Manuale d’uso / di manutenzione del prodotto 3914 del fabbricante Harbor Freight Tools
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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 ® .
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.
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.
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.
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 qualied electrician if you are in doubt as to whether the outlet is properly grounded.
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 sufx “W-A” (“W” in Canada) to indicate it is acceptable for outdoor use.
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.
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).
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.
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).
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).
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.
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.
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.
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 (3.
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.
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.
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).
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).
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 .
Page 21 For technical questions, please call 1-800-444-3353. SKU 3914 MOT OR WIRING DIAGRAM REV 07g, 10b.
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 .
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 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-Ri.
Page 25 For technical questions, please call 1-800-444-3353. SKU 3914 B - MAIN SHAFT ASSEMBL Y DRA WING REV 10b.
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 .
Page 27 For technical questions, please call 1-800-444-3353. SKU 3914 C - STITCH DRIVE ASSEMBL Y DRA WING.
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 .
Page 29 For technical questions, please call 1-800-444-3353. SKU 3914 D - PRESSER BAR ASSEMBL Y DRA WING.
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.
Page 31 For technical questions, please call 1-800-444-3353. SKU 3914 E - FEED CONTROL ASSEMBL Y DRA WING.
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 .
Page 33 For technical questions, please call 1-800-444-3353. SKU 3914 F - LUBRICA TION ASSEMBL Y DRA WING.
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 Ga.
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 Cov.
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 .
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 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 sufx “j”. Note: Some parts are listed and shown for illustration purposes only , and are not available individually as replacement parts.
Page 39 For technical questions, please call 1-800-444-3353. SKU 3914 J - MOT OR ASSEMBL Y DRA WING.
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 durabilit.
Un punto importante, dopo l’acquisto del dispositivo (o anche prima di acquisto) è quello di leggere il manuale. Dobbiamo farlo per diversi motivi semplici:
Se non hai ancora comprato il Harbor Freight Tools 3914 è un buon momento per familiarizzare con i dati di base del prodotto. Prime consultare le pagine iniziali del manuale d’uso, che si trova al di sopra. Dovresti trovare lì i dati tecnici più importanti del Harbor Freight Tools 3914 - in questo modo è possibile verificare se l’apparecchio soddisfa le tue esigenze. Esplorando le pagine segenti del manuali d’uso Harbor Freight Tools 3914 imparerai tutte le caratteristiche del prodotto e le informazioni sul suo funzionamento. Le informazioni sul Harbor Freight Tools 3914 ti aiuteranno sicuramente a prendere una decisione relativa all’acquisto.
In una situazione in cui hai già il Harbor Freight Tools 3914, ma non hai ancora letto il manuale d’uso, dovresti farlo per le ragioni sopra descritte. Saprai quindi se hai correttamente usato le funzioni disponibili, e se hai commesso errori che possono ridurre la durata di vita del Harbor Freight Tools 3914.
Tuttavia, uno dei ruoli più importanti per l’utente svolti dal manuale d’uso è quello di aiutare a risolvere i problemi con il Harbor Freight Tools 3914. Quasi sempre, ci troverai Troubleshooting, cioè i guasti più frequenti e malfunzionamenti del dispositivo Harbor Freight Tools 3914 insieme con le istruzioni su come risolverli. Anche se non si riesci a risolvere il problema, il manuale d’uso ti mostrerà il percorso di ulteriori procedimenti – il contatto con il centro servizio clienti o il servizio più vicino.
