Adjustment of the Top Cover Device
- Model 845 exclusive -
21b
1.Remove: Mains lead
2.Select sewing program 10
"COVERHEM/CHAINSTITCH"
.
3.Turn handwheel towards you and make sure that the upper looper is set at disengaged
position.
4.Change the presser foot from standard A/B foot to Top Cover foot (part No. 11636).
5.Lower the presser foot.
6.Insert the top cover hook into the slot of the holder and fasten screw
"b"
.
7.Swing down a lever
"a"
with triangle thread guide.
8.Turn handwheel towards you and bring the top cover hook in front of Coverhem needles
(L0, L1 and L2)
9.Make sure that the gap between the top cover hook and Coverhem needle
"L0"
is 1.0 mm
( 1 ) as shown in Fig. 2.
10.If not, loosen screw
"b"
and turn screw
"c"
clockwise or counterclockwise to get the gap
1.0 mm.
11.Tighten screw
"b"
.
Summary of Contents for 745 -
Page 1: ...745 845 SERVICE MANUAL 2 2 5 5 1 3 5 NA 6 0 B 1 2 1 T P T P...
Page 18: ...a HEIGHT AND ALIGNMENT OF CLOTH PRESSER BAR 4a 5 b c 4 7mm...
Page 24: ...TIMING OF LOWER LOOPER 8a A B C D b a 5 2mm R1 Fig 1 Fig 2 Fig 3...
Page 51: ...ANNEX SETTING POSITIONS OF SL DF DIALS b c f d g e 2 1 C B A...
Page 61: ...M E M O...