21.
Lubricating
the
machine
Since
Pfaff
machines
145
are
fitted with
alternating
pressers,
they
have
a
num
ber of additional oiling points which are marked by arrows in Figs. 22 and 23. Of these,
particularly the points of friction at the needle-bar-end of the machine, such as the
needle bar (inside needle bar frame in Fig. 22) and the sleeve take-up with its round
shank (behind needle bar in Fig. 22), require thorough and regular lubrication.
All
moving and rotating parts should be oiled regularly. To prevent soiling of the work
through dripping oil, sew a few seams on a piece of scrap material to absorb all ex
cess
oil.
Never try to remedy certain faults by applying excessive quantities of oil. Excessive
oiling
will
merely soil the work. Tnerefore, oil the machine sparingly, but regularly.
22.
Setting
the
foot
lift
To
adapt
the
foot lift to the thickness of the material to be sewn, loosen wing nut F
(Fig. 23) and adjust the position of lifting eccentric connection H in the slot of the lift
ing crank. Move the connection upward for a higher foot lift, or downward for a lower
foot
lift.
Additional
instructions
for
Pfaff
machines
151
and
153
Pfaff machines 151
and
153
are
single-needle sewing machines fitted with compound
feed
and
ordinary
drop
feed, respectively. Both have the vertical rotary hook
arranged
on
the
left of
the
needle.
The
Instructions
given in
Chapters
1-14
appy
to
them
also.
24
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