Table Of Contents - Brother b831 Service Manual

CONTENTS [Model B837 B838]
CDISASSEMBLY PROCEDURES\ 48
VB837, B838 J
(T) Cover 48
(H Tension release lever 49
Uj Presser foot and walking bar 49
G] Needle bar and needle thread take-up 51
UlFeed assembly 51
( ASSEMBLY PROCEDURES ) 52
[0 Feed assembly 52
[O Needle bar 52
(H Walking bar and presser foot 53
[T) Tension release lever 57
[O Cover 58
/STANDARD ADJUSTMENT^ 59
\^B837, B838 J
Q] Needle and feed timing adjustment (standard) .. 59
UlFeed dog adjustment in back and forth
directions 60
Ul Needle and rotary hook timing adjustment 61
0 Clearance between rotary hook and
needle plate 62
0 Clearance between rotary hook and
bobbin case opener 62
0 Presser foot height adjustment 63
0 Feed dog height adjustment 64
0 Vibrating presser foot and lifting presser foot
and needle timing adjustment 65
0 Upper feed adjustment 65
0 Vibrating presser foot and lifting presser foot
vertical stroke adjustment 66
"GAUGE PARTS LIST FOR
DOUBLE NEEDLE LOCK STITCH
sSEWING MACHINES 67
( others) 75
(XlTop cover thread guide 75
Ul Adjusting upper thread length 75
Ul Anti-spinning spring 76
[H Bobbin 76
G]To thread bobbin cases (8835. 8836) 76
(troubleshooting guide) 77