4. INSTALLATION￿

￿

￿-￿￿-￿. Lubricating the arm

Apply 5-6 drops of oil to the oil inlet (1) at the top of the arm.

* When using the machine, check that the oil is visible through the oil window (2). If it cannot be seen, problems such as seizure of the mechanism may occur.

3898Q

￿-￿￿-￿. Lubricating the rotary hook

3899Q

When first installing the machine and when the machine has not been used for an extended period of time, remove the bobbin and add 2-3 drops of oil to the rotary hook race (1) before sewing.

More

Less

3900Q

Rotary hook lubrication adjustment￿

1.Remove the rubber cap (2).

2.Turn the adjusting screw (3) to adjust the lubrication amount.

*Adjust so that approximately 10 drops of oil are released when the sewing machine is run at a speed of 4,000 sti/min for three cycles to sew about 114 stitches. Use Kraft paper (4) or similar to catch the oil drops. As a guide, the optimum position can be obtained if the adjusting screw (3) is tightened as much as possible and then loosened about two turns.

25

HE-800A