Harbor Freight Tools 3914, Assembly And Operating Instructions Manual

Page 1: ...491 Mission Oaks Blvd Camarillo CA 93011 Visit our Web site at http www harborfreight com Copyright 2003 by Harbor Freight Tools All rights reserved No portion of this manual or any artwork contained herein may be reproduced in any shape or form without the express written consent of Harbor Freight Tools For technical questions and replacement parts please call 1 800 444 3353 03914 ...

Page 2: ... this manual Write the invoice number on the inside of the front cover Keep the manual and invoice in a safe and dry place for future reference Safety Warnings and Precautions WARNING When using tool basic safety precautions should always be followed to re duce the risk of personal injury and damage to equipment Read all instructions before using this tool 1 Keep work area clean Cluttered areas in...

Page 3: ...ting wrenches are removed from the machine work surface before plugging it in 11 Avoid unintentional starting Be sure the switch is in the Off position when not in use and before plugging in 12 Stay alert Watch what you are doing use common sense Do not operate when you are tired 13 Check for damaged parts Before using any product any part that appears damaged should be carefully checked to determ...

Page 4: ...ool performance Warning The warnings cautions and instructions discussed in this instruction manual cannot cover all possible conditions and situations that may occur It must be under stood by the operator that common sense and caution are factors which cannot be built into this product but must be supplied by the operator Sewing Safety Precautions 1 Keep hands away from the needle when you turn t...

Page 5: ... rectangular hole of the Table Stand where the machine will sit 2 Place two rubber seats A on the operator side corner rests and secure with supplied hardware C See figure 1 3 Place two cushion seats B on the hinge side corner rests and secure with supplied hardware C 4 Seat the Oil Pan D on the corner seats A and B See figure 2 5 Insert Hinges E into the opening in the machine bed See figure 3 Se...

Page 6: ...tor to the underside of the table top as shown below Use the supplied hardware 11 Place the V belt around the Sewing Machine Pulley through the slot in the table top and around the Motor pulley Attach the Pulley Safety Cover 12 Tighten the V belt tension by adjusting the long bolt and nut at location K The proper tension is reached when the V belt can only be pushed in 1 2 inch K Note Top switch i...

Page 7: ... has tabs that hold onto the corners of the Nut to make tightening easier When assembling place the Nut on the side with these tabs Tighten the Screw 16 Insert the threaded end of the Spool Pin 40 through one of the holes in the top of the arm of the Spool Support 46 Place a Washer 32 and Nut 35 over the end of the Pin and tighten Place the Spool Rest 41 Spool Mat 42 and the Spool Vibration Stoppe...

Page 8: ...e using two Wood Screws 26 and Washers 27 Leave the Screws just loose enough to allow the Base to slide 23 Swing the Sewing Machine back into it s operating position Put the Bobbin Winder in the OFF position see OFF Position below Slide the Bobbin Winder Assembly close to the belt until it just barely doesn t touch it 1 8 gap or less see Figure B above Tighten the Wood Screws 26 from step 22 above...

Page 9: ...hat the Bobbin rotates in the direction of the arrow when thread C is pulled ON Position This position is with the Connecting Rod 6 pressed as shown in Figure C The Bobbin Winder will put pressure on the belt and cause the machine to operate The Shaft on the Bobbin Winder will also spin winding thread onto the Bobbin if the Winder is set up to do so Winding Thread Onto the Bobbin 1 Place a Bobbin ...

Page 10: ...ers as indicated under the scale dot A on the machine 2 To decrease the stitch length turn the Stitch Length Dial 1 while pressing the Feed Lever 2 Adjusting the Needle Thread Tension 1 Turn Tension Adjustment Knob 1 clockwise A to increase thread tension 2 Turn Tension Adjustment Knob 1 counterclockwise B to decrease thread tension Adjusting the Bobbin Thread Tension 1 Turn the Tension Adjustment...

Page 11: ...ith its Presser Foot up turn the Hand Lifter 1 up A The Presser Foot will go up about 1 4 inch and stop 2 To set the Presser Foot to its original position turn the Hand Lifter 1 down B Using the Knee Lifter you can get the standard Presser Foot lift of about 1 2 inch Setting the Presser Foot Pressure 1 Loosen Nut 2 and turn the Presser Spring Regulator 1 clockwise A to increase Presser Foot pressu...

Page 12: ...needle bar 2 with the bottom end of the needle bar lower bushing 3 then tighten Set Screw 1 When using a DAX1 needle align to marker line B on the needle bar 2 with the bottom end of the needle bar lower bushing 3 then tighten Set Screw 1 4 When using a DBX1 needle loosen three Hook Set Screws turn the Hand Wheel and align the marker line B on the needle bar 2 with the bottom end of the needle bar...

Page 13: ...aligned with the center of the screw Adjusting the Height of the Knee Lifter The standard height of the Presser Foot lifted using the Knee Lifter is 0 39 inch 10 mm 1 To adjust the Presser Foot lift up to 0 5 inch 13 mm adjust the Screw 1 2 When the Presser Foot lift is adjusted over 0 39 inch 10 mm be sure that the bottom end of the Needle Bar 2 does not hit the Presser Foot 3 This can be manuall...

Page 14: ...Page 14 SKU 03914 Ref Amt No Part No Description Req ARM BED PARTS LIST ...

Page 15: ...LACEMENTS SHOULD BE UNDERTAKEN BY CERTIFIED AND LICENSED TECHNICIANS AND NOT BY THE BUYER THE BUYER ASSUMES ALL RISK AND LIABILITY ARISING OUT OF HIS OR HER REPAIRS TO THE ORIGINAL PRODUCT OR REPLACEMENT PARTS THERETO OR ARISING OUT OF HIS OR HER INSTALLATION OF REPLACEMENT PARTS THERETO NOTE Some parts are listed and shown for illustration purposes only and are not available individually as repla...

Page 16: ...Page 16 SKU 03914 Ref Amt No Part No Description Req MAIN SHAFT THREAD TAKE UP PARTS LIST ...

Page 17: ...Page 17 SKU 03914 MAIN SHAFT THREAD TAKE UP ASSEMBLY DRAWING ...

Page 18: ...Page 18 SKU 03914 Ref Amt No Part No Description Req FABRIC PIERCING HOOK DRIVING PARTS LIST ...

Page 19: ...Page 19 SKU 03914 FABRIC PIERCING HOOK DRIVING ASSEMBLY DRAWING ...

Page 20: ...Page 20 SKU 03914 Ref Amt No Part No Description Req PRESSER BAR PARTS LIST ...

Page 21: ...Page 21 SKU 03914 PRESSER BAR ASSEMBLY DRAWING ...

Page 22: ...Page 22 SKU 03914 Ref Amt No Part No Description Req FEED MECHANISM PARTS LIST ...

Page 23: ...Page 23 SKU 03914 FEED MECHANISM ASSEMBLY DRAWING ...

Page 24: ...Page 24 SKU 03914 Ref Amt No Part No Description Req LUBRICATION PARTS LIST ...

Page 25: ...Page 25 SKU 03914 LUBRICATION ASSEMBLY DRAWING ...

Page 26: ...Page 26 SKU 03914 Ref Amt No Part No Description Req OIL RESERVOIR KNEE LIFTER ASSEMBLY DRAWING AND PARTS LIST ...

Page 27: ...Page 27 SKU 03914 Ref Amt No Part No Description Req MACHINE HEAD ACCESSORIES PARTS LIST AND ASSEMBLY DRAWING ...

Page 28: ...Page 28 SKU 03914 Ref Amt No Part No Description Req BOBBIN WINDER THREAD STAND UNIT PARTS LIST REV 03 04 ...

Page 29: ...Page 29 SKU 03914 BOBBIN WINDER THREAD STAND UNIT ASSEMBLY DRAWING REV 03 04 ...