Table Of Contents - Necchi Supernova Instructions Manual

Table of Contents

Table Of Contents2
Tools And Necessary Accessories8
Suggestions For The Mechanics8
Using The Correct Needle9
Correct Threading Of The Supernova When Using One Needle10
Threading Of The Supernova When Using Two Need Les (Twin Needle)11
To Disconnect The " Automatic12
Changing From Automatic Sewing To Straight Sewing13
Swing The Cam Disengaging Lever13
Cleaning Of Shuttle Race And Feed Dog13
Figure 815
Adjusting The Thread Tensions16
Figure 1317
Cleaning18
Lubrication19
Adjusting The Movements Of The Various Groups Of Parts In Relation To Each Other (Timing The Machine)20
Adjustment - Height Of The Needle Bar21
Timing Of Shuttle And Needle Bar In The Supernova21
Figure 1622
False Needle Diagram23
Figures 18-1923
Timing Procedure24
Needle Eye In Correct Position25
Needle Eye In Incorrect Position25
Figures 22, 2326
Centering The Needle In Relation To The Race Cover Plate27
Figure 2528
Adjustment Of The Shuttle Carrier Shaft In The Supernova31
Checking The Timing Of The Shuttle And The Needle32
If The Machine Sews Correctly33
Timing Of Feed Dog And Needle Bar34
Timing Of Feed Dog And Needle Bar With The Help Of The Gauge 10-336
Timing The Regulating Shaft Of The Stitching Length Regulating Knob37
Timing Of The Regulating Shaft A/13 With The Aid Of The Gauge 10-640
Remove Top Cover41
Timing Of The Automatic Control Eccentric A 8524144
Fig. 39).44
Timing Of The Zig-Zag Movement And The Movement Of The Needle Bar46
Copyright47
How To Dismantle The Upper Group Of The Zig-Zag Mechanism51
Assembly For Zig-Zag Width Control "17"53
How To Assemble The Upper Group Of The Zig-Zag Mechanism54
Zag Mechanism58
Minor Adjustments In The Upper Group Of The Zig-Zag Mechanism59
Test The Strength Of Spring "A"60
The Feed Dog62
Adjustment Of Any Looseness In The Feeding Mechanism63
Alignment Of Feed Dog In Relation To The Slots In The Needle Plate66
How To Check The Alignment Between The Underside Of The Presser Foot And The Teeth Of The Feed Dog68
Of The Presser Foot And The Teeth Of The Feed Dog68
Minor Adjustment Of The Feed Dog70
How To Control The Pressure Of The Presser Foot70
Positioning Of Presser Bar And Presser Foot71
Height Of Presser Foot72
Upper Thread Tension74
The Thread Take-Up Spring (Check Spring) Of The Upper Tension75
Positioning Of The Tension Mechanism In Relation To The Hole In The Arm77
Tension Of The Lower Thread (Tension Of The Bobbin Case)78
The Oscillating Shuttle79
To Remove The Feed Eccentric Connecting Rod No. D 85506 And The Connecting Rods Of The Stitch Length Regulating Mechanism82
How To Remove The Stitch Length Regulating Knob And The Regulating Shaft84
How To Reassemble The Stitch Length Regulating Knob And Regulating Shaft84
Figure 7685
How To Reassemble The Feed Eccentric Rod No. D 85506 And The Connecting Rods Of The Stitch Length Regulating Mechanism87
General Rules With Reference To Important Adjustment Of Stitch Length Regulating Knob And Regulating Shaft88
Adjustment Of The Friction Of The Stitch Length Regulating Knob89
Zero Position Of The Stitch Length Regulating Knob90
Adjustment Of The Eccentric No. 85663 On The Needle Positioning Lever No. 8566294
Adjustment Of The Axial Play (End Play) Of The Upper Shaft95
Adjustment Of The Contact Fingers No. A 26/1/23 And No. A 26/1/13 Which Regulate The Position Of The Needle That Of The Zig-Zag Width Regulating Lever97
Adjustment Of The Feed Regulating Rod (Which Regulates The "Automatic" Length Of The Stitch) No A 26/3/21100
Troubleshooting103
Adjustment Of The Number Of Impulses For Each Turn Of The Cam Axle104
Assembling The Parts Underneath The Mounting Plate No. C(A26/1/1) Of The Automatic Device108
To Replace The Mounting Plates116
How To Replace The Motor Brushes118
Oiling Of Motor121
Belt Slips121
Motor Is Weak121
Motor Gets Too Hot121
Motor Smokes Or Emits A Burning Smell122
Motor Hums While Machine Is Not Sewing122