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Chicago Electric 3914 Assembly And Operation Instructions Manual
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Chicago Electric 3914 Assembly And Operation Instructions Manual

Chicago Electric 3914 Assembly And Operation Instructions Manual

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SEWING MACHINE - SINGLE NEEDLE
AsseMbly And OperAtiOn instructiOns
Due to continuing improvements, actual product may differ slightly from the product described herein.
Visit our website at: http://www.harborfreight.com
tO preVent seriOus injury, reAd And understAnd
All wArnings And instructiOns befOre use.
©
Copyright
2005, 2007 by Harbor Freight Tools
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 or replacement parts, please call 1-800-444-3353.
Model
3491 Mission Oaks Blvd., Camarillo, CA 93011
3914
®
. All rights reserved. No portion of
®

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Summary of Contents for Chicago Electric 3914

  • Page 1 Harbor Freight Tools. for technical questions or replacement parts, please call 1-800-444-3353. Model 3914 ® . All rights reserved. No portion of ®...

  • Page 2: Specifications

    Machine Type Heavy duty, industrial sewing machine; high speed, single needle-lock stitch Drive V-belt driven Foot pedal operation, along with a knee and manual lifting arm for presser foot. Action Presser tension adjustment Feed Type Link style needle feed Sewing Directions...
  • Page 3 dress properly. Do not wear loose clothing or jewelry as they can be caught in moving parts. Protective, electrically nonconductive clothes and nonskid footwear are recom- mended when working. Wear restrictive hair covering to contain long hair. do not overreach. Keep proper footing and balance at all times. Do not reach over or across running machines.
  • Page 4 This ma- chine must be properly grounded. 11. This sewing machine is only to be used for the purpose intended. When unpacking, check to make sure that the parts shown in the photo on the following page are included.
  • Page 5 Knee Lifting Arm for Presser Foot The assembly instructions describe mounting the Single-Needle Sewing Machine (Model 03914) to the Table Stand (Model 03929), not included. In order to complete this procedure, you must first purchase and assemble the Table Stand Kit (Model 03929).
  • Page 6 Tilt the machine back to expose the Oil Pan (D). See figure 5. Fill the Oil Pan with sewing machine lubrication oil (#7 white oil) to the “high” mark “A”. Add more oil when the level is to the “low” mark “B”. After lubrication, and during operation, oil splashing can be seen through the Oil Sight Window (H).
  • Page 7 13. Mount the Power Switch under the table top, on the operator’s side. Use the supplied hardware. Mounting the thread stand Note: The Thread Stand is designed to be mounted on the Table Stand Kit (Model 03929-not included). Unless indicated otherwise, all parts referred to in this set of instructions are listed in the Bobbin Winder &...

  • Page 8: Operation

    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 (...
  • Page 9 winding thread Onto the bobbin Place a Bobbin onto the Bobbin Winder Shaft (5) as shown at point d in Figure C, right. Route the Thread from the Spool (not shown) up through the Thread Guide Tube (43, point a), the hole in the Thread Tension Bracket Assembly (18, b), over and under the far side of the Tension Disc (21, c), and connect it to the Bobbin (d).-See Figure...
  • Page 10 threading the Machine Head Set the thread spool on its holder and guide the thread through the machine as illustrated above. The numbers in the illustration indicate the threading sequence. Adjusting the stitch length To increase the stitch length, turn the Stitch Length Dial (1) to the desired number (in millimeters) as indicated under the scale dot (A) on the machine.
  • Page 11 changing the thread take-up spring stroke and pressure Loosen Set Screw (2). To increase the stroke, turn the Tension Knob Screw (3) clockwise (A). To decrease the stroke, turn the Tension Knob Screw (3) counterclockwise (B). Loosen Set Screw (2) and pull out the Tension Arm (5).
  • Page 12 tightness, move the Feed Eccentric Cam down (counterclockwise). Adjusting the Height of the feed dog The Feed Dog is factory adjusted so that it juts out from the Throat Plate surface 0.8 mm to 0.9 mm. If the Feed Dog juts out too much, pucker- ing may result when sewing lightweight materi- als.

  • Page 13: Maintenance

    This can be manually checked by turning the Hand Wheel. Machine adjustments should only be performed by a qualified technician. Check the oil level weekly when the machine is used daily. Add sewing machine oil as required to the high level marking.
  • Page 14 ref. part no. SKU 03914 for technical questions, please call 1-800-444-3353. ArM bed pArts list description Amt. req. Page 14...
  • Page 15 nOte: When ordering parts from the following lists, always include the list title, item number and description, and page number. For example, to order the first part from page 14 list, you would state: - Arm Bed Parts List - Item #1 - Arm Bed Assembly - Page: 14 nOte: Some parts are listed and shown for illustration purposes only and are not available individually as replacement parts.
  • Page 16 MAin sHAft tHreAd tAKe-up pArts list ref. part no. SKU 03914 for technical questions, please call 1-800-444-3353. Amt. description req. Page 16...
  • Page 17 MAin sHAft tHreAd tAKe-up AsseMbly drAwing Page 17 SKU 03914 for technical questions, please call 1-800-444-3353.
  • Page 18 fAbric--piercing HOOK driVing pArts list ref. part no. SKU 03914 for technical questions, please call 1-800-444-3353. Amt. description req. Page 18...
  • Page 19 fAbric--piercing HOOK driVing AsseMbly drAwing Page 19 SKU 03914 for technical questions, please call 1-800-444-3353.
  • Page 20 ref. part no. SKU 03914 for technical questions, please call 1-800-444-3353. presser bAr pArts list description Amt. req. Page 20...
  • Page 21 presser bAr AsseMbly drAwing Page 21 SKU 03914 for technical questions, please call 1-800-444-3353.
  • Page 22 ref. part no. SKU 03914 for technical questions, please call 1-800-444-3353. feed MecHAnisM pArts list description Amt. req. Page 22...
  • Page 23 feed MecHAnisM AsseMbly drAwing Page 23 SKU 03914 for technical questions, please call 1-800-444-3353.
  • Page 24 ref. part no. SKU 03914 for technical questions, please call 1-800-444-3353. lubricAtiOn pArts list description Amt. req. Page 24...
  • Page 25 lubricAtiOn AsseMbly drAwing Page 25 SKU 03914 for technical questions, please call 1-800-444-3353.
  • Page 26 Oil reserVOir & Knee lifter AsseMbly drAwing And pArts list ref. part no. SKU 03914 for technical questions, please call 1-800-444-3353. description Amt. req. Page 26...
  • Page 27 MAcHine HeAd AccessOries pArts list And AsseMbly drAwing ref. part no. SKU 03914 for technical questions, please call 1-800-444-3353. Amt. description req. Page 27...
  • Page 28 bObbin winder & tHreAd stAnd unit pArts list ref. part no. SKU 03914 for technical questions, please call 1-800-444-3353. description Amt. req. Page 28...
  • Page 29 bObbin winder & tHreAd stAnd unit AsseMbly drAwing Page 29 SKU 03914 for technical questions, please call 1-800-444-3353.
  • Page 30 Limited 90 day warranty Harbor Freight Tools 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 ninety days from the date of purchase.