1-79
S-104-100
Revised 09/2004
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Phones: +420 582 309 146 (Service), +420 582 309 286 (Spare Parts); Fax: +420 582 360 606
TRIM KNIFE ADJUSTMENT
Upper Thread Trimming for Adjustable Fly
During the machine cycle, when the sewing ends, the machine returns to the home position. However,
before reaching the home position, the needle thread trim action trims the front leg of the thread loop. To
check for the correct timing of the trimming action, perform the following steps:
1. Turn the left hand crank through a cycle until trip lever has been released. Turn the right hand stop
wheel until it locks. Continue turning the left hand crank until the cutting lever starts its downward mo-
tion. The lower thread trimming action should start its travel to the right. If the travel does not begin,
loosen screws
A
, and slide trip lever
B
forward or backward (forward will delay the trimming action;
backward will activate the trimming action earlier) as necessary. Once the adjustment has been made, re-
tighten screws
A
.
2. The travel of the trim knife assembly must be adjusted so the point of the knife does not travel beyond
the point of the left hand looper. To adjust, loosen screws
C
(located under actuator
D
) and rotate the
actuator
D
forward or backward (forward will increase the amount of travel; backward will decrease the
amount of travel) as necessary.
3. A minimum clearance of approximately 0.40 mm (.016”) must be maintained between the underside of
the cap of actuator
E
and the trim knife assembly. This clearance must exist when the trim knife assembly
is located over the right hand spreader stop, and away from the throat plate. To adjust, loosen nut
F
and
turn actuator
E
up or down to obtain proper clearance. Once the proper clearance has been obtained, re-
tighten nut
F
.