Janome JF1018S, Servicing Manual

Page 1: ...SERVICING MANUAL Model JF1018S...

Page 2: ...Presser bar height and alignment 8 Needle swing 9 Needle drop 10 Height of feed dog 11 Clearance between needle and hook No 1 12 Clearance between needle and hook No 2 13 Needle bar height 14 Hook ti...

Page 3: ...stuck inside the bobbin holder 4 Thread quality is too low 5 Thread is jamming around the bobbin 6 Bobbin thread tension is too strong HOW TO FIX Insert the needle properly Change the needle Rethread...

Page 4: ...strong 4 Inappropriate feed balance CONDITION 5 Needle breaks 6 Noisy operation 7 Deformation pattern HOW TO FIX See mechanical adjustment needle drop Change the needle See mechanical adjustment Clea...

Page 5: ...cap BELT COVER To remove 1 Loosen the set screw and remove the belt cover by removing the belt cover rib from the front cover To attach 2 Attach the belt cover rib to the front cover And then Attach t...

Page 6: ...face plate and belt cover See page 4 2 Remove selector dials A and B 3 Loosen set screws C D E Ff G and then remove the front cover by removing set screws H I and J To attach 4 Attach the front cover...

Page 7: ...Remove the set screws C D E F and G 4 Pull up the 2 spool pins I and J and lower the presser foot lifter K 5 While pushing the rear cover l near the notches L and M pull upper part of the rear cover...

Page 8: ...dial at 3 Make sure the foot is lowered If the tension is out of the standard range adjust it as follows To adjust 1 Remove the front panel cover unit See page 4 2 Turn the adjusting nut C in the dire...

Page 9: ...bobbin thread tension should be 45 55g when pulling the thread in the direction of B If the tension is out of the range adjust it as follows To adjust 1 Turn the adjusting screw C in the direction of...

Page 10: ...emove set screw A and remove lamp holder set plate 3 Raise the presser foot and loose the presser bar bracket screw and adjust the height 6 0mm 4 Check if the presser foot is parallel to the openings...

Page 11: ...ctor dial with maximum zigzag width and remove the front cover See page 4 2 Loosen two set screws 3 Adjust the needle swing by turning the balance wheel while pressing the worm so as not to rotate it...

Page 12: ...e needle drop positions should be equal If not Make adjustment as follows To adjust 1 Remove the face plate See page 3 2 Set the pattern selector dial at maximum zigzag width 3 Loosen the set screw 4...

Page 13: ...If it is not in the range make adjustment as follows To adjust 1 Set the stitch length dial at 4 pattern select dial at any position 2 Lower the presser foot and turn the balance wheel until the feed...

Page 14: ...r to arrows to get clearance between 0 and 0 15mm When clearance is too wide move the needle bar supporter to direction B When clearance is too narrow move the needle bar supporter to direction C Note...

Page 15: ...ard or backward to adjust the clearance between the needle and the shuttle race in the range of 0 0 15mm 4 Set the pattern select dial at C and turn the balance wheel to check if the Clearance between...

Page 16: ...n To adjust 1 Remove the face plate See page 3 2 Set the pattern selector dial at B stitch length dial at any position 3 Remove the shuttle race ring 4 Turn the balance wheel toward you until tip of s...

Page 17: ...d you until the tip of shuttle hook meets the left side of needle 6 Loosen the set screws A 7 While holding the shuttle hook not to turn turn the balance wheel toward you until the needle comes to its...

Page 18: ...stitches are distorted adjust it as follows To adjust 1 Remove the cap 2 Set the pattern selector dial at A and the stitch length dial at SS 3 Turn the stretch stitch adjusting screw in the direction...

Page 19: ...es in the right side row backward feeding against 10 stitches in the left side row forward feeding is considered acceptable To adjust 1 Check the stitches by sewing buttonholes and remove the cap 2 Tu...

Page 20: ...ttern selector dial at and the stitch length dial at 4 2 Remove the front cover See page 4 3 Place a piece of paper under the foot and turn the balance wheel If the paper is fed forward turn the adjus...

Page 21: ...follower onto the top convex of the zigzag cam 4 Loosen the set screw 5 Push the convex part of the cam follower releasing arm in the direction of arrow until the cam follower releasing arm touches t...

Page 22: ...ger than the length set by the foot R To adjust 1 Remove the face plate See page 3 2 Turn the adjusting screw in the direction of A if the buttonhole stitch length is longer than the standard or in th...

Page 23: ...elt tension may cause jumping of the belt teeth on the motor pulley The correct motor belt tension is that the deflection of motor belt is about 7 mm 0 28 to 9 mm 0 36 when pushing the motor belt by f...

Page 24: ...22 WIRING...