Bernette Sublime London 5 Mode D'emploi page 128

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DE
EN Troubleshooting guide
Problem
Cause
Upper thread
1. The machine is not threaded correctly
breaks
2. The thread tension is too tight
3. The thread is too thick for the needle
4. The needle is not inserted correctly
5. The thread is round wound the spool holder pin
6. The needle is damaged
Skipped stitches
1. The needle is not inserted correctly
2. The needle is damaged
3. The wrong size needle has been used
4. The foot is not attached correctly
Needle breaks
1. The needle is damaged
2. The needle is not correctly inserted
3. Wrong needle size for the fabric
4. The wrong foot is attached
Loose stitches
1. The machine is not correctly threaded
2. The bobbin case is not correctly threaded
3. Needle/ fabric/ thread combination is wrong
4. Thread tension wrong
Seams gather or
1. The needle is too thick for the fabric
pucker
2. The stitch length is wrongly adjusted
3. The thread tension is too tight
Uneven stitches,
1. Poor quality thread
uneven feed
2. The bobbin case is wrongly threaded
3. Fabric has been pulled
The machine is
1. The machine must be lubricated
noisy
2. Fluff or oil have collected on the hook or needle bar
3. Poor quality oil has been used
4. The needle is damaged
The machine
1. Thread is caught in the hook
jams
Machine sews in
1. Machine sews in reverse
reverse
Correction
1. Rethread the machine
2. Reduce the thread tension (lower number)
3. Select a larger needle
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5. Remove the reel and wind thread onto reel
6. Replace the needle
 5HPRYH DQG UHLQVHUW QHHGOH ÀDW VLGH WRZDUGV WKH EDFN +
2. Insert a new needle
3. Choose a needle to suit the thread and fabric
4. Check and attach foot correctly
1. Insert a new needle
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3. Choose a needle to suit the thread and fabric
4. Select the correct foot
1. Check the threading
2. Thread the bobbin case as illustrated
3. The needle size must suit the fabric and thread
4. Correct the thread tension
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2. Readjust the stitch length
3. Loosen the thread tension
1. Select a better quality thread
2. Remove bobbin case and rethread and insert correctly
3. Do not pull on the fabric while sewing, let it be taken up by the machine
1. Lubricate as described
2. Clean the hook and feed dog as described
3. Only use good quality sewing machine oil
4. Replace the needle
1. Remove the upper thread and bobbin case, turn the handwheel
backwards and forwards by hand and remove the thread remands.
Lubricate as described.
1. Turn stitch selector up to next increment

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