Singer Centurion 121D200A - HOOK TIMING; NEEDLE GUARD ADJUSTMENT

HOOK TIMING
Proper clearance between needle and hook point, re
quires that the point of the hook shouid pass the nee-
die as closely as possible without striking or deflect
ing it. There shouid be .003 - .005 clearance bet
ween the two (Fig. A).
To adjust clearance, loosen bushing set screw (Fig.
B). With screwdriver placed as shown move entire
hook and bushing (Fig. C). Tighten bushing set
screw.
Hook Bushing
Set Screw
FIG. B
Insure that the needle guard prevents the
needle from contacting the hook point at
any time. If large needles are to be used it
may be necessary to string the needle
guard back to allow hook point closer to
needle (Fig. D).
6
.003 • .005
Rat of
Hook Point
To Needle
FIG. A
FIG. C
Needle Guard
FIG. D
From the library of: Superior Sewing Machine & Supply LLC