Brother CB3-B913 - Check Point

{ TROUBLES~OOTIN _ G )
Trouble
I
I
Cause
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I
Check point
I I
Remedy
I Page l
Button ins erted
Inse rt button so its
imprope rl y.
Button ho le dir ection. h oles ar e in t he cor re ct
direc ti on.
Longitudinal feed lever
Longitudinal fe ed l ever
Adju st long itudin a l
and po int er p os ition ed f eed leve r and po in ter
improperly.
and pointer positions.
to b utt o n ho le s p aci n g.
Needle breaks.
Wrong thread loop er
Thr ead lo oper timing.
Adjust
thread loop er
timing. timing.
Wrong n ee dle an d Needle and looper Adju st ne edle an d
l
ooper timing. timing. looper timing.
T oo g r ·eat a clearance Adjust c le aran ce
between n ee dle and
Needle clearanc e.
betwe e n n ee dle a nd
l oo per.
l oope r.
Needle bar hei ght
Needle bar height.
Adjust needle bar
incorrect.
height.
Stitches skip.
T oo g r ea t a cle aranc e
Clearance between
be tween ne ed le a nd
needle and needle guard.
Adju
st needle gua rd.
ne ed le guar·d.
Remaining thread Remaining thread
Adjust remaining
length too short. length.
t
hr ea d len gth .
Sub-tension di sc floats
Ten sion di sc float.
Adjust s
ub- te nsion disc
improperl
y.
float.
Stitch es loose.
Sub -tension too weak. Sub-tension tensio n.
Adju st sub-tension
tension.
Needle installed
In s tall n ee d le with its
Needle dire ction.
l on g g r· oove facin g
inc orrect l y.
fron t.
Sub-tension di sc fl oat Tension disc flo at
Adju st sub-tension.
timing
wr ong. timing.
Thr ead breaks.
Needle too thin for
Needle
and th ea cl.
R efer to in st ructions
thread.
for needle
and thr ead .
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From the library of: Superior Sewing Machine & Supply LLC