Adjusting The Lowest Point Of The Presser Foot - Brother BAS-311E Service Manual

Chapter 4. Adjustments

8. Adjusting the lowest point of the presser foot

o
i
!6
r
q
!5
!4
58
w
e
y
0.5 - 1mm
u
!1
!0
t
!2
BAS-311E.311EL.326E.326EL
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 !2 into the hole of the
presser foot !4 . Turn the presser bar !5 so that the
needle !2 is in the center of the hole of the presser foot
! 4 , and tighten the screw of the needle bar clamp ! 6 .