Janome 644D Instruction Manual
Thread and Needle Chart
Type of fabric
Lightweight
Organdy,
Georgette,
Lawn, Crepe
de chine,
Lining.
Mediumweight
Cotton, Linen,
Satin, Ordinary
fabric.
Heavyweight
Tweed,
Coating, Denim,
Doeskin,
Thick fabric.
Knits
Knitted fabric.
* Refer to page 22 for adjusting the stitch length and differential feed ratio.
NOTE: Your overlock uses standard sewing needles (HA-1 SP, No.11, No.14).
www.toews.com
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Type of thread
Cotton:
No. 80 – 100
Silk:
No. 80 – 100
Synthetic: No. 80 – 100
Cotton:
No. 60 – 100
Silk:
No. 50 – 100
Synthetic: No. 60 – 100
Cotton:
No. 50 – 60
Silk:
No. 50 – 60
Synthetic: No. 50 – 60
Cotton:
No. 60 – 80
Synthetic: No. 60 – 90
Woolly nylon (For looper
thread)
Woolly polyester (For
looper thread)
Needle
Stitch length
4
3
2
HA-1 SP
2.0 – 3.0
No. 11
HA-1 SP
2.5 – 3.5
No. 11 – 14
HA-1 SP
3.0 – 5.0
No. 14
HA-1 SP
2.5 – 4.0
No. 11 – 14
644D Owners Manual/ User Guide
Janome Serger
Differential
feed ratio
1.5
1.0
0.5 – 1.0
1.0
1.0
1.0 – 2.2