Nakajima 281LY-B - Default Chapter; Table of Contents

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CONTENTS
page
CAUTIONS BEFORE OPERATING THE MACHINE ....... 2
CAUTIONS WHEN OPERATING THE MACHINE .......... 2
1. SPECIFICATION ............................................................. 2
2. PREPARATION BEFORE OPERATING
THE MACHINE ................................................................ 3
2-1 SETTING UP THE MACHINE ................................................ 3
2-2 CONNECTING THE MACHINE WITH MOTOR .......................... 3
2-3 SYNCHRONIZER INSTALLATION .......................................... 3
2-4 UPPER AND LOWER NEEDLE STOPPING POSITIONS ............... 4
3. CAUTION IN USE .......................................................... 4
3-1 LUBRICATION ................................................................... 4
3-2 ADJUSTING OF THE OILING TO THE HOOK PART .................. 4
3-3 INSTALLING THE BELT COVER .. · .... · .... · ...... · .... · .. · .... ·.......... 5
4. HOW TO SET THE MACHINE .................................. 5
4-1 SETTING THE NEEDLE ....................................................... 5
4-2 WINDING THE BOBBIN THREAD .......................................... 6
4-3 THREADING THE UPPER THREAD ....................................... 6
4-4 ADJUSTING THE STITCH LENGTH AND REVERSE FEED ......... 7
4-5 THREAD TENSION ............................................................. 7
4-6 THE NEEDLE THREAD TENSION .......................................... 7
4-7 ADJUSTING THE BOBBIN THREAD TENSION ......................... 8
4-8 THREAD TAKE UP SPRING ................................................. 8
4-9 ADJUSTING THE PRESSER OF PRESSED FOOT ....................... 8
4-10 TIMING OF NEEDLE AND ROTATING HOOK .......................... 8
4-11 ADJUSTING THE HEIGHT OF FEED DOG ............................... 9
4-12 ADJUSTING THE HEIGHT OF PRESSER FOOT
AND FEEDING FOOT · ................ · .... · .... · ................ · .. · .. · .. ·.... 9
4-13 ALTERNATE STROKE AMOUNT OF
PRESSER FOOT AND FEEDING FOOT .................................. · 9
4-14 ADJUSTING THE LONGITUDIAL POSITION
OF THE NEEDLE BAR FRAME ............................................. 10
4-15 POSITION OF THE REVERSE FEED SOLENOID ....................... 10
4-16 HOME POSITION OF THE ROTARY KNIFE ............................. 10
4-17 ADJUSTING THE THREAD TRIMMING CAM ........................... 11
4-18 HOW TO MANUALLY OPERATE THE THREAD TRIMMER ........ II
4-19 HOW TO REPLACE THE KNIVES .......................................... 11
4-20 AUXILIARY THREAD TENSION CONTROLLER ........................ 12
4-21 PRESSURE OF THE FIXED KNIFE ......................................... 12
4-22 STITCH LENGTH AND SPEED .............................................. 12
5. PHENOMENA, REASON AND
ITS CORRECTIVE MEASURE AT
THE THREAD TRIMMING .......................................... 13
6. COMPONENT PARTS ................................................... 14
6-1 MACHINE PARTS ............................................................... 14
6-2 LIST OF PARTS · ................................................................ 18
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From the library of: Superior Sewing Machine & Supply LLC