To Set Presser Bar At Correct Height - Singer 491D Service Manual

TO SET PRESSER BAR AT CORRECT HEIGHT

G
J
H
Fig. 5
PREPARATION:
Remove face plate and slide plate.
CHECK:
1. When presser foot rests firmly upon throat plate (with feed dog below throat
plate) there should still be some clearance between guide bracket G, Fig. 5
and lifting lever link H, as shown in Fig. 5.
2. When presser foot is at its highest point and needle bar is at its lowest,
top of presser foot should clear lower end of needle bar, as shown in Fig. 6.
SETTING:
Loosen clamping screw J, Fig. 5. Raise or lower guide bracket G, as
required. Securely tighten screw J.
CAUTION: Whenever guide bracket has been moved on presser bar, inspect the
check spring for correct setting, as instructed on pages 2 and 3.
CLEARANCE
FOOT
RESTING
FIRMLY
UPON
THROAT
PLATE
- 4 -
AT LOWEST
POINT
AT HIGHEST
POINT
Fig. 6
JUST
CLEAR