Reliable MSK-8420B instruction manual Presser foot lift volume adjustment

5.5 Presser foot lift volume adjustment (Fig.29)

when stitch on the very elastic material or the thickness of the sewing material is changed. The ad- justment should be done in the following order:

1.Loosen the special screw.

2.When the centerline distance between the special screw and the presser foot lift rear crank becomes shorter, the presser foot lift volume will become longer. On the country the distance becomes longer, the lift volume will become shorter.

3.After adjustment, tighten the special screw. The common presser foot lift volume can be adjusted in the range of 2-6 mm.

5.6 Hook oil amount adjustment (Fig.30)

It adopts plunger full auto lubrication system, even at very low speed, it can supply and suck oil very well. Generally only the hook oil amount can be ad- justed, the other can not be adjusted. The hook oil amount can be obtained by the oil amount adjusting screw. First loosen the nut of the adjusting screw, turn the screw clockwise to increase the oil amount, on the contrary reduce the oil amount. After adjust- ment, tighten the nut.

nut