Af2.Ti5At\J® 20-53 Operators Manual and Spare Parts Booklet
CONTENTS
1. Application','
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.. 1
2.Secure operation···
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3.Caution before operation-:
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4.Lubrication ..· 5.The selection of thread····
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1
,
1
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2
6.Tthe Inserting of needle···· .. ··· 7.DismolJnting the bobbin case·······
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2
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, 2
8.Wind the bobbin case (20U33/43/53/53A163/143, 457A1B/D)····
3
9.Tl1read the bobbin case (20U23/23D) .. ·
3
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1O.Assemblage of the bobbin····
3
11.Mounting of bobbin case··················
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4
12.Thread the surface stitch············· .. ···
4
13.Adjustment of the thread length··· .. · ..·.. ·
5
14.Adjustment of pressure of presser foot······
.......•.
15.Adjustment of surface thread tension············;···· 16.Regulating the take-up sprinq-:
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···· .. ·.. ·..
6
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17.Adjustment of bobbin thread tension-
5
... ... ...
6
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18.Needle position selection (20U33/43/53/53A163)······ 19.Horizontal needle width regulate
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6
7
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DESCRIPTION Linear lock eccenlic sheld screv/ Rolaiinq shull If' Sl1l810 Rot. I I 1; G'I'17::;·8 - ... ." , I"
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Upper cover components Upper COV(>r components Upper cover
Upper cover
Upper cover Upper cover Upper cover Volume adjustinq plate components Volume adjusting plate ...\fo.tljm_e.Clr
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Locating plate of rotating shuttle Screw 01 locating ptate
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Rotaling shuttle shalt Screw arc-cone gear Arc-cone gear of rotating shuttle shaft Arce-cone gear of lower shaft Scrow ot arc-cone gear
Screw Front sleeve of lower shaft Front sleeve of lower shait Lcwer shali retainer ...£l?~iner scr~ 9!.1'?':"'.€r shaft _ Back sleeve 01 lower shaft Back sleeve of fower shaft Lower shaft Lower shaft Screw or diHerenlial gear Dif:erenlial gear
DiHerential gear
Lower sleeve ot venial shaft
Di'lerellhal shaft slidIng-cover
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PART NO.
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MATERIAL-FEEDING COMPONENTS 21
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PART NO.
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Hemmer toot Hemmer edge guide Hwm edge guide screw Buttornhole foot
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Zipper foot complete Emboidery plate EmboidAry plate Straight stitch foot complete Straight stitch feed dog StraiQt!! ",-li!c.h!hroa!.Qlate ~em stem presser foot Hem stem needle plate Hem stem feed dog
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