SEWING MACHINE 45 / 21 STITCH 90715 ASSEMBLY AND OPERATING INSTRUCTIONS ® 3491 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.
SPECIFICATIONS Item Pow er C onsum ption Pow er C ord Sew ing F unctions Needle Positions Fea tures Acc essories W eight O verall D im ensions D escrip tion 120 VA C, 60 Hz T wo prong, polarized, 6 feet, UL lis ted, double ins ulated 45 selec table stitch functions and 21 built-in stitches, forward and revers e by select lever; button func tion with built-in, one s tep button holer Left to extrem e rig ht - B obbin w inder - S titch length and width control - A djustable thread and tension control - B ui
Electrical Safety 4. Avoid body contact with grounded surfaces such as pipes, radiators, ranges, and refrigerators. There is an increased risk of electric shock if your body is grounded. 5. Do not expose power machines to rain or wet conditions. Water entering a power machine will increase the risk of electric shock. 6. Grounded machines must be plugged into an outlet properly installed and grounded in accordance with all codes and ordinances.
15. Do not overreach. Keep proper footing and balance at all times. Proper footing and balance enables better control of the power tool in unexpected situations. 16. Use safety equipment. Always wear eye protection. Machine Use and Care 17. Do not force the machine. Use the correct machine for your application. The correct machine will do the job better and safer at the rate for which it is designed. 18. Do not use the power machine if the Power Switch does not turn it on or off.
3. Avoid unintentional starting. Make sure you are prepared to begin work before turning on the Sewing Machine. 4. Maintain a safe working environment. Keep the work area well lit. Make sure there is adequate surrounding workspace. Always keep the work area free of obstructions, grease, oil, trash, and other debris. Do not use a power machine in areas near flammable chemicals, dusts, and vapors. Do not use this product in a damp or wet location. 5. Do not force the Sewing Machine.
C. Never operate this appliance if it has a damaged cord or plug, if it is not working properly, if it has been dropped or damaged, or dropped into water. Take the product to a certified service technician for examination, repair, electrical or mechanical adjustment. D. Never operate this appliance with any air openings blocked. Keep ventilation openings free from the accumulation of lint, hair, loose clothes and dust. E. Never drop or insert any object into any opening. F. Do not use outdoors. G.
GROUNDING WARNING! Improperly connecting the grounding wire can result in the risk of electric shock. Check with a qualfified 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 prong from the plug. Do not use the tool if the power cord or plug is damaged. If damaged, have it repaired by a service facility before use.
5. If you are using one extension cord for more than one tool, add the nameplate amperes and use the sum to determine the required minimum cord size. (See Table below.) 6. If you are using an extension cord outdoors, make sure it is marked with the suffix “WA” (“W” in Canada) to indicate it is acceptable for outdoor use. 7. Make sure your extension cord is properly wired and in good electrical condition.
UNPACKING When unpacking, check to make sure that all the parts are included. Refer to the Accessories listed below and the Controls and Indicators section. If any parts are missing or broken, please call Harbor Freight Tools at the number on the cover of this manual as soon as possible. Accessories 1. 2. 3. 4. 5. 6. 7. 8. 9. SKU 90715 Buttonhole Foot Zipper Foot Button Sewing Foot Needle Pack (3 pcs.) Bobbins (3 pcs.
OPERATING INSTRUCTIONS Controls and Indicators 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. SKU 90715 Bobbin Winding Assy.
Sewing Steps Follow these basic steps to setup the sewing machine. Refer to the illustration on the previous page to locate the components referred to below. 1. Set the Sewing Machine on a table with a smooth surface. 2. Select and install the desired needle for the material to be sewn (See below). 3. Place the spool of thread onto the Spool Holder (2) and route the thread from the spool holder down to, and through the needle (See page 11). 4.
Spool Threading 1. Raise the Presser Foot with the Presser Foot Lever (4). 2. Turn the Balance Wheel (9) counterclockwise to raise the needle to its highest position. 3. Place a spool of thread on the horizontal spool pin and press a spool holder onto the spool pin to hold the thread spool firmly in place. 4. Route the thread through the thread take-up lever from left to right, and down to the needle. Horizontal Spool Pin Thread Take-up Lever Spool Holder (4) Using the Needle Threader 1.
Bobbin Placement and Threading 1. Turn the Balance Wheel (9) counterclockwise to raise the needle to its highest position. 2. Raise the Presser Foot with its Lever (4). 3. Remove the Extension Table (6), and then the shuttle cover (located on front of the free arm). 4. Remove the Bobbin Case by grasping the Bobbin Case Latch (A) and pulling it out. See illustration below. 5. Unwind about four inches of thread from the full Bobbin and insert the Bobbin into the Bobbin Case. 6.
Bobbin Winding 1. Change the Clutch Release Switch (10) from the needle mark to the bobbin mark. 2. With a spool of thread already on the horizontal spool pin, route the thread through the guide to the bobbin as shown below. 3. Place the bobbin onto the bobbin winder shaft (B) and slide the shaft to the right. Turn the bobbin clockwise until the spring (C) on the shaft slides into the slit on the bobbin. 4.
Changing the Presser Foot 1. Turn the Balance Wheel (9) counterclockwise to raise the needle to its highest position. 2. Raise the Presser Foot with its Lever (4). 3. Release the Foot by raising its lever (A) located at the back of the holder. 4. Place a different Presser Foot on the needle plate so that the bar on the Presser Foot is in line with the slot on the shank (B). 5. Lower the Presser Foot lever to fix the Presser Foot onto the shank.
Selecting a Stitch Pattern and Stitch Length To select a stitch, turn the Pattern Selection Knob (11). The selection knob may be turned in either direction. All stitches are preset in width, therefore, the stitch length is the only other necessary adjustment. 1. Turn the Balance Wheel (9) counterclockwise to raise the needle to its highest position. 2. Turn the Pattern Selection Knob to select the desired stitch pattern.
Buttonhole Sewing 1. Select setting No. 1 using the Pattern Selection Dial (11). 2. Turn the Stitch Length Dial (3) to F-1.5. 3. Replace the Presser Foot with the Buttonhole Foot. 4. Mark the position of the buttonhole on the fabric using tailor’s chalk. 5. Draw up the lower thread. 6. Lower the Presser Foot, aligning the marks on the foot (B) with the marks on the fabric (A). 7. Open the button plate (C) and insert the button as shown below. 8.
Button Sewing 1. Measure the distance between the button holes and select the appropriate pattern number using the Pattern Selection Dial (11). Distance between holes 1.5 mm (1/16”) Pattern No. 4 3.5 mm (9/16”) 5 5 mm (13/64”) 6 2. Change the Presser Foot to the Button Sewing Foot. 3. Place the darning plate on the needle plate. 4. Place a button between the foot and the fabric, aligning the thread holes in the button with the machine needle.
INSPECTION, MAINTENANCE, AND CLEANING WARNING! Make sure the Power Switch of the Sewing Machine is in its “OFF” position and that the machine is unplugged from its electrical outlet before performing any inspection, maintenance, or cleaning procedures. General 1. Any repairs must be completed by an experienced sewing machine technician. 2. Before each use, inspect the general condition of the Sewing Machine.
Oiling Points Cleaning Shuttle 1. Raise the needle to its highest position. 2. Open the shuttle cover on the front of the free arm. 3. Take out the bobbin case by opening its latch lever (B) and pulling it out from the shuttle race. 4. Slide the latch levers out from the retaining ring (A) and remove. 5. Remove the hook by grasping the center post of the hook and pulling it out. 6.
Feed Dogs 1. Remove the needle plate using a coin to unscrew the screws. 2. Clean the upper part of the feed dogs and shuttle race body with a brush. PLEASE READ THE FOLLOWING CAREFULLY THE MANUFACTURER AND/OR DISTRIBUTOR HAS PROVIDED THE PARTS DIAGRAM IN THIS MANUAL AS A REFERENCE TOOL ONLY.
PART LISTS AND ASSEMBLY DRAWINGS NOTE: Some par ts are listed and shown for illustration purposes only and are not available individually as replacement parts.
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2 - Cover SKU 90715 Page 24
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3 - Needle Bar Mechanism SKU 90715 Page 26
4 - Cloth Presser Mechanism SKU 90715 Page 27
5 - Buttonhole Regulator Mechanism SKU 90715 Page 28
6 - Driving Mechanism SKU 90715 Page 29
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7 - Thread Adjusting Mechanism SKU 90715 Page 31
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8 - Stitch Length Adjusting Mechanism SKU 90715 Page 33
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9 - Pattern Selection Mechanism SKU 90715 Page 35
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10 - Feed Mechanism SKU 90715 Page 37
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11 - Reverse Feed Mechanism SKU 90715 Page 39
12 - Shuttle Lower Shaft Mechanism SKU 90715 Page 40
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13 - Accessories 13-16 PARTS LIST ITEM # DESCRIPTION 12-15 Bobbins (3) 13-1.0 Seam Pressure Foot 13-2.0 Cloth Guard Adjusting Plate 13-3.0 Buttonhole Pressure Foot 13-4.0 Straight Serving Pressure Foot 13-5.0 Zipper Pressure Foot 13-6.0 Button Pressure Foot 13-7.0 Thread Bushing 13-8.0 Thread Dial ITEM # DESCRIPTION 13-9.