Singer CLASS 99 instruction manual To Regulate Needle Thread Tension

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Class 99 & 99K

To Regulate Needle Thread Tension

The tension on the needle thread can be tested only when the presser foot is down.

The numerals "0" to "9" dial X, Fig. 29 indicate the different degrees of tension that can be obtained. The numbers do not denote size of thread or amount of tension.

When the tension has been correctly set, note the number at the indicator line Y, Fig. 29 so that this setting may be regained should the tension be altered for special work.

Fig. 29 To Regulate Needle Thread Tension

To increase tension, turn the thumb nut Z, Fig. 29 gradually to the right (clockwise) until the required tension is obtained. Each higher number denotes increased tension.

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Contents Class 99 & 99K Sewing Machines Sewing Suggestions Table of Contents Instructions for Operating the MachineLight Electrical InformationTo Insert New Bulb To Remove BulbIf the Machine is Electrically Operated To Operate the Hand Machine If the Machine is Hand OperatedBelt Shifter If the Machine is Treadle OperatedProtection Against Rust Damage To Oil the Machine and Stand Class 99 & 99K Needles and Thread To Set the Needle Upper Threading To Remove the Bobbin To Wind the Bobbin Class 99 & 99K To Replace the Bobbin Class 99 & 99KTo Prepare for Sewing To Start Sewing To Start SewingTo Remove the Work To Turn a CornerBasting To Sew Bias SeamsTo Reverse the Direction of Feed To Regulate Length of StitchThread Tension To Regulate Pressure on Presser FootTo Regulate Needle Thread Tension To Regulate Needle Thread TensionTo Regulate Bobbin Thread Tension Bobbin Thread Tension Table of Contents Previous Page NextTo Adjust the Bobbin Thread Tension To Adjust the Needle Thread TensionTo Adjust the Tension on the Thread Take-up Spring To Remove the Bobbin Case To Clean the Stitch Forming MechanismRaising the Bobbin Case Latch Removing the Bobbin Case To Replace Bobbin CaseBreaking of Needles Might be Caused by To Replace Slide PlateSewing Suggestions Skipping of Stitches Might be Caused by Breaking of Needle Thread Might be Caused byBreaking of Bobbin Thread Might be Caused by Class 99 & 99K Hemming Foot HemmerApplications Hemmed Seams Lace Applied over Hem Hemming with LaceInserting the Binding BinderAdjustment and Operation Binder Outside Curves Binding Curved EdgesInside Curves Shirring Gathering FootRuffler Adjusting PointsGathering Forming and Attaching a Ruffle in One Operation Group Pleating PleatingSeam Guide Zipper Foot Skirt Zipper Corded Welting Corded Seams Blind Stitcher Fashion AidsButtonholer Bias Gauge Joining Lace and Insertion EDGE-STITCHERTucking French SeamsQuilter Wide Hemming Adjustable HemmerTo make hems from 3/16 to 15/16 inch wide Tucker Darning or Embroidering Needles Darning or Embroidering