
(A)
(B)
(C)
(E)
(D)
(G)
(H)
18.7 mm
(H)
104 72 63-26
17
Adjustment of synchronizer
Requirement
When the needle stop is set on UP the needle should stop on its upper position.
When the needle stop is set on DOWN the needle should stop in its down position.
Check
• Press both the Up/Down needle position button (B) and bobbin winding button (C) at the same time while
turning the power switch (A) on.
• Turn the hand wheel in the sewing direction slowly,
NOTE! The needle must come from its upper turning point.
• Stop when the needle point is 18.7 mm above the upper surface of the needle plate (D),
• At this point the green LED (H) should now light up.
Adjustment
• Press both the Up/Down needle position button (B) and bobbin winding button (C) at the same time while
turning the power switch (A) on.
• Remove the top cover.
• Set the needle in its upper turning position
• Turn the hand wheel in the sewing direction slowly, until the needle point is 18.7 mm above the upper surface
of the needle plate (D).
• Loosen the setscrew (E).
• Rotate the upper shaft shielding plate (G) toward you until the green LED (H) turns on.
• Tighten the setscrew (E) and turn the power switch off.
NOTE! When tightening the set screw (E) check so the shield (G) is not hitting the sensor (H).
• Attach the top cover.