Motorola HE-8000, LH4-B800E Adjusting the work clamp pressure, Adjusting the knife installation

10.STANDARD ADJUSTMENTS

10-4. Adjusting the inner rotary hook and rotary hook holder overlap

(1)

A

(3)(2)

2171Q

Loosen the screw (3) to adjust so that the tip of the rotary hook holder (1) does not protrude past the edge A of the inner rotary hook (2).

10-5. Adjusting the work clamp pressure

(2)

(1)

A

1.The standard distance A is 30 mm (approximately 30 N).

2.Loosen the nut (1) and turn the presser adjusting screw (2) to adjust the work clamp pressure.

2172Q

10-6. Adjusting the knife installation

2173Q

(2)
(1)
		Lowest
		position
	Top of needle plate
(3)	1.5 – 2.0 mm	Lowest
		position
	Top of needle
2174Q	plate
	(4)
		(5)

1.Install the knife with the screw (2) so that the top

(1) of the knife blade is aligned with the top of the needle plate when the knife is pressed down by hand to its lowest position.

For the flat cutter (3), install with the screw (2) so

that the top (1) of the knife blade is 1.5 – 2.0 mm above the top of the needle plate.

NOTE:

When the knife is driven by the solenoid, the movement will be approximately 2 mm greater than that shown in the illustration.

NOTE:

If the knife does not cut properly, the knife may get stuck in the material and not return. If this happens, replace or sharpen the knife.

A special needle plate which helps to prevent the knife from getting stuck and which helps maintain the cutting edge is available as an option.

2. Loosen the screw (5) to adjust so that the clearance between the cutter and the needle bar

(4) is 0.3 mm.

*Check that the needle bar (4) does not touch the cutter when it moves sideways.

0.3 mm

2175Q

HE-8000 73