Singer 620 - Page 25

TROUBLE SHOOTING GUIDE (Cont'd.)
Needle-Threader Removal and Replacement
Remove pivot-pin-screw and spring from base of
needle-threader supporting arm.
Remove needle-threader assembly. Set pivot-pin-
screw and spring aside.
Replace needle-threader assembly by positioning
it over machined hole. Be sure that threading hook
is pointin g up.
Replace spring with larger end against supporting-
arm.
Replace screw and tighten securely.
Needle-Threading Hook Removal and Replacement
To remove, lower needle-threader.
Remove screw from threader arm, as shown.
Push damaged hook out through threader arm.
To replace, insert new hook (thread slot up) from
the rear of the needle-threader through the space
between the threader arm and guide.
Align the holes in the hook body, needle guide,
and threader arm. Replace screw.
Lower the presser foot and "aise the needle bar
to its highest posirion.
Position slot ;n threader arm over oositioning
screw on neeale c;cmo.
NOTES: