12
SETTING NEEDLE THREAD GUIDE AND FRAME EYELET
Turn handwheel in operating direction until the needle bar
reaches its lowest position. Set needle thread take-up wire
(B, Fig. 15) so that its thread contact surface is even with the
center of the needle bar thread eyelet (C). Lower this
setting for a smaller needle thread loop, raise for a larger
loop. Set needle thread frame eyelet (D) so that it is ap-
proximately 3/4 inch (19.1mm) above centerline of its
attaching screw (Fig. 15).
TORQUE REQUIREMENTS
Torque specifications given in this catalog are measured in
inch-pounds or centimeter/kilograms. All straps and eccen-
trics must be tightened to 19-21 in. lbs. (22-24cm/kg) unless
otherwise noted.
All nuts, bolts, screws, etc., without torque specifications must be secured as tightly as possible, unless
otherwise noted. Special torque specifications of connecting rods, links, screws, etc., are shown on part
illustrations.
SPECIAL INSTRUCTIONS
NEEDLE LEVER
When adjusting needle lever or replacing related
parts, follow instructions in sequence as listed:
1. Install “O” rings (A, Fig. 16) onto needle lever stud
(B) and thrust collar (C).
2. With needle lever (D) in machine and positioned
properly; insert stud (B) through hole in needle lever
until its shoulder contacts the needle lever and the
word “UP” on stud is in the upright position. While
making sure no binding exists in the needle bar link,
secure stud (B) with the front set screw in top of
machine bed.
3. Install temper load ring (E) and compression cups
(F) onto stud (B), then push ring and cups through
opening in machine bed.
4.
Install thrust collar (C) onto stud (B) being careful not to damage “O” ring. Compress components
together by tighening screw (G) until washer (H) bottoms against stud (B). Secure stud (B) in position
using the rear set screw in top of bed.
5. To check temper load ring for proper compression,
remove screw (G) from stud (B) and loosen rear set
screw in top of bed. Thrust collar (C) should spring
out .003 - .007 inch (.08 .18mm).
Compress load ring in reverse order, then tighten
rear set screw.
6. With indented “UP” on stud (B) in upright position,
install bearing oiler (J) so its hook sets in oil supply
hole (K) of stud. When hook and stud are secured
in their proper positions, the proper amount of oil
will be channeled to stud for lubricating needle
lever (D).
Fig 16
Fig 17
Fig 15