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Harbor Freight Tools 3914 manuel d'utilisation

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Table des matières du manuel d’utilisation

  • Page 1

    SINGLE NEEDLE INDUSTRIAL SEWING MACHINE Model 3914 SET UP AND OPERA TING INSTRUCTIONS Visit our website at: http://www .harborfreight.com Read this material before using this product. Failure to do so can result in serious injury . SA VE THIS MANUAL. Copyright © 2005 by Harbor Freight T ools ® . All rights reserved. No portion of this manual or a[...]

  • Page 2

    Page 2 For technical questions, please call 1-800-444-3353. SKU 3914 Save This Manual Y ou will need the manual for the safety warnings and precautions, assembly instructions, operating and maintenance procedures, parts list and diagram. Keep your invoice with this manual. Write the invoice number on the inside of the front cover . Keep the manual [...]

  • Page 3

    Page 3 For technical questions, please call 1-800-444-3353. SKU 3914 inhibit rust. Always lock up tools and keep out of reach of children. Use the right product for the job 5. . Do not attempt to force a small product or attachment to do the work of a larger industrial tool. There are certain applications for which this product was designed. It wil[...]

  • Page 4

    Page 4 For technical questions, please call 1-800-444-3353. SKU 3914 to supply the correct current to the tool without heating up. Otherwise, the extension cord could melt and catch re, or cause electrical damage to the tool. This tool requires use of an extension cord with up to 10 amps capability (up to 50 feet), with wire size rated at 18 A W[...]

  • Page 5

    Page 5 For technical questions, please call 1-800-444-3353. SKU 3914 GROUNDING TO PREVENT ELECTRIC SHOCK AND DEA TH FROM INCORRECT GROUNDING WIRE CONNECTION: Check with a qualied electrician if you are in doubt as to whether the outlet is properly grounded. Do not modify the power cord plug provided with the tool. Never remove the grounding pron[...]

  • Page 6

    Page 6 For technical questions, please call 1-800-444-3353. SKU 3914 the required minimum cord size. (See T able A.) If you are using an extension cord 6. outdoors, make sure it is marked with the sufx “W-A” (“W” in Canada) to indicate it is acceptable for outdoor use. Make sure the extension cord is properly 7. wired and in good electri[...]

  • Page 7

    Page 7 For technical questions, please call 1-800-444-3353. SKU 3914 ASSEMBL Y Sewing Machine Motor Power Switch Knee Lifting Arm for Presser Foot T able Stand and T op (not provided) Figure 1 The assembly instructions describe mounting the Single-Needle Sewing Machine (Model 03914) to the T able Stand (Model 03929), not included. In order to compl[...]

  • Page 8

    Page 8 For technical questions, please call 1-800-444-3353. SKU 3914 Knee Press Lifter Rod (2g) Oil Pan Magnet (22g) Oil Sight Window (1f) Figure 5 Hand Wheel (7b) 7. T ilt the machine back to expose the Oil Pan (1g). Insert the Knee Press Lifter Rod (2g). Place the Oil Pan Magnet (22g) in the lowest portion of the Oil Pan. Fill the Oil Pan with th[...]

  • Page 9

    Page 9 For technical questions, please call 1-800-444-3353. SKU 3914 Figure 7 Hand Wheel (7b) Sewing Machine Set Screws (8b) (One on each side of the Pulley) Belt (71j) Slot in T abletop for belt Main Shaft (32b) Bobbin Winder Assembly 3. Slide the Sewing Machine Hand Wheel (7b) onto the Main Shaft (32b) of the Sewing Machine. Align one of the Set [...]

  • Page 10

    Page 10 For technical questions, please call 1-800-444-3353. SKU 3914 REV 04c, 05d, 07g, 10b and turn it around. Move the belt by hand to verify that it is aligned and tracking correctly . Once you have the Pulleys aligned, 2. remove the Belt from the Sewing Machine Hand Wheel (7b), and tighten its Set Screws (8b). Replace the Pulley and tighten th[...]

  • Page 11

    Page 1 1 For technical questions, please call 1-800-444-3353. SKU 3914 Mounting the Thread Stand Figure 13 Thread Hanger (28i) Upper Spool Rest Rod (30i) Lower Spool Rest Rod (36i) Column Pipe Connector (33i) Spool Pins (40i) Note: The Thread Stand is designed to be mounted on the T able Stand Kit (Model 03929-sold separately). Unless indicated oth[...]

  • Page 12

    Page 12 For technical questions, please call 1-800-444-3353. SKU 3914 Cap over the end of the Upper Spool Rest Rod. Mounting the Bobbin Winder The Bobbin Winder is used to wind thread onto the Bobbin (17h). It is mounted so that it contacts the Belt (71j) when needed for bobbin winding. Note: Unless indicated otherwise, all parts referred to in thi[...]

  • Page 13

    Page 13 For technical questions, please call 1-800-444-3353. SKU 3914 moderate to slow speeds for the rst 15 minutes of use. W ARNING: Shut the machine off completely before working around the needle or other moving parts. BASIC SETTINGS Y ou will need to make the following adjustments on a regular basis when using the machine. Attaching the Nee[...]

  • Page 14

    Page 14 For technical questions, please call 1-800-444-3353. SKU 3914 Winding Thread Onto the Bobbin Thread Guide Hole (43i) Thread from Spool (not shown) Figure 20 Bobbin Winder Shaft (5i) Thread T ension Bracket (18i) T ension Discs (21i) Bobbin (17h) 1. Route the Thread from the Spool, up through the Thread Guide Hole (43i), through the hole in [...]

  • Page 15

    Page 15 For technical questions, please call 1-800-444-3353. SKU 3914 Figure 25 3 (detail) Thread T ension Discs (27a) Thread T ake-up Eyelet (1b) Thread T ake-up Cover (17a) Faceplate Thread Guide (34a) Thread T ension Discs (7a) 3-Hole Thread Eyelet (31a) Thread Release Finger ( 31d) Thread Guide (35a) T ake-up Spring (9a) 5 (detail) Needle Bar T[...]

  • Page 16

    Page 16 For technical questions, please call 1-800-444-3353. SKU 3914 pulling it to the top of the machine. Pull both threads behind the Presser Foot, leaving at least 4” of excess thread. Adjusting the Stitch Length Figure 26 Stitch Length Dial (46e) T o increase or decrease the stitch length, turn the Stitch Length Dial (46e) to the desired num[...]

  • Page 17

    Page 17 For technical questions, please call 1-800-444-3353. SKU 3914 Figure 29 Presser Foot Lever (18d) Raises Presser Foot Lowers Presser Foot 1. T o raise the Presser Foot, turn the Presser Foot Lever up. The Presser Foot will go up about 1/4” and stop. T o lower the Presser Foot, turn the 2. Presser Foot Lever down. Setting the Presser Foot P[...]

  • Page 18

    Page 18 For technical questions, please call 1-800-444-3353. SKU 3914 Feed Lifting Shaft Crank (1e) Feed Bar Body Subassembly (4e) Bolt (2e) Figure 32 0.03”~0.033” ( ) 0.028”~0.031” ( ) 0.037”~0.041” ( ) 1. Loosen the Bolt (2e) of the Feed Lifting Shaft Crank (1e). Move the Feed Bar Body Subassembly 2. (4e) up or down to make the adjust[...]

  • Page 19

    Page 19 For technical questions, please call 1-800-444-3353. SKU 3914 Adjusting the Presser Bar Height Figure 34 Rubber Plug (37a) & Presser Bar Set Screw (32d) 1. Remove and set aside the Rubber Plug (37a), and loosen the Presser Bar Set Screw (32d). Manually adjust the Presser Bar height, 2. and the angle of the Presser Foot. After adjusting,[...]

  • Page 20

    Page 20 For technical questions, please call 1-800-444-3353. SKU 3914 Adjusting Sewing Speed with Pulleys (sold separately) This machine is a fast running machine. It can be adjusted to a slower running machine by changing the pulley on the motor to a smaller diameter pulley . Consult a qualied sewing machine repair shop to replace the pulley wi[...]

  • Page 21

    Page 21 For technical questions, please call 1-800-444-3353. SKU 3914 MOT OR WIRING DIAGRAM REV 07g, 10b[...]

  • Page 22

    Page 22 For technical questions, please call 1-800-444-3353. SKU 3914 A - ARM BED P ARTS LIST Part Description Qty 1a Arm Bed Assembly 1 2a T ension Complete Subassembly 1 3a T ension Adjustment Knob 1 4a Thread Disc Rotation Stopper 1 5a Thread T ension Spring 1 6a Thread Release Disc 1 7a Thread T ension Disc 2 8a T ension Screw 1 9a T ake-up Spr[...]

  • Page 23

    Page 23 For technical questions, please call 1-800-444-3353. SKU 3914 A- ARM BED ASSEMBL Y DRA WING 46 Motor (DOL 12-Ha) (Not Shown)[...]

  • Page 24

    Page 24 For technical questions, please call 1-800-444-3353. SKU 3914 B - MAIN SHAFT P ARTS LIST Part Description Qty 1b Thread T ake-up Eyelet 1 2b Needle Bar Crank 1 3b Set Screw 1 4b Bolt 1 5b O-Ring 1 6b Thread T ake-up Lever Link 1 7b Hand Wheel 1 8b Set Screw 2 9b Sealing Ring 1 10b Main Shaft Rear Bushing Sub-assembly 1 1 1b Plate 1 12b Feed[...]

  • Page 25

    Page 25 For technical questions, please call 1-800-444-3353. SKU 3914 B - MAIN SHAFT ASSEMBL Y DRA WING REV 10b[...]

  • Page 26

    Page 26 For technical questions, please call 1-800-444-3353. SKU 3914 C- STITCH DRIVE P ARTS LIST Part Description Qty 1c Bolt 1 2c Rotating Hook Positioning Finger 1 3c Upright Shaft Lower Bushing 1 4c Set Screw 8 5c Bevel Gear 1 6c Upright Shaft 1 7c Bevel Pinion 1 8c Bolt 2 9c Hook Driving Shaft Rear Bushing 1 10c Bolt 2 1 1c Hook Driving Shaft [...]

  • Page 27

    Page 27 For technical questions, please call 1-800-444-3353. SKU 3914 C - STITCH DRIVE ASSEMBL Y DRA WING[...]

  • Page 28

    Page 28 For technical questions, please call 1-800-444-3353. SKU 3914 D - PRESSER BAR P ARTS LIST Part Description Qty 1d Bolt 1 2d Bolt 1 3d Spring 1 4d W asher 1 5d W asher 1 6d Bolt 1 7d Snap Ring 1 8d Pin 1 9d Presser Foot 1 10d Bolt 1 1 1d Presser Bar 1 12d Presser Bar Bushing 1 13d Presser Bar Guide Bracket 1 14d Lift Hook 1 15d Spring 6 16d [...]

  • Page 29

    Page 29 For technical questions, please call 1-800-444-3353. SKU 3914 D - PRESSER BAR ASSEMBL Y DRA WING[...]

  • Page 30

    Page 30 For technical questions, please call 1-800-444-3353. SKU 3914 E - FEED CONTROL P ARTS LIST Part Description Qty 1e Feed Lifting Shaft Crank 1 2e Bolt 1 3e Bolt 1 4e Feed Bar Body Subassembly 1 5e Feed Dog 1 6e Snap Ring 1 7e Bushing 1 8e Thrust Collar 1 9e Set Screw 1 10e Feed Drive Shaft 1 1 1e Feed Rocker Shaft 1 12e Bolt 1 13e Feed Drive[...]

  • Page 31

    Page 31 For technical questions, please call 1-800-444-3353. SKU 3914 E - FEED CONTROL ASSEMBL Y DRA WING[...]

  • Page 32

    Page 32 For technical questions, please call 1-800-444-3353. SKU 3914 F - LUBRICA TION P ARTS LIST Part Description Qty 1f Oil Sight Window 1 2f Main Shaft Oil T ube 1 3f Oil Return T ube Holder 1 4f Oil Pump Installing Base 1 5f Lubrication Oil Pump Subassembly 1 6f Oil Pump Screen 1 7f Bushing 1 8f Impeller 1 9f Lubrication Oil Pump 1 10f Oil Ret[...]

  • Page 33

    Page 33 For technical questions, please call 1-800-444-3353. SKU 3914 F - LUBRICA TION ASSEMBL Y DRA WING[...]

  • Page 34

    Page 34 For technical questions, please call 1-800-444-3353. SKU 3914 G - BASE ASSEMBL Y DRA WING AND P ARTS LIST Part Description Qty 1g Oil Pan 1 2g Knee Press Lifter Rod 1 3g Rubber Cushion 4 4g Gasket 1 5g Bolt 1 6g O-Ring 1 7g Stud 2 8g Nut 2 9g Bolt 1 10g Spring 1 1 1g Snap Ring 1 12g Knee Press Shaft 1 13g Rubber Joint 1 Part Description Qty[...]

  • Page 35

    Page 35 For technical questions, please call 1-800-444-3353. SKU 3914 H - ACCESSORIES P ARTS LIST AND ASSEMBL Y DRA WING Part Description Qty 1h Hinge 2 2h Hinge Cushion 2 3h T ack 4 4h Front Belt Cover 1 5h Belt Cover Cap 1 6h Rear Belt Cover Assembly 1 7h Rear Belt Cover 1 8h Rear Belt Cover Assembly 1 9h Wood Screw 1 10h Belt Cover Bolt 1 Part D[...]

  • Page 36

    Page 36 For technical questions, please call 1-800-444-3353. SKU 3914 I - BOBBIN WINDER & THREAD ST AND UNIT P ARTS LIST Part Description Qty 1i Base 1 2i Thread Winder Base Assembly 1 3i Wheel 1 4i Bolt 1 5i Bobbin Winder Shaft 1 6i Connecting Rod 1 7i Connecting Rod Pin 1 8i Bobbin Winder Frame Rod 1 9i Bobbin Winder Frame Pin 1 10i Bolt 1 1 [...]

  • Page 37

    Page 37 For technical questions, please call 1-800-444-3353. SKU 3914 I - BOBBIN WINDER & THREAD ST AND UNIT ASSEMBL Y DRA WING[...]

  • Page 38

    Page 38 For technical questions, please call 1-800-444-3353. SKU 3914 J - MOT OR P ARTS LIST Note: When ordering parts for this component use the sufx “j”. Note: Some parts are listed and shown for illustration purposes only , and are not available individually as replacement parts. REV 10b Part Description Qty 1j Pulley Safety Cover 1 2j Bo[...]

  • Page 39

    Page 39 For technical questions, please call 1-800-444-3353. SKU 3914 J - MOT OR ASSEMBL Y DRA WING[...]

  • Page 40

    Page 40 For technical questions, please call 1-800-444-3353. SKU 3914 LIMITED 90 DA Y W ARRANTY Harbor Freight T ools Co. makes every effort to assure that its products meet high quality and durability standards, and warrants to the original purchaser that this product is free from defects in materials and workmanship for the period of 90 days from[...]