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12

MECHANICAL ADJUSTMENT

NEEDLE DROP

To check:
When the needle swings in maximum zigzag width, the distance between both ends of the needle hole 
on the needle plate and the needle drop positions should be equal.
If not, adjust as follows:

Adjustment procedure:
1.   Remove the face cover (See page 4).
2.   Set the pattern selector dial at maximum zigzag width.
3.  Loosen the setscrew.
4.   Turn the eccentric pin to adjust the needle drop.
5.  Tighten the setscrew.
6.  Attach the face cover.

NOTE: Check the hook timing after this adjustment.

Setscrew

Eccentric pin

Both clearances should be equal

Summary of Contents for 1000 Sew 75

Page 1: ...SERVICE MANUAL MODEL 1000 Sew 75 First Edition 26 June 2015...

Page 2: ...AR HEIGHT AND ALIGNMENT 10 NEEDLE SWING 11 NEEDLE DROP 12 CLEARANCE BETWEEN NEEDLE AND HOOK ADJUSTMENT METHOD NO 1 13 CLEARANCE BETWEEN NEEDLE AND HOOK ADJUSTMENT METHOD NO 2 14 FEED DOG HEIGHT 15 NEE...

Page 3: ...6 Inappropriate needle bar See mechanical adjustment P 16 height Needle bar height 7 Inappropriate needle to hook See mechanical adjustment P 17 timing Needle timing to shuttle 8 Inappropriate needle...

Page 4: ...ad 2 Too much thread is around on Adjust the position of stopper the bobbin 3 Lint is stuck inside the hook Clean the hook race race 4 Thread quality is too low Change to a high quality sewing thread...

Page 5: ...Motor belt tension 4 Upper shaft gear is loose Eliminate the looseness 5 Not enough oil Oil all moving parts 7 Deformation of 1 Inappropriate zigzag See mechanical adjustment P 11 pattern synchroniza...

Page 6: ...by removing the setscrew A To attach 2 Mount the face cover in reverse procedure of the removing BELT COVER To remove 1 Loosen setscrew B 2 Take the belt cover out To attach 3 Mount the belt cover in...

Page 7: ...5 SERVICE ACCESS 2 BASE PLATE To remove 1 Loosen the setscrews A 2 Remove the base plate To attach 3 Mount the base plate in reverse procedure of the removing Base plate A...

Page 8: ...ge 4 2 Remove dial A 3 Loosen setscrews B C D E and F and then remove the front cover by removing setscrews G H and I NOTE Unhook the tab J from the rear cover when removing the front cover To attach...

Page 9: ...B C and D 2 pcs and then remove the rear cover by removing setscrews E F G and H NOTE Remove the rear cover in the order of X lower part Y upper part Z presser foot lifter part To attach 3 Mount the r...

Page 10: ...at 3 make sure the foot should be lowered If the tension is out of the standard range adjust it as follows Adjustment procedure 1 Remove the front cover unit See page 6 2 Turn the adjusting nut C in...

Page 11: ...sion 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 Adjustment procedure 1 Turn the adjusting screw C in the direction of D when...

Page 12: ...e 4 2 Raise the presser foot lever and loosen the setscrew C on the presser bar holder Adjust the distance between the presser foot D and the needle plate D to 6 0 mm 0 24 3 Tighten the setscrew C sec...

Page 13: ...idth and remove the front cover See page 6 2 Loosen two setscrews 3 Adjust the needle swing by turning the handwheel while holding the worm so as not to rotate it until the needle swing starts at 2 3...

Page 14: ...sitions should be equal If not adjust as follows Adjustment procedure 1 Remove the face cover See page 4 2 Set the pattern selector dial at maximum zigzag width 3 Loosen the setscrew 4 Turn the eccent...

Page 15: ...is too wide move the needle bar supporter to direction B If clearance is too narrow move the needle bar supporter to direction C NOTE After this adjustment check that the clearance between the needle...

Page 16: ...he needle and the shuttle race in the range of 0 05 to 0 10 mm 5 Set the pattern select dial at turn the handwheel to check if the clearance between the needle and inner edges of the shuttle race spri...

Page 17: ...f it is not in the range adjust as follows Adjustment procedure 1 Open the shuttle cover 2 Lower the presser foot and turn the handwheel toward you until the feed dog comes to its highest point 3 Loos...

Page 18: ...ent procedure 1 Open the face cover 2 Set the pattern selector dial at 3 Open the shuttle cover 4 Remove the shuttle race ring 5 Turn the handwheel toward you until the tip of the shuttle hook meets t...

Page 19: ...you until the tip of the shuttle hook meets the left side of the needle 6 Loosen the lower shaft crank arm screws A 7 While holding the shuttle hook so it doesn t turn turn the handwheel toward you un...

Page 20: ...ard feeding against 10 stitches in the left side row forward feeding is considered acceptable Adjustment procedure 1 Check the stitches by sewing buttonholes and remove the cap 2 Turn the adjusting sc...

Page 21: ...d backward feeding during stretch stitch pattern sewing make an adjustment as follows Adjustment procedure 1 Remove the cap 2 Set the pattern selector dial at and the stitch length dial at S S 3 Turn...

Page 22: ...cover see page 1 4 Attach the buttonhole foot 5 Place a sheet of paper on the feed dog and lower the foot 6 Turn the balance wheel toward you and check the feeding 1 If the paper moves backward in the...

Page 23: ...ern selector cam 4 Loosen the setscrew 5 Push the convex part of the cam follower releasing arm in the direction of arrow until the cam follower releasing arm touches position A of the pattern select...

Page 24: ...ion should be 7mm 9mm when pressing the middle of the motor belt with approximately 300 grams of pressure Adjustment procedure 1 Remove the belt cover See page 4 2 Loosen the setscrews A and B 3 Move...

Page 25: ...unit WIRING 1 Remove the belt cover See page 4 2 Remove the screws A B and machine socket cover 3 Follow the above procedure in reverse From lamp socket From motor B Machine socket cover 120V 240V Fr...

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