Brother BAS-311E Adjusting the lowest point of the presser foot, Adjustments, w o e y, r q t

Chapter 4. Adjustments

8. Adjusting the lowest point of the presser foot

w

o i

e

y

0.5 - 1mm

!6u

!1

!0

r

qt

!5

!4!2

1.Turn the pulley to align the needle bar with the shuttle hook. At this time, turn the stepping work clamp con- necting rod q to turn stepping work clamp arm F w in

the direction of the arrow, and move the stepping link assy e in the direction of the arrow. When the presser foot is at the lowest position, secure the stepping work clamp connecting rod q to the upper shaft t using the set screw r.

Adjust the lift stroke of the presser foot to 3 - 5 mm, and

5 - 8 mm. When the clearance between the presser bar lifter y and the presser bar bush u is 0.5 - 1 mm, tighten the bolt of stepping work clamp arm F w. (At this time, the match mark i of stepping work clamp arm F w will be almost aligned with that of arm mark o.)

Note: Make sure that stepping work clamp arm F w has no end play.

2.Attach the needle to the needle bar.

3.Turn the pulley to insert the needle !2into the hole of the presser foot !4. Turn the presser bar !5so that the needle !2is in the center of the hole of the presser foot !4, and tighten the screw of the needle bar clamp !6.

58 BAS-311E.311EL.326E.326EL