−
55
−
Slide blocks
7
of elevating bosses
of the upper and lower needle bars
Groove cam wheel
8
Grease the whole surface of the
internal groove.
Period
Every six
months
Every six
months
Grease
Grease
(Lower needle bar)
(Upper needle bar)
7
8
7
(3) Consumable parts replacing period table
• The needle bar contains the following consumable parts.
The following table indicates the time to replace these parts. So periodically replace the respective consumable
parts referring to the table below.
Expendable part
1. Stop spring
(25217704)
2. Snap ring
(G5513340000)
3. Needle holder pin
FLS-350N : 25250002
FLS-350NA • NB : 25250010
FLS-351NA : 25234105
4. Rubber washer
(16661704)
5. Thread guide brush
(25240102)
Time for replacement
3 to 6 months
2 to 6 months
0.5 to 1.5 years
0.8 to 1.5 years
0.5 to 1.5 years
Description
In addition to the regular time for replacement, replace them
if it breaks when disassembling the needle bar.
It is recommended to replace the snap ring earlier than the
designated time for replacement. If any gap is found when
fitting the snap ring in the groove on the needle bar support
cylinder or the snap ring is damaged, has burrs or has worn
out, replace the snap ring with a new one.
If the top end of the needle holder pin becomes chipped,
replace it with a new one. If the inside diameter section of
the needle holder pin is clogged with dust, remove the dust
with a drill supplied with the unit.
The rubber washer cracks circularly. Replace the rubber
washer with a new one before it totally breaks. If the rubber
washer has become flat, adjust the timing of the needle
bar.
If the rubber washer is crushed, adjust the needle bar timing.
If the brush bristles have worn out and come off, replace
the brush with a new one.
Trouble
Needle
breakage
Needle bar is
pushed against
the bearing.
Needle bar
shifts out of
position.
Blunt needle tip
Needle
breakage
Needle
breakage
Thread
breakage
8