Replacing the upper knife – Sears OVERLOCK 385. 564180 User Manual
Page 41
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SECTIO^J 4. CARE FOR YOUR WACHiNt
Replacing the Upper Knife
To Remove:
(1) Disconnect the machine from the power supply.
(
2
) Open the looper and side covers.
(
3
) Disengage the upper knife,
I Refer to page 29.)
(
4
) Remove the hexagon bolt, and remove the
upper knife.
(T) Insert new upper knife Into the groove of knife
holder and stopper pm, then tighten the
hexagon bolt slightly.
@ 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 posi
tion of upper knife so that the edge of the
upper knife overlaps 0.5 to 1 mm (1/32") from
the edge of lower knife as shown above.
Then tighten the hexagon bolt firmly.
(
4
)
Close the looper and side covers.
The lower knife will last over one year in normal use. However, if you run over a pm or a hard object, it may be required to replace both upper and lower knives
at the same time.
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