Singer 1200-1 - Page 15

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on the stud, then insert the tension spring (F) in
the indicator with the first half-turn of the spring
below (he stud or away from the pointer of the indi-
cator as shown in Fig. 26. Xmv place index flange
stop washer (E) on t lie stud \vii h its extension toward
the indicator pointer as in Fig. 26. if spring and
stop washer are in correct position, the extension
(S) will clear the first coil of the spring as shown in
Fig. 27.
Place index flange (D, Fig- 26) on the stud, turn
it so that the number 1 is opposite the pointer on
the tension indicator ((".), and press it inward until
the thumb nut (15) can be turned onto the slud. Try
engaging the pin (C) in different holes in the flange
until one is found which permits the full range of
tensions from light to heavy to be produced with
one revolution of the thumb nut.
FIG. 27
Lower the presser bar to relieve the pressure on
the pin (J, Fig. 26). Replace the complete tension
assembly in the machine, having the long lug
(K, Fig.' 25) enter the hole (U, Fig. 28), the pointer
(G, Fig 26) at the top, and the thread take-up
spring resting on the regulator plate at (V, Fig. 28),
as shown in Fig. 20. Push the complete tension in
as far as it will go, then firmly lighten the set
screw (A).
The tension on the thread take-up spring (T, Fig.
26) should be just sufficient to take up the slack of
the needle thread until the eve of the needle reaches
25
the goods in its descent. A slight variation in the
tension on the take-up spring may be secured by
loosening the set screw (A, Fig. 28) and turning the
tension stud, with the indicator (G, Fig. 26), to
the left for more tension or to right for less tension.
However, if the correct tension cannot be secured
without turning the indicator pointer (G) to a posi-
tion inconvenient to read, remove the assembly
from the machine, disengage the end of the spring
from the groove (Q, Fig. 2o) in the tension stud,
revolve the spring and place its end in the groove
which produces the correct tension.
U
FIG. 28
Ordinarily, the tension on the needle thread is
regulated by turning the thumb nut (11, Fig. 26),
but if the required tension cannot be produced by
this means, adjust the tension as follows: Press in
the index flange (D, Fig. 26) to disengage the pin (C)
in the thumb nut (B) from the flange and reset the
pin in one of the other regulating holes in the flange,
turning the thumb nut inwardly to increase the
tension or outwardly to decrease it.