SINGER W312 Old - Manual (Page 38)

ADJUSTING BOBBIN WINDER
It may be necessary to adjust the position
of
bobbin winder tension discs at the
right front bed plate to align to the
bobbin on bobbin winder, asDeciaily,
when thread winds unsventy on bobbin,
!f the thread winds unevenly on bobbin
as shown jA), loosen set screw and move
the
bobbin winder tension discs slightly
to the left. If the thread winds as shown
(B), move the discs slightly to the right.
ADJUSTING AND
MOTOR BELT
To adjust motor belt, loosen the screw
(Aj securing the motor bracKet |B) and
move bracket up to loosen belt and down
to
tighten. When proper aajustment is
attained, tighten screw securely.
To remove motor belt:
* Remove top cover
9 Loosen screw (A) and move motor
bracket IB) to its highest position,
a -Slip belt off motor puily and then over
hand w h e e l.
9 Replace motor belt by slipping it over
hand wheel and then over motor oully,
« Adjust motor belt tension as noted
above.
38