Installing The Bobbin Case; Installing The Anti-Spin Spring - Brother BAS-300G-484/484SF Instruction Manual

4. PREPARATION BEFORE SEWING

4-5. Installing the bobbin case

Turn off the power switch before installing the bobbin case.
If the foot switch is depressed by mistake, the sewing machine might start operating and injury could result.
4664M
1. Pull the hook cover (1) downward to open it.
2. While holding the bobbin so that the thread winds to the left, insert the bobbin into the bobbin case.
3. Pass the thread through the thread slot (2), pass it underneath the spring (3), and then pass it through the thread guide (4),
leaving a trailing-out length of about 30 mm.
4. Hold the latch on the bobbin case and insert the bobbin case into the rotary hook.

4-6. Installing the anti-spin spring

If the following situations occur, operation can be improved by using an anti-spin spring.
• The lower thread becomes tangled inside the bobbin case
• Uneven thread tightening occurs at the sewing start
Installation
1. While inserting the projections on
the anti-spin spring (1) into the
grooves of the bobbin case, insert
the anti-spin spring (1).
Insert so that the higher middle
part is facing upward.
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CAUTION
2. Push the anti-spin spring (1) to insert it
securely so that it does not lift up
above the inside edge (A) of the
bobbin case.
BAS-300G-484, BAS-300G-484 SF
Pull
Removal
Use the tip of a screwdriver
or similar to remove as
shown in the illustration.
4715M
4665M
3230Q
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