17
Clearance adjustment 2
1.  Remove the base.
2.  Loosen the setscrews A, B and C, and tighten 
setscrew C lightly.
 
3.  Adjust the clearance by moving the hook setting plate. 
Turn the handwheel and make sure that the clearance 
between the needle and the tip of the rotary hook is  
-0.10 - +0.05 mm.
4.  Tighten the setscrews A, B and C firmly.
*  After adjusting the clearance by the procedure of 
clearance adjustment 2, check the backlash between 
hook drive gear and lower shaft gear, hook timing and 
needle bar hight. Adjust, if necessary.
 
5.  Attach the base, bobbin holder, needle plate, presser 
foot and needle.
Setscrew C
Setscrew B
Setscrew A
Hook setting plate
Clearance between needle and tip of the rotary hook
The clearance between needle and the tip of the rotary hook should be between -0.1 and 
+0.05 mm.