How to replace stationary knife, How to exchange light bulb, How to adjust presser foot pressure – SINGER 14U 34B/234B User Manual
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16. How to replace stationary knife
The stationary knife should be changed when it becomes dull.
The stationary knife can be replaced according to the following steps, however if there are any difficulties
experienced, call your Singer representative to make the adjustment.
(1) Be sure that the power line plug is disconnected from
the wall receptacle.
(2) Open the looper cover and set the movable knife in the
non-operating position (see page 12).
(3) Loosen the stationary knife set screw and remove the
stationary knife.
(4) Place a new stationary knife in the groove of the
stationary knife holder, align the cutting edge level
with the top surface of the throat plate and tighten set
screw.
(5) Return the movable knife to its original position.
17. How to exchange light bulb
Danger:
Always unplug before relamping.
Light bulb (available from your Singer Dealer) is a bayonet
type 12 volt, 6 watt bulb.
Disconnect power line plug.
Remove light cover as shown in figure, turn bulb to left
and remove. To replace, push bulb into socket and turn
to right.
18. How to adjust presser foot pressure
The presser foot pressure of this machine is
preadjusted at the factory to suit the sewing of
medium weight fabrics.
It may become necessary to adjust the pressure
in the case of delicate or heavy weight fabric.
For light weight fabric — Decrease the pressure
(as shown at left).
Heavy weight fabric — Increase the pressure
(as shown at left).