Brother S-7220B Instruction Manual page 48

Single needle direct drive needle feed lock stitcher with thread trimmer

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11. CLEANING

B. Oil tank oil quantity

Check the oil gauge window (1), and add more oil if the oil

gauge (2) is below the lower reference line.

(Refer to page 8.)

Upper reference

line

Lower reference

line

3752M

3. Checking

1. Replace the needle if it is bent or if the tip is broken.

2. Check that the upper threads have been threaded

3. Carry out a test sewing.

3753M

S-7220B

correctly. (Refer to page 15.)

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