SINGER 331K4 - Manual (Page 4)

LUBRICATION AND CLEANING
Use SINGER* OIL, “TYPE B” or “TYPE D”. Use
“TYPE D” OIL when an oil is desired which will
produce minimum stain on fabrics.
A machine in continuous use should be oiled fre­
quently. Frequency is dependent upon the speed at
which the machine is operated and the type of work
being done. Basically the machine needs oiling at
least twice each working day.
Before starting the machine, at the beginning of the
day and again after the midday recess, apply a few
drops of oil at each of the oiling points on the machine.
Arrows indicate oiling points in Figs. 2 through 5.
Never attempt to oil shuttle race (See Fig. 5) through
holes in throat plate.
BOBBIN WINDER LUBRICATION
Oil bobbin winder occasionally by applying a few
drops of oil to oil wick in bobbin winder frame, as
instructed in Fig. 11, page 7.
CLEANING
Clean out all lint and abrasive matter from around
the shuttle and between the feed rows on the under­
side of the throat plate.
Close all covers after oiling and cleaning. Wipe off
excess oil from surfaces of machine that may come in
contact with material.
Fig. 2. Oiling Points—Front View Fig. 4. Oiling beneath Machine Bed
Fig. 3. Oiling Points—Rear View Fig. 5. Oiling Points behind Face Plate and in Shuttle Race