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Why is the upper thread not tight on my Brother S-7200B Sewing Machine?
The upper thread might not be tight because the upper thread tension is too weak, or the lower thread tension is too strong. Adjust the upper thread tension or lower thread tension. Also, check if the needle and feed timing are correct; if not, advance the needle timing.
What to do if the lower thread is tangled at the sewing start on my Brother S-7200B?
If the lower thread is tangling when you start sewing: * Ensure the bobbin spins in the correct direction, opposite to the rotary hook, when the lower thread is pulled. * Make sure the bobbin isn't overfilled; it should be no more than 80% full. * Verify that the anti-spin spring is attached. * If the bobbin isn't turning smoothly, replace it. * Only use bobbins specified by Brother.
What to do if the oil gauge is not visible in the oil gauge window of my Brother S-7200B?
If the oil gauge is not visible, the oil tank may be empty. Fill the oil tank with oil.
What to do if my Brother Sewing Machine stops during sewing?
If the machine stops during sewing, check if the fixed stitch key is turned on. If so, press the fixed stitch key so that the indicator turns off. Also, the power supply voltage may be too low; check the power supply.
What to do if my Brother Sewing Machine does not operate when power is on and the treadle is pressed?
If the machine does not operate when the power is on and the treadle is pressed, the power supply connector may be disconnected from the control box. Insert the connector securely.
Why is the seam uneven on my Brother S-7200B Sewing Machine?
To fix uneven seams on your Brother Sewing Machine, adjust the presser foot pressure if it's too weak. Also, adjust the feed dog height if it's too low. If the bobbin is scratched, smooth it with an oiled grindstone or replace it.
How to reduce puckering on Brother S-7200B?
If you're experiencing a large degree of puckering with your Brother Sewing Machine, weaken the upper and lower thread tension as much as possible. Replace the needle if it's blunt, and use as thin a needle as possible. Reduce the thread take-up spring tensions and lower its position. Adjust the presser foot pressure if it's too strong. Reduce the sewing speed gradually, and tilt the front of the feed dog down slightly to correct its angle.
What causes material slippage on Brother Sewing Machine?
If you're experiencing material slippage with your Brother Sewing Machine, adjust the presser foot pressure.
Why are there loops in the seam of my Brother S-7200B?
If loops appear in the seam of your Brother Sewing Machine, polish the thread path with a fine-grain file or sandpaper if it's not smooth enough. If the bobbin isn't turning smoothly, check for slackness in the thread tension, or replace the bobbin or bobbin case.
Why is my Brother Sewing Machine not operating at high speed?
If your Brother Sewing Machine does not operate at high speed, use the sewing speed control keys to set the high speed, correcting any incorrect sewing speed or backtack speed settings.
General| Type | Industrial Sewing Machine |
|---|---|
| Model | S-7200B |
| Stitch Type | Lockstitch |
| Max Stitch Length | 5 mm |
| Needle Type | DB x 1 |
| Lubrication | Automatic |
| Motor Type | Direct Drive |
| Sewing Speed | 5000 rpm |
