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SECTION
4.
CARE FOR YOUR MACHINE
Replacing
the upper knife
To remove:
4, Turn off the power switch and unplug the machine.
4, Open the looper and side covers.
Disengage the upper knife (refer to page 60).
Remove the hexagon bolt, and remove the upper knife.
lq_ Stopper pin
(2) Upper knife
Hexagon bolt
(_) Lower knife
To attach:
t
Insert new upper knife into the groove of knife holder and
stopper pin, then tighten the hexagon bolt slightly.
41,Turn the upper knife holder to cutting position.
Turn the hand wheel toward you until the upper knife comes
to its lowest position. Loosen the hexagon bolt, and adjust
the position of upper
knife so that the edge of the upper
knife overlaps 0.8 to 1.5 mm (3/64")
from the edge of
lower knife as shown.
Then tighten the hexagon bolt firmly.
4) Close the looper and side covers.
_ 0.8
-
1.5
mm (3/64")
(_ Lower knife
_ Hexagon bolt
(_ Stopper pin
_'_ Upper knife
Cleaning
upper knife area
€, Turn off the power switch and unplug the machine.
(I, Open the looper cover.
Brush the waste chips to the front with the lint brush.
'_ You may use a vacuum cleaner to clean the upper knife
area or feed dog.
'_ The lower knife will last over one year in normal use.
However, if you run over a pin or a hard object, you may
need to replace both upper and lower knives at the same
time.
J
_
J
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