Singer 471U - Oil Upper Clamping Foot Position Control

[It] Upper clamping foot position control
Loosen the screws O, O andadjustthe length feed drive shaftarmO andtheupper clamping foot roller O so
that the cuttergroove comes to the center of the upper clamp window. After adjustment, confirm that the upper
clamp moves smoothly up and down by operating the presser bar lifter pedal.
IHj Rotaty hook
1. Temporarily fasten the rotary hook to the rotary hook shaft.
2. Adjust the rotary hook so that whenthe clutch isengaged and the pulley isturned to bring the needle bar up from
the lowest point making the second needle position Bform the bottom on the needle bar even with the index, the
sharp end of the rotary hook is lined up with the center of the needle and the distance between the needle and the
sharp end of rotary hook is 0.03 ~ 0.08 mm, and then tighten the two screws O-
0.03~0.08 mm
1.2 mm
3. Attachthe rotary hookpositionbracketAO withthetwo screws O- Adjust therotaryhookposition bracketA
o so that its end is evenwith the shuttle body 0, and then tighten the two screws Q.
4. Attach the rotary hook position bracket BO withthe two screws O, andadjust thedistance between theshuttle
body0 and the rotary hook positionbracketB0 so that it is 1.0 ~ 1.5 mm,and thetightenthe two screws (
Aligned
0
1.0~1.5 mm
0
-35-
From the library of: Superior Sewing Machine & Supply LLC