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4) After adjustment of the tension, attach throat plate
auxiliary plate 1 and the various covers.
(3) Replacing the bottom feed roller
1) Turn presser lever 5, raise feed foot 6, and
remove throat plate auxiliary plate 1, hook cover
asm. 2, frame cover 3 and bottom feed cover
4.
2) Loosen inner hook presser setscrews !1 and remove
inner hook presser !2.
3) Remove bottom feed roller !0 and replace it with a
new one. Slightly apply the exclusive grease
supplied as accessories (Part No. : 40006323)
inside the roller.
4) Make sure of the bottom feed belt tension.
5) After adjusting the tension, attach throat plate
auxiliary plate 1 and various covers.
Feed pith error will be caused unless
the tension is proper.
1) Turn presser lever 5, raise walking foot 6, and
remove throat plate auxiliary plate 1, hook cover
asm. 2, frame cover 3 and bottom feed cover 4.
2) Loosen setscrews 8 in the bottom feed tension
plate.
3) Replace bottom feed belt 7 with a new one.
Adjusting procedure of the belt tension
Adjust bottom feed tension plate 9 to the left or
right to adjust the tension.
(Tension is increased in direction A.)
Belt tension value :
The belt has to be bent by 3 mm when it is pressed
with a load of 1.5N (150gf).
1
2
3
4
5
6
Press the center
7
8
9
A
(2) Replacing the bottom feed belt
!1
!2
!0
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