Harbor Freight Tools 3914 operating instructions Threading the Top Thread, Detail

Page 15

Threading the Top Thread

Set the spool of thread (sold separately) onto the top thread Spool Pin (40i), (the left Spool Pin), and thread it through the eyelet directly above on the Thread Hanger (28i). Guide the thread through the machine, following the steps and photos below.

Note: There are two Spool Pins (40i). The left Pin is commonly used to hold the spool of thread for the top thread (the thread that passes through the top section of the machine), while the right Pin is used to hold the spool of thread that is used for winding the bobbin.

Thread Hanger (28i)

Spool

Pins (40i)

Figure 24

Thread Tension Discs (27a)

Thread Take-up Cover (17a)

1

Thread Take-up

 

 

 

Eyelet (1b)

 

 

Faceplate

 

 

Thread

2

3-Hole Thread

Guide (34a)

4

 

Eyelet (31a)

 

 

 

3

3 (detail)

 

 

 

 

Thread Guide

5

 

(35a)

 

 

Thread Release

 

Thread Tension

Finger ( 31d)

 

Discs (7a)

Take-up Spring

(9a)

1.

Pass the thread between the two Thread

 

Tension Discs (27a) on the top of the

 

machine.

2.

Pass the thread up through the right

 

eyelet then down through the left eyelet

 

on the 3-Hole Thread Eyelet (31a).

3.

Pass the thread between the two Thread

 

Tension Discs (7a) pulling to the right

 

until the thread catches in the Take-up

 

Spring (9a). Then pass under the Thread

 

Release Finger (31d) and behind the

 

Thread Guide (35a).

4.

Pass behind the Thread Take-up Cover

 

(17a), through the Thread Take-up Eyelet

 

(1b) from right to left, and down through

Wire Needle

Bar Thread

Guide (26c)

Needle Bar

5 (detail)

the Faceplate Thread Guide (34a).

5. Pass the thread into the Wire Needle Bar

Thread Guide (26c), through the hole

in the Needle Bar Thread Guide (24c),

Thread Guide

(24c)

Needle (23c)

wire guide

Presser

Foot (9d)

Figure 25

REV 10b

through the Needle (23c) from left to

right, under the wire guide and between

the opening in the Presser Foot (9d).

6. To pull the bobbin thread up to the top

of the machine, hold the top thread

behind the Presser foot and turn the

Hand Wheel (7b) counterclockwsie until

the Needle catches the bobbin thread,

SKU 3914

For technical questions, please call 1-800-444-3353.

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Contents Single needle industrial Sewing Machine For technical questions or replacement parts, please callSave This Manual SpecificationsSafety Warnings Precautions Read all instructions before using this ToolFor technical questions, please call Sewing Safety Precautions Grounding Grounded Tools Tools with Three Prong PlugsExtension Cords Unpacking Table a25’ 50’ 75’ 100’ 150’ Assembly Mounting the Motor Aligning the Pulleys Bobbin Winder AssemblyAdjusting the Belt Tension SKU For technical questions, please call Mounting the Thread StandInstalling the Belt Covers OperationMounting the Bobbin Winder OFF Position Attaching the NeedleBobbin Winder Operation Moderate to slow speeds for the first 15 minutes of useWith the thread Detail Threading the Top ThreadRaising the Presser Foot Adjusting the Stitch LengthAdjusting the Needle Thread Tension Adjusting the Bobbin Thread TensionSetting the Presser Foot Pressure Adjusting the Feed TimingAdjusting Feed Dog Height Adjusting Needle-to-hook Timing Adjusting the Height of the Knee Lifter Adjusting the Presser Bar HeightAdjusting Sewing Speed with Pulleys sold separately MaintenanceMotor Wiring Diagram Part Description Qty ARM BED Parts ListARM BED Assembly Drawing Main Shaft Parts List Main Shaft assembly Drawing Stitch Drive Parts List Stitch Drive Assembly Drawing Presser BAR Parts List Presser BAR Assembly Drawing Feed Control Parts List Feed Control Assembly Drawing Lubrication Parts List Lubrication Assembly Drawing Base Assembly Drawing and Parts List Accessories Parts List and Assembly Drawing Bobbin Winder & Thread Stand Unit Parts List Bobbin Winder & Thread Stand Unit Assembly Drawing Motor Parts List Motor Assembly Drawing Limited 90 DAY Warranty

3914 specifications

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