Brother LH4-B800E Service Manual page 94

Adjusting the clearance between needle and hook point
0.01 - 0.08 mm
w
Loosen the screws e and move the rotary hook r forward or back until there is a clearance of 0.01 to 0.08 mm
between the needle q and the hook point w.
Needle plate thickness
q
Application
Clothing
(-2)
K n i t t e d
wear
3.2 mm
Knitted
wear
(-3)
Long-hole
specifica-
tions
(-5)
Thin knitted
wear
2.5 mm
LH4-B800E
Gauge
S13595-001 Gauge 815-2
+0.1
13.5
0
-2
S13596-001 Gauge 815-3
+0.1
12.7
0
S13597-001 Gauge 805-2
+0.1
14.2
0
805-2
4. Adjustment
e
r
+0.1
2
16
0
-3
+0.1
2
16.2
0
+0.1
2
16.7
0
4 - 7