Adjustment
13
.04.08
Needle rise, hook-to-needle clearance, needle height and needle guard
( 1474E1 )
Requirement
With the needle bar positioned at 1.8 mm after the BDC, the following must apply:
1. Both hooks must be pointing to the middle of the needle and be spaced at a distance
of
0.05 - 0.1 mm
from needles.
2. The top edges of the eyes of the needles must be
0.8 - 1 mm
below the hook points.
3. The needle guards
10
must lightly touch the needles on the left and right hand side.
●
Loosen screws
1, 2, 3, 4, 5, 6
and
7
.
●
Slightly loosen screws
8
.
●
Position the needle bar 1.8 after its BDC.
●
Insert the adjustment pin in hole
9
and apply pressure.
●
Position the hook points at the middle of the needles, taking care to ensure that the
needles do not shear off because of the needle guards
10.
Fig. 13 - 07
7
7
8
8
9
10
6
5
4
3
2
2
1
12
11
13
14
4
3
0.8 - 1 mm
13 - 11