Adjusting Clearance Between Needle And Hook Point - ELNA 320 Service Manual

Adjusting Clearance between Needle and Hook Point

The standard clearance between the needle and hook point should be -0.10 to +0.05 mm.
<TO ADJUST>
1 Select the zigzag stitch ( ) and set the stitch dial at 5.
2 Remove the base cover (see page 2). Remove the needle plate and bobbin holder.
3 Replace the needle with the test pin. Loosen the setscrews (B) and (C). Slightly loosen
the setscrew (A).
4 Turn the handwheel toward you to bring the hook point behind the test pin.
5 Adjust the clearance to -0.1 to +0.05 mm by moving the hook base plate up or down.
6 Tighten the setscrews (A), (B) and (C) securely.
7 Check the backlash of the hook drive gear and lower shaft gear.
NOTE:
Adjust the backlash if necessary (see page 12).
8 Attach the base cover.
9 Replace the test pin with the needle. Attach the bobbin holder and needle plate.
Test pin
Hook point
–0.1 to +0.05mm
Setscrew
Needle plate
Hook base palte
Bobbin holder
Setscrew (A)
Setscrew (B)
Setscrew (C)
11