Hikari H9199, Instruction Manual Book And Parts Book, Page: 70 / 99

INSTRUCTION MANUAL
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3) Setting the cutting pressure
When performing setting tasks within the hook area, both knives should preferably remain in the machine. Thus avoiding
unnecessary adjustment work.
< Standard checking>
The threads must reliably be cut with the lowest pressure possible. Low cutting pressure reduces the wear! Two of the
thickest threads to be sewn must reliably be cut simultaneously.
< cutting pressure adjust>
(1) Turn back the cutting pressure screws 1.
(2) Swivel forwards the hooked knife 3.
(3) Set the fixed knife 2 against the hooked knife 3 by screwing in the cutting pressure screws 1.
(4) Alternately lay the thread to be cut to the right and to the left.
(5) Adjust appropriate cutting pressure screw.
(6) If the return spring 4 does no longer bring the cutting mechanism to its starting position, then the cutting pressure is too
high! The fixed knife must be replaced against a new one.
< NOTE!>
A regrinding of the fixed knife is allowed to a minor degree! If the knife loses a lot of its length, it can no longer cut.
A new setting of the hooked knife
cannot
compensate it.