Trouble Shooting Guide - Gemini STITCH-L100 Manual

Trouble Shooting Guide

Problem
1. The machine is threaded incorrectly
2. The thread tension is too tight
Upper
3. The thread is too thick for the needle
thread
4. The needle is inserted incorrectly
breaks
5. The thread is wound round the spool
pin
6. The needle is damaged
Lower
1. The bobbin case is inserted incorrectly
thread
2. The bobbin case is threaded wrongly
breaks
3. The lower thread tension is too tight
1. The needle is inserted incorrectly
Skipped 2. The needle is damaged
stitches 3. The wrong size needle is in use
4. The foot is attached incorrectly
1. The needle is damaged
Needle
2. The needle is inserted incorrectly
breaks
3. Wrong size needle for fabric is in use
4. The wrong foot is attached
1. The machine is threaded incorrectly
Loose
2. The bobbin case is threaded incorrectly
stitches
3. Needle/fabric/thread combination is
wrong
4. Thread tension is wrong
Seams 1. The needle is too thick for the fabric
gather or 2. The stitch length is wrongly adjusted
pucker 3. The thread tension is too tight
1. Poor quality thread
Uneven
2. The bobbin case is threaded incorrectly
stitches,
3. Fabric has been pulled
uneven
feed
1. The machine needs to be lubricated
Noisy
hook or needle bar
machine
3. Poor quality oil has been used
4. The needle is damaged
Machine
Thread is caught in the hook
jams
Cause
Correction
1. Rethread the machine
2. Reduce the thread tension (lower
number)
3. Select a larger needle
4. Remove and reinsert the needle
(flat side towards the back)
5. Remove the reel and wind the
thread onto the reel
6. Replace the needle
1. Remove and reinsert the bobbin case
and pull on the thread
2. Check the bobbin and bobbin case
3. Loosen the lower thread tension as
described
1. Remove and reinsert the needle (flat side
towards the back)
2. Insert a new needle
3. Choose a needle to suit thread and fabric
4. Check and attach correctly
1. Insert a new needle
2. Insert needle correctly (flat side towards
the back)
3. Choose a needle to suit thread and fabric
4. Select the correct foot
1. Check the threading
2. Thread the bobbin case as illustrated
3. Needle size must suit fabric and thread
4. Correct the thread tension
1. Select a finer needle
2. Readjust the stitch length
3. Loosen the thread tension
1. Select a better quality thread
2. Remove the bobbin case, rethread and
insert it correctly
3. Do not pull on the fabric while sewing,
let it be taken up by the machine
1. Lubricated as described
2. Clean the hook and feed dogs
as described
3. Use only good quality sewing
machine oil
4. Replace the needle
Remove the upper thread and bobbin case,
turn the handwheel backwards and forwards
by hand, and remove the thread remnants.
Lubricate as described
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