Differential Feed Adjustment - SunStar SC 7900-Series User Manual

Speed overlock direct drive, 4-needle flat seamer feed off the amp type

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After adjusting the stitch length, fix it firmly by tightening the feed rocker link shaft screw

(The left screw

of the bed is to prevent oil leakage so tighten it firmly.)

After adjusting the needle guard(back)

9) DIFFERENTIAL FEED ADJUSTMENT

To adjust the differential feed dog, rotate the differential feed

operating lever

to the left or the right.

If the differential feed operating lever

momentums of the main feed dog and the differential feed dog

will be the same.

For the forward differential, turn the differential feed operating

lever

to the scale of 9. For the reverse differential, turn the

differential feed operating lever

to the proper position and tighten the needle guard(back) clamp screw

is on the 4 or 5, the

to the scale of 1.

then fill the left screw

of the bed.

firmly.

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