Brother Model KH--830 Service Manual page 59

Trouble
Cause
Remedy
!
Note
No needle selection in 1. Bent needle. I . Replace the needle. See Instruction manual.
eiJhth cycle. 2. The holes on the needle bed 2. Replace needle bed.
.
I
lower plate has worn and
become larger.
No
needle selection
be- I . Carriage connection claw does I. Adjust relative position of clutch
tween needles
Nos. 90 not catch belt at carriage direc- and belt.
-100 at carriage direction lion gate.
gate.
I
2. Change knob is not set correctly. 2. Set the change knob correctly.
L
carria&e
Loclu in midway.
I . Too fmc puge. 1. Widen gauge.
See
Instruction manual.
2. L carriage wa.. not kept down . 2. Operate L carri.qe in the right way.
.
Drop stitches. I . Poor latch needle
open~tlon.
I . Replace needle. See lns~~:~~Ction manual.
2. Bent comb. 2. Adjust comb teetlt.
3. Feed ltoolc
is
out of position. 3. AdjU5t both
right
and left feed hook
4. Cam is out of position.
position.
5. Leahprlng is out of position. 4. Adjust cam position.
6. Separation cam does not work
S.
Adjust leaf spring position.
prope,rly.
6. Replace Separation cam.
7. The L<-arriage
is
turned back 7. Take care operation.
before passing the last needle.
Comb teeth catclt stitcltes.
I.
Too loose gauge . 1. M ake gauge fmer. See Instruction manual .
2. Yarn catches. 2. Make yam move smoothly.
3. Too
r ..
t operation. 3. Operate L carriase slowly.
4. Bent comb teeth. 4. Correct comb teeth.
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