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M
mgonzalezSep 14, 2025
What does it mean when the GREASE indicator illuminates and the buzzer sounds on my Brother T-8420C?
What does it mean when the GREASE indicator illuminates and the buzzer sounds on my Brother T-8420C?
General| Stitch Width | 7mm |
|---|---|
| Stitch Length | 5mm |
| Built-in Memory | Yes |
| LCD Screen | Yes |
| Automatic Needle Threader | Yes |
| Drop Feed | Yes |
| Free Arm | Yes |
| Category | Sewing |
Explains safety indications and symbols used in the manual and on the machine.
Guide on adjusting upper and lower thread tensions for optimal stitches.
How to adjust the presser foot pressure for different materials.
How to adjust the thread take-up amount for different sewing conditions.
Adjusting the thread take-up amount using stopper heights.
Adjusting the tension of the thread take-up springs for both threads.
Checking and adjusting clearance between the rotary hook and needle plate.
Adjusting the clearance between the rotary hook and opener.
Procedure for setting the correct timing between the needle and rotary hook.
Adjusting the height of the presser foot.
Checks for power, connections, and V-belt installation.
Checks needle, installation, pressure, and thread tension.
Checks presser foot pressure, feed dog height, bobbin, and V-belt tension.
Checks needle, installation, threading, oil, tension, rotary hook.
Checks thread path, tension, and take-up spring range.
Checks thread path, bobbin, take-up amount, and needle width.
Checks thread tensions and take-up spring settings.
Checks material, needle, feed dog, needle bar rotation.
Checks presser foot pressure and thread take-up amount.
Indicates it's time to apply grease to the sewing machine.
Checks bobbin direction, winding, and type.
