11
The amount of ascending travel of the needle bar from its lowest position to the position ( ) where the tip of
the rotary hook exactly meets the right side of the needle should be 3.25 to 3.55 mm.
1. Remove the setscrews (2 pcs.) on the needle plate, the needle plate and the bobbin holder.
2. Remove the free arm cover (see page 5).
3. Turn the power switch on.
4. Select the pattern (left position). Set the zigzag width at 0.
Turn the handwheel toward you to lower the needle at its lowest position.
5. Loosen the hexagonal socket screw (2 pcs.).
6. Move the needle bar 3.25 to 3.55 mm from the lowest position.
7. Turn the lower shaft gear until the tip of hook meets the right side of the needle while holding the handwheel.
8. Tighten the hexagonal socket screw (2 pcs.).
9. Attach the free arm cover, bobbin holder and needle plate.
MECHANICAL ADJUSTMENT
ADJUSTMENT OF HOOK TIMING
Hexagonal socket screw
Hexagonal socket screw
Bobbin holder
Lower shaft gear
Left position ( ) (#14)
Tip of hook meets the right side of the needle
Lowest needle position
3.25 to 3.55 mm
Needle plate
Setscrew
Setscrew
Summary of Contents for 5270QDC
Page 1: ...First Edition 06 March 2020 SERVICE MANUAL PARTS LIST MODEL 5270QDC For Europe only...
Page 39: ...37 TOUCH PANEL KEY POSITION ADJUSTMENT GUIDE Print this illustration guide to its actual size...
Page 52: ...50 MODEL 5270QDC PARTS LIST 1 2 3 4 6 5 7 8 9 10 11 12 13 14 17 15 18 19 20 9 21 21 22 23 16...
