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5.3.7)
Adjusting the Upper Thread Detecting
Device
1) Unfasten the thread detecting plate screw with the
thread off the take-up spring and make the take-
up lever spring touch the detecting plate. Then,
tighten the screw.
2) Be sure to adjust the detecting plate so the take-
up lever spring and the detecting plate will
connect with each other even when the take-up
lever spring stroke changes.
5.3.8)
Adjusting the Height of the Presser Foot
1) Unfasten presser foot screw ① with the needle
bar at the lowest position.
2) Adjust the height so that the presser foot bottom
comes 0.5mm(the thickness of the thread used)
above the sewing material. Then, tighten the
screw.
5.3.9) Adjusting the Hand Pulley Device
1) Tighten the screw after putting the hand pulley
gear Ⓑ and the hand pulley shaft tip in accord.
2) Adjust the clearance of hand pulley gears Ⓐ and
Ⓑ and tighten the screws.
3) Move the bushing in the direction of the arrow to
reduce the backlash between gears Ⓐ and Ⓑ
when the roller is on the end of the pulley
bushing.
Be careful not to touch with any other metals except take-up lever spring. If it does, detection may be
failed.
Caution
After adjusting the height of presser foot, confirm the position of wiper.
·Too excessive gap can cause jumping.
·Insufficient gap can cause a failure in thread adjustment.
Caution
Thread Take-up Spring
Thread
Detecting
Plate
Screw
①
0.5mm
Hand Pulley Bushing
Hand Pulley Shaft
GearⒶ
GearⒷ
Roller
Upper
Shaft
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