Table
ofContents
[A]
Model Plate Display ....................................................................................................................... 1
[B]
Specifications .................................................................................................................................2
[C]
Description of
Mechanism
.............................................................................................................3
[)
Needle bar
mechanism
...........................................................................................................3
~
Looper
mechanism
.................................................................................................................4
II]
Retainer
mechanism
...............................................................................................................5
[!]
Feed
mechanism
....................................................................................................................6
~
Presser foot lift
mechanism
...................................................................................................7
@]
Thread release
mechanism
......................................................................................
~-
.............7
[1]
Looper thread take-up
mechanism
.........................................................................................8
ffi]
Puller
mechanism
...................................................................................................................8
[2]
Lubrication.............................................................................................................................9
[D] Disassembly Procedures.................................................................................................................
10
[!]
Cover...................................................................................................................................... 10
--~-
\
11]
Presser....................................................................................................................................
11
[1]
Feeding ..................................................................................................................................
11
(!]
Retainer..................................................................................................................................
12
~
I...ooper
and
needle guard .......................................................................................................
12
[§]
Needle bar ..............................................................................................................................
13
[1]
Upper
and
lower shafts ..........................................................................................................
13
[E]
Assembly
and
Adjustment Procedures...........................................................................................
14
ITJ
Upper
and
lower shafts ..........................................................................................................
14
III
Needle bar ..............................................................................................................................
15
mLooper
and
needle guard .......................................................................................................
17
@]
Retainer ..................................................................................................................................
19
[I]
Feeding ..................................................................................................................................
20
lEJ
Presser....................................................................................................................................
21
[1]
Cover......................................................................................................................................
23
/-
.·\
---,
[F]
How
to Change
the
Roller..............................................................................................................
24
[G]
Disassembly and Assembly
of
the
Bottom
Metering Device ........................................................
27
[li]
Standard Adjustnlent ......................................................................................................................
30
[]
Needle bar height...................................................................................................................30
II]
Installation position oflooper................................................................................................
30
~
Needle and looper
timing
.......................................................................................................
31
I!]
Clearance between needle and needle guard .........................................................................32
!
,.---
III Installation position ofretainer ..............................................................................................32
[§] Installation position of
feed
dog
............................................................................................
33
[1]
Presser foot lift stroke............................................................................................................
33
[[]
Roller
feed
amount ................................................................................................................
34
[2] Thread tension........................................................................................................................
35
[ I ] Troubleshooting .............................................................................................................................
36