Pfaff 141 User Manual

t. General
• Since the operation of the machines listed on the title page is more or less the same
the general instructions compiled in this book apply to all of them.
Additional instructions for the Pfaff 141-705/03; 141-705/03-725/01; 142; 143-705 03-
144; 145; 146; 151; 153; 552-748/01; 543-712/..; 546-748/01; 4141; 4145 and -900'..
appear at the back of this booklet.
We reserve the right to make alterations serving progress. The illustrations in this book
are also subject to change.
It is recommended to run these machines at the following top speeds:
3 000 s.p.m. Pfaff 4141 2 200 s.p.m.
Pfaff 141 and 144 2 900 s.p.m. Pfaff 545 H3 2100 s.p.m.
2 800 s.p.m. Pfaff 546 H2 1 300 s.p.m.
Pfaff 151 and 544 2 700 s.p.m. Pfaff 546 H3 i 800 s.p.m.
Pfaff 153 and 542 2 600 s.p.m. Pfaff 545 H4 i 700 s.p.m.
^ 2 500 s.p.m. Pfaff 4145 1 600 s.p.m.
Pfaff 145 and 541 2 400 s.p.m. Pfaff 546 H4
2 300 s.p.m. and 543-712/.. 1400 s.p.m.
When sewing tightly woven and heavily dressed materials, the sewing speed should be
reduced In order to prevent overheating of the needle.
The maximum speed of two-needle machines decreases as the needle gauge increases.
The maximum speeds which can be attained with machines fitted with special attach
ments or trimming mechanisms are often far below the recommended top speeds be
cause the nature of the work and the thickness of the material tend to limit the ma
chine s capacity. If the maximum speed is exceeded, trouble may develop chiefly in the
trimming mechanism.
To avoid trouble in the mechanism, run the machine at about 75 per cent of its top
speed until the parts which are in movable contact have become thoroughly glazed by
their action upon each other. This should normally be the case after about two weeks'
constant use.
All machines are regularly equipped with a fixed pulley which is cast in one with the
ba ance wheel. If desired, however, these machines can be supplied with a disengage-
ible pulley.
If fitted with the latter type pulley, the machine is dispatched with the sewing mecha
nism disengaged. To engage this mechanism for sewing, hold the balance wheel steady
with your left hand and turn the large lock nut clockwise.
2. Fundamentals of machine operation
Before you put the machine in operation for the first time, carefully remove all dust
which has accumulated in transit and oil the machine thoroughly (see Chapter 3).
on the machine only with Pfaff sewing machine oil which Is non-resinous and acid-free.
Check to make sure the finger, take-up lever and belt guards are properly fitted.
Never run a threaded machine unless you have fabric under the presser foot or the
vibrating presser.
Before you start sewing, lay both threads back under the presser foot
From the library of: Superior Sewing Machine & Supply LLC

Pfaff 141 Specifications

General

Brand	Pfaff
Model	141
Category	Sewing Machine
Language	English