Motorola HE-8000 I, LH4-B800E instruction manual Needle and hook timing adjustment

10. STANDARD ADJUSTMENTS

10-2. Needle and hook timing adjustment

1267Q

(3)

(4)

	(6)
(5)
Mark	Lowest
	position

(1)(2)

2166Q 2168Q 1306Q

After the sewing machine has returned to the home position, press the RESET key before carrying out this adjustment.

1.Loosen the two screws (2) of the rotary hook joint (1).

2.Turn the pulley in the regular direction of rotation (toward the front) so that the needle bar (3) just begins to rise from its lowest position.

3.Insert the “2” part of the gauge (4) between the needle plate (5) and the lower edge of the needle bar (3), and then align the rotary hook point (6) with the center of the needle when the needle bar contacts the

gauge. Different gauges are used for each of the three sub-classes -2, -3 and -5, so check the timing gauge identification marks before using them.

NOTE:

When installing the rotary hook joint, install using the set screw so that the oil inlets in the rotary hook and rotary hook joint (7) are aligned.

(7)

2169Q

10-3. Adjusting the clearance between needle and hook point

0.01 - 0.08 mm

(2)

(3)

(1)

1308Q (4) 2170Q

After the sewing machine has returned to the home position, press the RESET key before carrying out this adjustment.

Loosen the screws (3) and move the rotary hook (4) forward or back until there is a clearance of 0.01 to 0.08 mm between the needle (1) and the hook point (2).

72 HE-8000