Brother BAS-600 - Troubleshooting Guide

TROUBLESHOOTING GUIDE
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Damaged rotary hook
Polish the rotary .hook
r- holding slot in the needle
plate.
holding slot.
Improper needle thread
1-
Needle thread tension.
1--
See "Thread tension., 1- •
tensaon.
r-
Bobbin case opener and
rotary hook gap.
1-
Set gap to 0.2 mm.
Improper needle and
Needle and rotary hook
1--
Set gap to 0.05 mm.
r- rotary hook timing.
t-r-
point gap.
Rotary hook
and needle
Set gap
to approx. 1.2
1-
1-
plate gap.
mm.
Needle bar
lift stroke
Adjust needle bar
lift
..... and height.
1-
stroke and height·
Insufficient
lubrication to
Rotary hook lubrication
-
Adjust lubricating oil
1-
rotary hook assembly.
-
supply.
Thread breaks
Improper thread take-up
Thread take-up spring
1-1-
-
-
See "Thread tension."
Skipped stitches
spring rension and stroke
stroke and tension.
r- Rotary
hook point
Polish rotary hook point.
damaged.
Improper needle
and
Set gap to 0-0. 15 mm.
-
needle guard gap.
-I Improper threading.
Threading.
See "Threading thread. •
Improper
1-
Needle direction.
1-
Install needle in proper
t- needle installation.
direction.
H Bent or blunt needle.
Needle.
Replace needle.
Scratch,
burr on cloth
1-
Cloth guide.
1--
Remove burr and polish.
1- "d
QUI e.
Seisure, thread jam in
Lubricate or replace.
1-
rotary hook race.
-1 Burr on edge of binder. Remove burr and polish.
Improper
-height.
cloth guide
-98-
From the library of: Superior Sewing Machine & Supply LLC