HIGHLEAD GC0518-1 Manuel d'instruction Catalogue des pièces - Page 13
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24 ADJUSTMENT OF
KNIFE ENGAGEMENT
(Fig 24)
1 ) Position of movable knife (left) and
fixed blade:
See the illustration. The standard
distances from the needle center are
7.5mm and 7mm from the movable knife
(left) and fixed blade respectively.
2 ) Adjustment of knife engagement:
With the solenoid activated tum on
the machine. This rotates the thread
trimming cam which rotates the movable
knife (left). When the movable knife (left)
has moved to its farthest distance, the
standard engagement of the blade is
1.5mm to 2.0mm.
3 ) Adjustment of knife engaging pressure:
If a thread is poorly cut, particularly when
it is thick, slightly increase the engaging
pressure. This should solve the problem.
The engaging pressure can be adjusted
in this way: Loosen lock nut B and adjust
it by using adjusting screw A.
Moveable
7.5mm
knife (left)
Knife driving crank
1.5mm-2mm
Moveable knife (left)
Moveable knife (left)
Fixed blade
Fig 24
Fixed blade
B
A
7mm
Fixed blade
3mm