SINGER WHA-1 - Manual (Page 13)

Pig. 16
A sewing machine never needs
grease. All moving parts which
come in contact with others, must
be covered with a film of oil, and
should not be allowed to become
dry. Oil, when necessary, should
be applied at the points indicated
by the arrows in Fig. 16, a drop
of oil being sufficient at any one
place. Oil should be applied
freely at all contact points on the
underside of the machine. A few
drops of oil in the bobbin race
will help your machine to run
freely.
When oiling, insert the oil can
nozzle well into oil holes.
After oiling, run the m.achine
rapidly for a fe w minutes, so that
the oil may penetiate into the
bearings. For the proper care of
your machine oil -frequently.
Neglecting to do this tends to
shorten the life of the machine,
and may cause trouble and an­
noyance.