Table of Contents
Advertisement
2) Adjustment for HC type
－ Adjustment of distance between blades
Loosen the fixing screw for the fixed blade and
adjust the fixed blade base to set the distance
between the needle plate cover and the fixed
blade to be 0.5mm.
1. After completing the distance adjustment, use the testing device to test whether there is an
electric short circuit among the fixed blade, the needle plate cover, and the needle plate (If there
is a short circuit, it may cause bad trimming and machine breakdown).
Caution
2. The tightening pressure of the fixing screw① should be set at 9.8~14.7N/cm (10~15kgf/cm).
5.8) Adjustment of Bobbin Thread Volume
To adjust the thread volume wound on the bobbin, use the
initial position of the thread winder adjusting plate. If lots of
thread is wound, loosen the tightening screw on the thread
winder adjusting plate and turn it to the A direction. If the
thread volume wound on the bobbin is small, turn the screw
in the B direction.
－ Adjust the thread winder wheel to be 1mm away from
the presser foot driving cam and fasten the tightening
screw.
Fixing Screw
Bobbin
Thread Winder Adjusting Plate
Upper
Shaft
Presser Foot
Drive Cam
Thread Winder
Drive Wheel
33
Advertisement
Table of Contents
