Table des Matières
Publicité
SKIPPING OR IRREGULAR STITCHES
Incorrect threading ............................................................ 34-72
Incorrect thread tensions ................................................... 82-86
Needle problems ––poor quality, bent or dull ........................ 32
Needles not inserted correctly ................................................ 24
Do not pull on fabric, guide it gently ....................................... 76
Incorrect presser foot ....................................................... 30, 56
Needle plate or foot not attached correctly .......................... 104
Cutting width dial not set correctly ......................................... 24
Thread guide pole not extended/positioned correctly ............ 14
Do not lift presser foot at end of seam ................................... 76
Incorrect pressure used for heavier fabrics ..................... 74, 98
BREAKING THREADS
Incorrect threading ............................................................ 34-72
Incorrect thread tensions ................................................... 82-86
Thread tangled or knotted ................................................. 34-36
When re-threading lower looper, needle eye must be
unthreaded before re-threading looper ............................... 80
Needle plate or foot not attached correctly .......................... 104
Thread guide pole not extended/positioned correctly ............ 14
Use the foam pads to avoid thread tangling .......................... 14
CHAINSTITCH OR COVER HEM THREAD BREAKS
Thread tension(s) too high ................................................ 82-86
Stitch length set too short, SL must be higher than 2.5 ......... 90
Needle problems – poor quality, bent or dull ......................... 32
Needle not inserted correctly ................................................. 24
When re-threading lower looper, needle eye must be
unthreaded before re-threading looper ............................... 80
FABRIC PUCKERS
Needle tension(s) too high ................................................ 82-86
Stitch length too long .............................................................. 90
Thread too heavy ............................................................... 32-36
Foot pressure not set correctly for fabric ......................... 74, 98
Needle plate or foot not attached correctly .......................... 104
Differential feed not set correctly for fabric ............................ 88
NEEDLE BREAKS
Needle strikes foot or needle plate while pulling
on fabric; do not pull fabric, gently guide it ............................ 76
Needle problems – poor quality, bent or dull ......................... 32
Needle(s) not inserted correctly ............................................. 24
Needle size incorrect for fabric .............................................. 32
TROUBLESHOOTING
MACHINE JAMS
Incorrect threading .............................................................. 34-72
Needle plate not attached correctly ....................................... 104
Stitch length too short ......................................................... 22, 90
Incorrect thread tensions ..................................................... 82-86
Chain needle thread not engaged properly in
tension discs; use tension release lever ...................... 60, 82
Thread tangled or knotted ................................................... 34-36
Foot pressure set too low ......................................................... 74
Use the foam pads to avoid thread tangling ............................ 14
Upper knife is disengaged and
fabric edge is too far to right; needles can break .............. 26
MACHINE RUNS SLOW OR NOT AT ALL
Reconnect foot control ............................................................. 16
Cleaning and oiling ................................................................. 104
NOISY MACHINE
Cleaning and oiling ................................................................. 104
Clean both upper and lower knives ........................................ 104
Replace bent or dull needle(s) ................................................. 32
Replace upper knife ............................................................... 106
FABRIC IS NOT CUT
Upper knife not engaged correctly ........................................... 26
Upper knife not attached correctly ......................................... 106
Check if upper knife is locked correctly ................................... 92
FABRIC NOT CUT CORRECTLY
Cutting width dial not set correctly ........................................... 24
Upper knife not attached correctly ......................................... 106
Clean both upper and lower knives ........................................ 104
Check if upper knife is locked correctly ................................... 92
Lock upper knife when sewing heavyweight fabric .................. 92
Unlock upper knife when not sewing heavyweight fabric ........ 92
Replace upper knife ............................................................... 106
Check needle plate setting knob position ................................ 30
STITCHES ARE NOT FORMED CORRECTLY ALONG FABRIC
EDGE
Wrong program number is selected ......................................... 20
Recheck all threading points ............................................... 34-72
Cutting width dial not set correctly ........................................... 24
Check needle plate setting knob position ................................ 30
108
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Table des Matières
