Brother BAS-311E service manual Assembly, q 1!4, w @1, @3 w

Chapter 3. Assembly

V notch

t

!9

!8

!1

!6

e

0.5 - 1mm

q

!1!4

!3

@0

6.Turn the pulley to align the needle bar with the shuttle hook. At this time, turn the stepping work clamp con- necting rod !8to turn stepping work clamp arm F !1in the direction of the arrow and move the stepping link assy !6in the direction of the arrow. When the presser

foot is at the lowest position, secure the stepping work clamp connecting rod !8to the upper shaft @0using the set screw !9.

Adjust the lift stroke of presser foot A to 3-5 mm, and 5-8 mm. When the clearance between the presser bar lifter e and the presser bar bush q is 0.5 - 1 mm, tighten the bolt !4of stepping work clamp arm R !3. (At this time, the match mark of stepping work clamp arm F !1will be almost aligned with that of arm.)

Note: Make sure that stepping work clamp arm F !0has no end play.

Align

w @1

	7.	Secure the needle bar clamp t using the screw so that
		when the presser bar w is at the lowest position. The
		distance between the bottom of the presser bar w and
		the top of the needle plate should be 23 mm. (22 mm for
		311EL.)
@3 w		Attach the presser foot @1to the presser bar w so that
		the top of the presser foot @1is aligned with the top of
@1	@2	the screw that holds the presser foot @2.
	8.	Attach the needle @2to the needle bar @3.
@2	9.	Turn the pulley to insert the needle @2into the hole of the
		presser foot @1. Turn the presser bar w so that the

needle @2is in the center of the hole of the presser foot @1, and tighten the screw of the needle bar clamp t.

w

@1

10.Turn the pulley to set the presser bar w at its lowest po- sition. Adjust the height of the presser foot @1so that there is a 0.5 mm clearance from the top of the material to be sewn.

0.5mm

42 BAS-311E.311EL.326E.326EL