4. ADJUSTMENT
HE-800A
88
4-12-1. When using the special needle plate (needle plate -RB)
The special needle plate is used to prevent the cutter from getting stuck in the material and not returning.
1. The special needle plate has a narrow cutter groove of 0.3 - 0.4 mm, so use the accessory positioning plate (1)
to adjust the cutter installation position.
Note:
If this adjustment is not made, the cutter may touch the needle plate, and damage to the cutter may
result.
2. Install the cutter holder (2) to minimize any play in the cutter during cutting.
4-13. Adjusting the cutter installation height
Adjust so that the upper thread scissors and the cutter do not touch when the cutter is pushed down by hand. (Fig.
A
→
Fig. B in “4-12. Adjusting the cutter installation position”)
Install the cutter with the screw (1) so that the tip A of the cutter blade is aligned with the top of the needle plate
when the cutter is pressed down by hand to its lowest position.
If using the flat cutter (2), install with the screw (1) so that there is a clearance of 1.5 - 2.0 mm between the cutter
and the top of the needle plate.
* After adjusting, push the upper thread scissors back to its original position (Fig. A in “4-12. Adjusting the cutter
installation position”).
4308Q
4307Q
4310Q
4309Q
Lowest position
Top of needle plate
Lowest position
Top of needle plate
