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Elna 845 Manual

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109
TROUBLESHOOTING
SKIPPING OR IRREGULAR STITCHES
Incorrect threading...........................................42-58
Incorrect thread tensions .................................82-86
Needle problems – poor quality, bent or dull........ 34
Needles not inserted correctly ..............................36
Do not pull on fabric, guide it gently ..................... 76
Incorrect presser foot............................................32
Needle plate or foot not attached correctly......... 104
Cutting width dial not set correctly........................26
Antenna not extended/positioned correctly ..........16
Do not lift presser foot at end of seam .................76
Incorrect pressure used for heavier fabrics....72, 98
BREAKING THREADS
Incorrect threading...........................................42-58
Incorrect thread tensions .................................82-86
Thread tangled or knotted ...............................38-40
When re-threading lower looper, needle
eye must be unthreaded before
re-threading looper ..........................................42
Needle plate or foot not attached correctly......... 104
Antenna not extended/positioned correctly ..........16
Foam pads needed on spool pin bases ...............16
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 ...........................................82, 86
Needle problems – poor quality, bent or dull........ 34
Needle not inserted correctly................................ 36
Lower looper threaded – Re-thread into
chain looper.................................................56-58
FABRIC PUCKERS
Needle tension(s) too high...............................82-86
Stitch length too long ............................................ 90
Thread too heavy.............................................38-40
Foot pressure not set correctly for fabric..............72
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........ 34
Needle(s) not inserted correctly............................36
Needle size incorrect for fabric.............................34
MACHINE JAMS
Incorrect threading ..........................................42-58
Needle plate not attached correctly.................... 104
Stitch length too short..................................... 24, 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 ...............................38-40
Foot pressure set too low ..................................... 72
Foam pads needed on spool pin bases ............... 16
Movable cutting blade is disengaged and
fabric edge is too far to right; needles
can break ......................................................... 28
MACHINE RUNS SLOW OR NOT AT ALL
Check safety systems .......................................... 74
Reconnect foot control ......................................... 18
Cleaning and oiling............................................. 104
NOISY MACHINE
Cleaning and oiling............................................. 104
Brush both cutting blades................................... 104
Replace bent or dull needle(s) ............................. 34
Replace movable cutting blade .......................... 106
FABRIC IS NOT CUT
Movable cutting blade not engaged correctly ...... 28
Movable cutting blade not attached correctly..... 106
Check if movable cutting blade is locked
correctly ........................................................... 92
FABRIC NOT CUT CORRECTLY
Cutting width dial not set correctly ....................... 26
Movable cutting blade not attached correctly..... 106
Brush both cutting blades................................... 104
Check if movable cutting blade is locked
correctly ........................................................... 92
Lock movable cutting blade when sewing
heavyweight fabric........................................... 92
Unlock movable cutting blade when not
sewing heavyweight fabric............................... 92
Replace movable cutting blade .......................... 106
Check instant rolled hem device position............. 32
STITCHES ARE NOT FORMED CORRECTLY
ALONG FABRIC EDGE
Program display panel set for wrong stitch .......... 22
Recheck all threading points ........................... 38-71
Cutting width dial not set correctly ....................... 26
Check instant rolled hem device position............. 32
… 109 …


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