Cleaning The Thread Paths Of The Upper Threads - Brother PR670E Operation Manual

Cleaning the thread paths of the
upper threads
If dust or lint has accumulated in the thread guides
or tension unit in the paths of the upper threads,
the thread may break while embroidery is being
sewn. Periodically clean the thread paths.
■ Cleaning the thread guides
a Use the included cleaning brush to remove
any lint and dust from below the thread
guide plates.
Clean the thread guide plates for both the upper thread
guides and the middle thread guides.
1 Upper thread guide
2 Middle thread guide
1 Thread guide plate
■ Disassembling and cleaning the
tension unit
a To remove tension dial, turn dial
counterclockwise as shown on illustration.
1 Tension dial
b Using the included cleaning brush, remove
any lint and dust from the two pieces of felt
washers (top, bottom) inside the tension
dial.
1 Tension dial
2 Nylon shoulder washer
3 Nylon washer only for tension number 4
4 Tension spring
5 Tension base spring
6 Felt washer (top)
7 Tension disc
8 Felt washer (bottom)
APPENDIX
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