TABLE OF CONTENTS
A.General directions and recommendations
B. Recommendations
C. Mechanical sewing disorders
D. Adjustment of the automatic tension unit
E. Position of program selection - display drum indicator and display window
F. Position of display drum indicator and upper looper shifting cam
G. Adjustment of the Chain looper tension dial
H. Gauge for the after - sales service
1. Removing Machine Base and Back Cover
2. Removing Front Cover and Mounting Covers
3. Angular position of balance weights and position of eccentrics
4. Height and alignment of cloth presser bar
5. Height and orientation of needle bar in relation to the needle plate holes
6. Height - clearance - angular position of lower looper
7. Clearance of needle guards
8. Timing of lower looper
9. Angular position of upper looper
10. Clearance and timing of upper looper to lower looper
11. Chain looper : angular position - clearance - orbital timing - clearance of
chain needles guards
12. Chain looper thread take up rotary cam
13. Height of feed dog
14. Upper knife and vertical feed timing
15. Horizontal feed timing against chainstitch needle
16. Differential feed
17. Position of fixed cutter and cutting width dial setting
18. Position of loopers threads take up lever
19. Safety device - Presser foot
20. Top Cover device
ANNEX
Tools for setting SL/DF Dials
Setting positions of SL/DF Dials
Clearance between Feed Dog and Needle Plate
Trouble shooting - Cover Hems
Cover Hem stitch formations
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