6. ADJUSTMENT
The machine has been properly adjusted before shipment from
the factory. But if it needs re-adjustment for repair or
replacement parts, proceed as follows; When adjusting, make
sure that the electric wiring plug is removed from the consent.
6-1 Needle and Looper
Check the distance between needle center and looper edge.
Turn the pulley by hand until the looper reaches its right
furthest position, while keeping the clearance of 5mm between
needle center and looper edge.
1)
Confirm whether or not the distance between centers
of ball joint (A) is being kept 87mm. Also pay
special attention to the strict distance of 87mm, and if
not, it will prevent you to adjust every part correctly.
2)
Turn the pulley again by hand until looper reaches its
left furthest position, while keeping the clearance of
5mm between needle center and looper edge to loose
nuts (a) and (b) of joint rod (B). Fig. 2
In case the distance between centers is more than
5mm, turn joint rod (B) to “S” direction to decrease
it.
In case the distance between centers is less than
5mm, turn joint rod (B) to “L” direction to increase
it. Fig. 2
Make sure that the nuts (b) has left-handed thread.
6-2 Needle Height
When the looper moves left and right to turn pulley by hand,
the looper and the needle shall be adjusted in such a way that
the bottom of both holes will be entirely corresponded as
shown in Fig. 3.
1)
Check to make sure the needle is set in the needle bar
as deep as it will go by loosening the needle bar
clamping nut.
2)
Make sure of setting a needle with its concave part
facing correctly toward the looper when the needle is
just going up from the lowest position.
3)
Should it be necessary to change needle height, first
remove the upper face plate.
To raise the needle bar....
Loosen the screw (a), lower the needle bar
connection to obtain proper distance required and
tighten it. Then, loosen the screw (b), raise the
needle bar until the needle bar connection touches the
needle bar connecting stud and tighten it.
To lower the needle bar....
Loosen the screw (b), lower the needle bar to obtain
proper distance required and tighten it. Then, loosen
the screw (a), fix the needle bar connection at the
place where it touches the needle bar connecting stud
and tighten it.
4)
Check once again if the direction of concave part of
needle is correct or not.
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