Pfaff 3334 User Manual

Stop motion lever
1 mm
Starting lever
Regulating
screw
—/^--Sfop pin
Fig. 42 Adjusting the starting lever
(7) Starting Lever
There should be a clearance of about .04", or 1.0 mm, between the stop pin
of the stop motion lever and the reguloting screw {Fig. 42) when the machine
has stopped. If adjustment is required, turn the regulating screw in or out,
OS appropriate. A wider clearance gap would result in a greater delay when
depressing the treadle to start the machine.
f. Timing the Thread Nipper and Adjusting the Thread Tension
(1) Thread Nipper
The thread nipper should become operative when the machine has stopped
after having completed the last stitch. To adjust, loosen screw b (Fig. 44)
and set finger (22335) so that it is positioned as close to the near end of the
depression in the rim of the feed cam as possible when the machine stops.
When engaged, the thread nipper should exert just enough pressure to
permit the thread to be pulled through it smoothly. To adjust, loosen the
lock nut and turn screw a in or out, as appropriate (Fig. 44).
The thread must remoin trapped until the needle enters the material again,
ot which time the tripping segment should release the thread nipper. As the
machine makes the next stitch, the thread must be trapped when the take-up
Thread nipper spring
Needle bar
Fig. 43
Right Wrong
Wrong
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From the library of: Superior Sewing Machine & Supply LLC

Pfaff 3334 Specifications

General

Brand	Pfaff
Model	3334
Category	Sewing Machine
Language	English