19.
PROBLEM
SOLVING
Under normal | conditions, if | you | |
necessary | for | this machine. |
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Toliowing | cases are not failure | ||
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carefully | follow | instruction for operating, | |
of | machine. Check your machine before | ||
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no | difficult | or special | |
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you call for | service. | ||
adjustment
is
SQiLEM
CAUSE
CORREc11ON
REFERENCE
Machine | does |
| Not plugged | in properly | • | Plug cord into | electrical | outlet | |||||||
not | sew |
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| and machine | properly |
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Machine | does | • | Pressure on | presser | foot | • | Increase | pressure | by turning | ||||||
not | feed | ||||||||||||||
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| pressure | regulator screw | to | ||||||||
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Drccerlv |
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| Differential feed not | set correctly |
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| Adlust | differential | feed |
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Needle Breaks |
| Bent or | blunt | needle |
| • | Insert | new needle |
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| Needle | inserted incorrectly |
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| • | Reset needle |
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| Pulling |
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| fabric | while sewing | • | Do not | pull fabric |
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11
16
6 6
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Threads
3kipping Stitches
| improper | threading |
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| Thread | tension(s) | too | tight | ||
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| Incorrect | setting | of | needle | ||
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• | Bent or | blunt needle |
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| Needle | inserted incorrectly | ||||
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a | Improper | threading |
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• | Reset | thread tension(s) |
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• | Reset needle |
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• | Reset | needle/change | to | new |
| needle |
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• | Insert | new needle |
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• | Reset | needle |
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6 6
irreaular | • | Tension | not adjusted | properly | • | Check thread tensions |
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Stitcnes |
| Bad |
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Puckering | • | Needle | thread tensions | are too | • | Loosen | needle thread | tensions | ||||
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| • | Improper threading |
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| • | Need | differential feed |
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| • | Set differential feed 0.7 |
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13.14 6
13.14