange tension between the moving and fixed mes, groove abrasion on the blades, or a wrong position of the trimming cam. To resolve this, adjust the tension of the fixed mes, exchange the moving and fixed mes, or readjust the position of the trimming cam.
Safety guidelines for transporting the machine.
Requirements for proper machine installation to ensure functionality and prevent issues.
Guidelines for safe and authorized machine repair procedures.
Principles for safe and effective operation of the sewing machine.
Explanation of various safety labels and protective devices on the machine.
Location and meaning of caution marks on the machine for safety.
Details and explanations of various cautionary marks found on the machine.
Identification and labeling of the main parts of the sewing machine.
Detailed view and labeling of components within the machine's control box.
Recommended environmental conditions for optimal machine performance and safety.
Requirements for electrical power supply and protection against electrical hazards.
Instructions for attaching external covers and components to the machine.
Procedure for setting the correct input voltage for the machine.
Instructions on where and how to supply oil to lubricate the machine parts.
Step-by-step guide for correctly installing the needle bar.
Detailed instructions for threading the upper thread through the machine.
Guide on how to properly thread the lower bobbin thread.
Procedure for correctly installing and removing the bobbin case.
Instructions for adjusting the tension of both upper and lower threads.
Steps for winding thread onto the bobbin.
How to adjust the presser foot height for optimal sewing.
Method for safely disposing of used machine oil.
Procedure for adjusting the air pressure for pneumatic components.
Controlling the speed of the upper feed plate's movement.
Instructions for safely tilting or standing the machine for maintenance.
Steps for installing and removing the V-belt on A series models.
Guidelines for handling and using floppy disks with the machine.
Procedure to adjust the vertical position of the needle bar.
Steps for aligning the needle and shuttle for correct stitch formation.
How to adjust the timing and backlash of shaft gears.
Procedure to adjust the spring tension for the shuttle mechanism.
How to adjust the vertical position of the feed plate.
Adjustments related to the presser foot mechanism and its drive.
How to adjust the speed and position of the presser foot lifter cylinder.
Adjusting components related to thread timing and delay.
Procedures for positioning and setting up the machine's wiper.
Instructions for adjusting the thread trimming mechanism components.
How to adjust the tension of the main thread control mechanism.
Procedure for adjusting the upper thread detection system.
How to adjust the hand pulley and its gears for proper function.
Technical specifications for the HS-21 model series.
Setting the initial position of the two-step stroke air cylinder.
Adjusting the middle stop position for the upper feed plate.
Controlling the speed of the upper feed plate's ascent and descent.
Explanation of the pedal switch functions and applications.
Technical specifications for the HS-22 model series.
Adjusting the angle of both right and left upper feed plates.
Setting the initial position of the air cylinder.
Adjusting the middle stop position for the left upper feed plate.
Controlling the speed of the upper feed plate's ascent and descent.
Explanation of the pedal switch functions and applications.
Machine specifications for the GS-20 (21, 22, 23) series.
Instructions for threading the upper thread on GS models.
Technical specifications for the HP(GP) model series.
Procedure for correctly attaching the needle.
Instructions for threading the upper thread on HP/GP models.
Procedure for threading the lower bobbin thread on HP/GP models.
Adjusting the spring tension on the upper side of the shuttle.
Adjusting the moving and fixed knives for thread trimming.
General| Brand | SunStar |
|---|---|
| Model | SPS/B-1811 SERIES |
| Category | Sewing Machine |
| Language | English |
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