APQS Lenni - Page 147

147
5-2-2021
APQS.com
General Maintenance
PROBLEM PROBABLE CAUSE
Top thread frays or breaks
A.
B.
C
.
D
.
E.
F
.
G.
H
.
I.
Moving machine too slowly in manual mode
M
otor is running too fast in manual mode
D
amaged needle
Bu
rr on sewing hook
B
urr on needle plate
N
eedle rubbing side of needle plate hole
I
mproper threading
N
eedle size too small compared to thread
Poor
thread quality
Skipping stitches
A.
B.
C
.
D
.
E.
F
.
G.
H
.
Needle is bent or improperly set
H
opping foot too high
H
ook too far from needle
H
ook and needle out of time
D
amaged hook point
T
op tension too tight
E
ncoder wheel slipping
I
mproper electrical connections
Thread loops on quilt back
A.
B.
C
.
D
.
E.
F
.
Moving machine too fast
M
otor is running to slow for manual movements
T
op tension is too loose
I
mproper threading
B
urr on sewing hook
F
uzzy, linty thread
Machine fails to run
A.
B.
C.
D.
E.
F.
G.
Master power switch off
M
otor speed gauge set to “0” or “turtle” icon
B
reaker tripped in electrical panel
B
lown fuse on quilting machine
F
aulty extension cord (if used)
Outlet failure
Po
wer cord near switch loose
Machine too noisy
A.
B.
C.
D.
E.
Hook assembly is dry and needs oil
Hook assembly damage
Damaged needle
Hopping foot set too low
Loose screw in
needle plate
Machine hard to push while quilting
A.
B.
C.
D.
Quilt rubbing on leveler bar
I
mproper hopping foot height
T
hread wrapped around wheels
Channel lock engaged
Machine hard to push
w
ithout machine running
A.
B.
C.
Quilt table not level
T
hread wrapped around wheels or bearings
C
arriage wheels need cleaning to remove oxidation/lint/thread