−73 −
2) Pat No. of frame support plate bolt
1 Semi-sunken type
Support plate bolt (A) 13155007 x4
Locknut NS6240630SE x4
Washer WP1002036SE x4
Spring washer WS1002560KR x4
2 Fully-sunken type
Support plate bolt (C) 13155106 x2
Support plate bolt (D) 13155205 x2
Locknut NS6240630SE x12
Washer WP1002036SE x12
Spring washer WS1002560KR x4
Difference of support plate bolts (A), (C) and (D)
Entire length under the neck and length of threaded part
Entire length Length of threaded part
Support plate bolt (A) 69 39
Support plate bolt (C) 137 107
Support plate bolt (D) 149 119
69 mm
39 mm
137 mm
107 mm
149 mm
119 mm
Support plate bolt (A) Support plate bolt (C) Support plate bolt (D)
1. When the sewing machine is used for many hours, cartridge filter
1 may be clogged with dust.
When this state continues, oil is not fed through cartridge filter 1
and abnormal worn-out or seizure of the sewing machine will be
caused.
* Normally, be sure to check cartridge filter 1 every 6 months,
and clean or replace it.
2. Inspecting/replacing procedure
1) First, remove drain screw 2.
2) Remove setscrews 3 and remove upper cover 4 toward right
above.
(Caution) When upper cover 4 is moved in the lateral direction,
the oil amount indicating rod or the filter may be damaged.
3) Remove and inspect cartridge filter 1. If cartridge filter 1 is
clogged with dust, clean it or replace it with a new one.
4) Insert cartridge filter 1 in place and install upper cover 4 with
setscrews 3.
* Part No. of cartridge filter : 11843208
(6) Inspection and replacement of the cartridge filter
1
2
3
4
(Unit : mm)