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Harbor Freight Tools 91500, Assembly And Operating Information

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Harbor Freight Tools 91500 Assembly And Operating Information Download Page 19

Troubleshooting Guide:

Condition Reason 

Method 

of 

Adjustment 

Fabric is not feeding. 

Insufficient Foot 
Controller pressure. 

Increase pressure on 
Foot Controller. 

Needle breaks. 

Needle not inserted properly. 
 
Fabric being pulled too fast. 
 
Loose Needle Set Screw. 

Insert Needle correctly or 
replace with correct Needle. 
Do not pull fabric by hand.  
Use hand only to guide fabric. 
Tighten Set Screw firmly. 

Thread breaks. 

Incorrect threading. 
Bent or damaged Needle. 
Thread tension too tight. 
Thread tangled. 
Needle inserted incorrectly. 

Thread machine correctly. 
Replace Needle. 
Adjust tension. 
Thread correctly. 
Insert Needle correctly. 

Stitches skip. 

Bent Needle or Needle 
point damage. 
Needle set loosely. 
Incorrect threading. 
Wrong Needle used. 
Insufficient Foot 
Controller pressure. 

Replace Needle. 
 
Set Needle firmly in position. 
Thread machine correctly. 
Use correct Needle. 
Increase pressure on 
Foot Controller. 

Stitches are irregular. 

Thread tension not balanced. 

Adjust tension. 

Fabric puckers. 

Thread tension too tight. 
Threading incorrect or tangled. 
Differential Feed Dial at 
wrong ratio. 

Adjust tension. 
Rethread machine. 
Set value of Differential Feed 
Dial at 0.7-N. 

Machine does not operate. 

Power Cord Plug not connected. 

Connect Power Cord Plug to a 
120 volt, grounded, electrical 
receptacle. 

SKU 91500

PAGE 19

Thread And Needle Suggestions For Certain Cloth Types:

Muslin,

Denim

Knit

Wool (woven, knit)

Cloth

Thread

Needle

Summary of Contents for 91500

Page 1: ...arborfreight com TO PREVENT SERIOUS INJURY READ AND UNDERSTAND ALL WARNINGS AND INSTRUCTIONS BEFORE USE Copyright 2004 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 please call 1 800 444 3353 ...

Page 2: ...heck to make sure all parts shown on the Parts Lists on pages 21 through 38 are included If any parts are missing or broken please call Harbor Freight Tools at the number shown on the cover of this manual as soon as possible UNPACKING SKU 91500 PAGE 2 Item Description Electrical Requirements 120 V 60 Hz Power Switch Type Rocker Power Cord Length 6 Feet Power Plug Type 2 Prong Double Insulated Sewi...

Page 3: ...verse the plug If it still does not fit contact a qualified electrician to install a polarized outlet Do not change the plug in any way Double insulation eliminates the need for the three wire grounded power cord and grounded power supply system 6 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 ...

Page 4: ...o the job better and safer at the rate for which it is designed There are certain applications for which this Sewing Machine was designed Do not use this Sewing Machine to do the work of a larger Sewing Machine Do not use this product for a purpose for which it was not intended 18 Do not use the Sewing Machine if the Power Switch does not turn it on or off Any electric appliance that cannot be con...

Page 5: ...must be performed only by qualified repair personnel Service or maintenance performed by unqualified personnel could result in a risk of injury 25 When servicing an appliance use only identical replacement parts Follow instructions in the Inspection Maintenance And Cleaning section of this manual Use of unauthorized parts or failure to follow maintenance instructions may create a risk of electric ...

Page 6: ...n one appliance add the name plate amperes and use the sum to determine the required minimum cord size See Figure B 6 If you are using an extension cord outdoors make sure it is marked with the suffix W A 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 Always replace a damaged extension cord or have it repa...

Page 7: ...connect the Sewing Machine from its electrical outlet before performing any services maintenance or cleaning such as leaving the work area moving the machine from one location to another changing Needles Thread cleaning debris from the unit etcetera Never attempt to remove material stuck in the moving parts of the Sewing Machine while it is plugged in Never perform layout assembly or setup work on...

Page 8: ...ce to or failure of the pacemaker 14 WARNING The warnings precautions and instructions discussed in this instruction manual cannot cover all possible conditions and situations that may occur It must be understood by the operator that common sense and caution are factors which cannot be built into this product but must be supplied by the operator PRODUCT FEATURES Machine With Cover Open UPPER KNIFE...

Page 9: ...the Moveable Sewing Table 13A from the Needle Approacher 30A by pulling the Table to the left Then lift the Table upward and off the Sewing Machine See Figure E 3 Turn the Hand Wheel 9F toward you until the Needle Holder 21B is at its high est position Loosen the two Setting Screws 23B with the Hex Driver 7G Insert two new Needles 26B into the Needle Holder as far as they will go with their flat s...

Page 10: ...each Tension Dial See Figure G WIRE HOOK UPPER THREAD GUIDE 38A FRONT COVER PLATE 67A TENSION DIAL 55A THREAD BRACKET ASSY 9A THREAD SPOOL NOT INCLUDED THREAD RACK BRACKET 1A FIGURE G 7 Open the Looper Cover 24A by pushing it as far to the right as it will go Then pull it downward See Figure D 8 When the Looper Cover 24A is opened the interior mechanisms of the Sewing Machine are exposed As an aid...

Page 11: ...91500 PAGE 11 FIGURE H LEFT LOOPER 17C RIGHT LOOPER 30C NEEDLE 26B NEEDLE 26B FRONT VIEW WITH LOOPER COVER 24A OPEN SPOOL 4 TURQUOISE SPOOL 3 GREEN SPOOL 1 RED SPOOL 2 YELLOW 4 3 4 3 2 2 2 2 2 2 1 1 1 1 1 1 ...

Page 12: ... pressure caused by working on it 2 Insert the Pedal Switch Plug into the machine socket Then set the Pedal Switch Assembly 33F on the floor under the table See Figure I 3 Plug the Power Wire 29F into the nearest 120 volt grounded electrical receptacle See Figure I 4 NOTE Press on the Pedal Switch Assembly 33F strongly and the sewing speed increases Press on the Pedal Switch Assembly lightly and t...

Page 13: ...hread See Figure G PRESSER FOOT ASSY 1B PRESSER FOOT SPANNER 9B FIGURE J SKU 91500 PAGE 13 To Change Threads 1 To change threads first cut each thread near the Thread Spool not included Remove the old spool and replace with a new one Tie the end of the new thread to the end of the old one using a small knot that will pass easily through the machine Raise the Presser Foot Spanner 9B Turn the Tensio...

Page 14: ...stretching turn the Differential Feed Adjusting Stud 93E upward or downward See Figure L FIGURE K Sewing Machine With Cover Open DIFFERENTIAL FEED ADJUSTING STUD 93E To Replace Adjust The Upper Knife 1 CAUTION Make sure the Power Switch 18F is in its OFF position and the Power Wire 29F is unplugged from its electrical outlet before performing this procedure Use caution when handling or working aro...

Page 15: ...of the Key 3g into the slot c Remove the Screw 1D and old Upper Knife 2D Install the new or resharp ened Knife with the Screw 1D near the middle of the slot in the Knife Tighten the Screw enough to hold the Knife while allowing it to slide See Figure M d Turn the Setting Ring 14D in the direction opposite the one shown in Figure M When the blade is lined up properly it should snap back to the left...

Page 16: ...sing only the left or right Needle and three threads When using only one Needle make sure to remove the other Needle See Figure N and Figure O SKU 91500 PAGE 16 REV 12 04 2 Set the Upper Knife 2D in its non operating position as described in steps 4 a and 4 b under To Replace Adjust the Upper Knife on page 15 See Figure M 3 Loosen the Screw 30D and remove the Lower Knife Pressure Plate 29D and the...

Page 17: ...fore performing this procedure See Figure D and Figure I 4 To perform roll hemming set the Feed Adjusting Knob 21E to 2 or F See Figure D 5 Turn the Hand Wheel 9F toward you until the Needle 26B is at its highest point See Figure D and Figure F 6 Lift the Presser Foot Assembly 1B See Figure J 7 Remove the Moveable Sewing Table 13A See Figure D 8 Unscrew the two Needle Plate Screws 5E 6E and remove...

Page 18: ...n the left edge of the Lower Knife Bracket 27D with the M mark on the Hem Needle Plate See Figure M 12 NOTE Make sure the Lower Knife 28D is not in contact with the edge of the Hem Needle Plate 3E When performing rolled hem stitching make sure to adjust the thread tension correctly At the start of sewing slightly pull the end of the chain off so it will not be entangled in the stitch See Figure M ...

Page 19: ...rt Needle correctly Stitches skip Bent Needle or Needle point damage Needle set loosely Incorrect threading Wrong Needle used Insufficient Foot Controller pressure Replace Needle Set Needle firmly in position Thread machine correctly Use correct Needle Increase pressure on Foot Controller Stitches are irregular Thread tension not balanced Adjust tension Fabric puckers Thread tension too tight Thre...

Page 20: ...Machine 5 Once clean lubricate all moving parts with a light Sewing Machine oil not included 6 When storing keep the Sewing Machine covered with a cloth cover not included 7 To change the 120 volt Lamp 32F in the Sewing Machine pull out and remove the left side section of the Lamp Cover 62A to expose the Lamp CAUTION Make sure the Lamp is completely cool before touching Unscrew and remove the old ...

Page 21: ...are listed and shown for illustration purposes only and are not available individually as replacement parts NOTE When ordering parts from Parts List A and Assembly Diagram A include the suffix A behind the part number example 1A Thread Rack Bracket SKU 91500 PAGE 21 ...

Page 22: ...shown for illustration purposes only and are not available individually as replacement parts NOTE When ordering parts from Parts List A and Assembly Diagram A include the suffix A behind the part number example 1A Thread Rack Bracket SKU 91500 PAGE 22 ...

Page 23: ...embly Diagram A include the suffix A behind the part number example 1A Thread Rack Bracket ASSEMBLY DIAGRAM A NOTE Some parts are listed and shown for illustration purposes only and are not available individually as replacement parts SKU 91500 PAGE 23 ...

Page 24: ...nd shown for illustration purposes only and are not available individually as replacement parts NOTE When ordering parts from Parts List A and Assembly Diagram A include the suffix A behind the part number example 1A Thread Rack Bracket SKU 91500 PAGE 24 ...

Page 25: ...sted and shown for illustration purposes only and are not available individually as replacement parts NOTE When ordering parts from Parts List B and Assembly Diagram B include the suffix B behind the part number example 1B Presser Foot Assembly SKU 91500 PAGE 25 ...

Page 26: ...hown for illustration purposes only and are not available individually as replacement parts NOTE When ordering parts from Parts List B and Assembly Diagram B include the suffix B behind the part number example 1B Presser Foot Assembly SKU 91500 PAGE 26 ...

Page 27: ... available individually as replacement parts SIDE COVER BASE PLATE ACCESSORY BOX EXTENSION TABLE MOTOR COVER THREAD GUIDE BAR SPOOL STAND NOTE When ordering parts from Parts List C and Assembly Diagram C include the suffix C behind the part number example 1C Left Looper Crank SKU 91500 PAGE 27 ...

Page 28: ... shown for illustration purposes only and are not available individually as replacement parts NOTE When ordering parts from Parts List C and Assembly Diagram C include the suffix C behind the part number example 1C Left Looper Crank SKU 91500 PAGE 28 ...

Page 29: ...tration purposes only and are not available individually as replacement parts NOTE When ordering parts from Parts List D and Assembly Diagram D include the suffix D behind the part number example 1D Screw SKU 91500 PAGE 29 MACHINE FRAME LOWER KNIFE STITCH PLATE ...

Page 30: ...ed and shown for illustration purposes only and are not available individually as replacement parts NOTE When ordering parts from Parts List D and Assembly Diagram D include the suffix D behind the part number example 1D Screw SKU 91500 PAGE 30 ...

Page 31: ...llustration purposes only and are not available individually as replacement parts MAIN SHAFT UPPER KNIFE NOTE When ordering parts from Parts List E and Assembly Diagram E include the suffix E behind the part number example 1E Needle Plate SKU 91500 PAGE 31 ...

Page 32: ... Assembly Diagram E include the suffix E behind the part number example 1E Needle Plate PARTS LIST E CONT NOTE Some parts are listed and shown for illustration purposes only and are not available individually as replacement parts SKU 91500 PAGE 32 ...

Page 33: ...and shown for illustration purposes only and are not available individually as replacement parts NOTE When ordering parts from Parts List E and Assembly Diagram E include the suffix E behind the part number example 1E Needle Plate SKU 91500 PAGE 33 ...

Page 34: ...d and shown for illustration purposes only and are not available individually as replacement parts NOTE When ordering parts from Parts List E and Assembly Diagram E include the suffix E behind the part number example 1E Needle Plate SKU 91500 PAGE 34 ...

Page 35: ...arts List E and Assembly Diagram E include the suffix E behind the part number example 1E Needle Plate ASSEMBLY DIAGRAM E CONT NOTE Some parts are listed and shown for illustration purposes only and are not available individually as replacement parts ...

Page 36: ...on purposes only and are not available individually as replacement parts HAND WHEEL STITCH LENGTH DIAL NOTE When ordering parts from Parts List F and Assembly Diagram F include the suffix F behind the part number example 1F Main Shaft Left Bushing SKU 91500 PAGE 36 ...

Page 37: ...own for illustration purposes only and are not available individually as replacement parts NOTE When ordering parts from Parts List F and Assembly Diagram F include the suffix F behind the part number example 1F Main Shaft Left Bushing SKU 91500 PAGE 37 ...

Page 38: ...llustration purposes only and are not available individually as replacement parts NEEDLE BAR PRESSER BAR PRESSER FOOT NOTE When ordering parts from Parts List G and Assembly Diagram G include the suffix G behind the part number example 1G Bending Tweezers SKU 91500 PAGE 38 ...

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