Reliable MSK-8420B instruction manual Operation

4. Operation

4.1Coordination between needle, thread and sewing material

Please use needle DP		17,Nm125-180.The coarseness
of needle	should be in accordance with the nature of
material.	If stitch on heavy duty material with a slim
needle, the needle will		be easily bent, skip or thread

breakage occurs, on the contrary, stitch on tightly woven

material with	a very coarse needle, the material	will
be destroyed	with over-big needle. So the needle	and
thread should	be properly selected.

4.2 Needle installation(Fig.13)
Turn the balance wheel to lift					needle bar		to the
highest	position,	loosen Needle Set Screw A					, fully
insert the needle shank upto the bottom of							needle
socket,	keeping	the long grooves			of the	two	needles
opposite with each			other, then	tighten Screw			A , For
single	needle, keep		the long	groove of		needle facing
the left of the operator. See Fig (b).
Note: Fig.(c) : insufficient insertion.
	Fig.(d) : wrong direction of needle long groove
	in insertion.

4.3 Winding the Bobbin thread

4.3.1Winding method(Fig.14)

1)Install bobbin A to bobbin winder spindle B .

2) Pass thread		C from spool through the eye		1 on
tension bracket		E . Pass ti between tension	discs 2 ,
and	then wind the end of the thread a few		turns	on
the	bobbin.

3)Push stop latch thumb lever D down to lock the bobbin, the winder pulley F is thereby pressed on belt G .

4)Start the machine to wind thread.

Note when thread is wound without sewing opera- tion, be sure to keep the presser foot lifted.

5)When the thread is fully wound, the bobbin winder stop latch automatically release the bobbin winder, thus stopping the winding motion.

	13
A
	clearance
long groove
	(c)
(a)
	single needle
	long groove leftward
(d)	(b)
	14
	F
	1
	E
	2
	G
	D
	C
H	B
	A

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