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Sewing Machine
Harbor Freight Tools
3914
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Page 23
For technical questions, please call 1-800-444-3353.
SKU 3914
a- arM Bed aSSeMBl
y drawing
46
Motor (DOL 12-Ha)
(Not Shown)
Contents
Main
Single needle induStrial Sewing Machine
Model
3914
Save this Manual
SaFety warningS and precautiOnS
SpeciFicatiOnS
Page
Sewing Safety precautions
grOunding
grounded tools: tools with three prong plugs
extension cords
Symbology
V~ a
unpacKing
aSSeMBly
Page
Page
Page
Page
OperatiOn
BaSic SettingS
attaching the needle
Bobbin winder Operation
winding thread Onto the Bobbin
Setting the Bobbin into the Bobbin case and into the Machine
threading the top thread
adjusting the Stitch length
adjusting the needle thread tension
adjusting the Bobbin thread tension
raising the presser Foot
Setting the presser Foot pressure
adVanced SettingS
adjusting the Feed timing
adjusting Feed dog height
adjusting needle-to-hook timing
adjusting the presser Bar height
adjusting the thread take-up Stroke
adjusting the height of the Knee lifter
adjusting Sewing Speed with pulleys (sold separately)
Maintenance
Page
Page 22 For technical questions, please call 1-800-444-3353. SKU 3914
a - arM Bed partS liSt
Page
Page 24 For technical questions, please call 1-800-444-3353. SKU 3914
B - Main ShaFt partS liSt
Page
Page 26 For technical questions, please call 1-800-444-3353. SKU 3914
c- Stitch driVe partS liSt
Page
Page 28 For technical questions, please call 1-800-444-3353. SKU 3914
d - preSSer Bar partS liSt
Page
Page 30 For technical questions, please call 1-800-444-3353. SKU 3914
e - Feed cOntrOl partS liSt
Page
Page 32 For technical questions, please call 1-800-444-3353. SKU 3914
F - luBricatiOn partS liSt
Page
g - BaSe aSSeMBly drawing and partS liSt
h - acceSSOrieS partS liSt and aSSeMBly drawing
Page 36 For technical questions, please call 1-800-444-3353. SKU 3914
i - BOBBin winder & thread Stand unit partS liSt
Page
Page 38 For technical questions, please call 1-800-444-3353. SKU 3914
J - MOtOr partS liSt
Page
liMited 90 day warranty
pleaSe read the FOllOwing careFully