SunStar SC 7900-Series User Manual page 5

7. DETAILED ADJUSTMENTS --------------------------------------------------------------------- 31
1) NEEDLE THREAD TENSION MODIFICATION ----------------------------------------------------------- 31
2) LOOPER THREAD TENSION MODIFICATION ----------------------------------------------------------- 32
3) UPPER THREAD TENSION MODIFICATION-------------------------------------------------------------- 33
4) NEEDLE HEIGHT SETTING------------------------------------------------------------------------------------ 33
5) UPPER THREAD RETAINER ----------------------------------------------------------------------------------- 34
6) MODIFICATION OF NEEDLE AND LOOPER TIMING-------------------------------------------------- 35
7) STANDARD POSITION OF NEEDLE GUARD ------------------------------------------------------------- 36
8) FEED DOG HEIGHT SETTING--------------------------------------------------------------------------------- 37
9) EXCHANGE OF PRESSER FOOT ----------------------------------------------------------------------------- 38
10) EXCHANGE OF PRESSER FOOT SPRING PLATE A --------------------------------------------------- 40
11) BLADE EXCHANGE AND ADJUSTMENT---------------------------------------------------------------- 41
8. AIR-COMPRESSED THREAD TRIMMER (OPTIONAL) MANUAL ----------------- 43
1) CONSIDERATIONS BEFORE USING------------------------------------------------------------------------- 43
2) MODEL NUMBER SETTING ----------------------------------------------------------------------------------- 43
3) SENSOR SETTING METHOD ---------------------------------------------------------------------------------- 43
4) RELATED PARAMETER----------------------------------------------------------------------------------------- 45
5) THREAD TRIMMING MODE SETTING--------------------------------------------------------------------- 45
6) THREAD TRIMMING RANGE SETTING ------------------------------------------------------------------- 47
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