Table of Contents
Advertisement
FIG. 15
FIG. 16
FIG. 17
LOOPER ADJUSTMENTS (CONT.)
Looper Gauge
Turn the handwheel in operating direction until the looper has trav-
eled fully to the left. Loosen screw (A, Fig. 15) and move the looper
holder to the right or left until the distance from the point of the looper
to the center of the first (left) needle is 3/16" (4.8mm) (Looper gauge
21225F3/16 can be used for a more accurate measurement). Clear-
ance between the looper point and the scarf of the needle must not
exceed .002" (0.05mm).
dimension is achieved. Tighten screw (A).
NOTE: Looper gauge may need to be increased or decreased slightly
to obtain a proper stitch.
SETTING THE FRONT NEEDLE GUARD
Install needle guard (A, Fig. 16) and position it to touch but not deflect
the first needle. Slowly turn the handwheel in operating direction and
check the needles to make sure they are not pinched between the
looper and the needle guard.
Preliminary Setting:
Install the differential feed dog (A, Fig. 17) with screw (B).
Attach rear needle guard (C) to main feed dog (D),
pushing in fully to the rear and tighten screw (E). Install
main feed dog with screw (F).
As a starting point loosen screw (G) and set the slot in feed
bar eccentric stud (H) in a horizontal position. Tighten
screw (G). At the highest point of travel feed dogs (A and
D) should be the depth of .020" (0.5mm) above throat
plate (J). Loosen screws (B and F) and adjust the height
of each feed dog by moving them up or down in the
elongated slot of the shank. Tighten screws (B and F).
Loosen screw (G) and turn stud (H) until the top of the feed
dogs are parallel to the throat plate. Rotating stud (H) will
simultaneously level both feed dogs.
NOTE:
Final Setting:
Both the main and differential feed dogs may be individu-
ally adjusted to height. Main feed dog (D) at its highest
position should rise above the top of the throat plate the
depth of one full tooth when the normal presser spring
pressure is applied. The differential feed (A) may then be
raised to it.
13
Turn screw (B) until the .002" (0.05mm)
SETTING THE FEED DOGS
When setting eccentric stud (H) if turned clock-
wise feeddogs should go up if turned counter-
clockwise feed dogs should go down.
Advertisement
Table of Contents
