Brother B830 Series User Manual

CONTENTS [Model 8831 · 8832 · 8835 · 8836 · 8882]
C
Page
NAMES OF MAIN PARTS)............. 1
(SPECIFICATIONS) . . . . . . . . . . . . . . . . . . . . . . 3
(MECHANISM)........................... 5
[]Upper shaft and needle bar mechanism . . . . . . . • 5
[!)Needle feed mechanism . . . . . . . . • . . . . . . . . . . . • . 5
[!] Lower shaft and rotary hook mechanism . . . . . . . 6
[!] Feed mechanism . . . . . • . . . . . . • • . . . . . . . . . . . . . . . 6
III Thread trimmer mechanism . . • • . . . . • . . . . . . • • . . 7
[I) Tension releaser mechanism ...............• ;. 7
[II Reverse mechanism . . . . . . . . . . • . . . . . . • . . . . . . • . 8
(!]Thread wiper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
[!J Needle bar (left and right) mechanism types
8835 and 8836 . .. . .. .. .. .. . .. .. .. . . .. . .. . .. 9
@)Top feed mechanism types 883 7 and 8838 10
DISASSEMBLY PROCEDURES 11
B831,B832,B835,B836,8882
[]Cover . • . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
[1] Presser mechanism . . . . . . . . . . . . . . . . . . . . . . . . . . 11
[!]Thread wiper . . • . . . . . . . . . . . . . . . . . . . . . . . . . . . . • 12
[!]Rotary hook. lower shaft and
thread trimmer mechanism .
• . . . . . . . . . . . . • • . . . 12
III Reverse mechanism . . . . . • . . . . . . • . . . . . . . . . . . . • 14
[!]Needle bar rocking shaft mechanism . . . . . . . . . . . 15
[II Reverse switch mechanism . . . . . . . . . . . . . . . . . • . 1 5
(ASSEMBLY PROCEDURES) ........... 16
[]Needle bar rocking mechanism . • . . . • . . . . . . . • . . 16
[1] Lower shaft. thread trimmer and
rotary hook mechanism . . . . . . . . . . . . . . . . . . . . .
• . 16
[!] Presser mechanism . . . . . . . . • . . . . • . . . . . . . . . . . • 21
[!]Thread wiper .......••.....................•• 21
(1] Reverse switch mechanism . . . . • . . . . . . . . . . . . . . 23
[!]Reverse mechanism . . . . . . . . . • . . . . . . . . . . . . . • . . 23
[II Cover • . . . . . . . . . • . . . . . . • . . . • . . . . . . . . . . . . . . . . . 24
STANDARD ADJUSTMENTS . . . . . 25
B831,B832,B835,B836,B882
lil Needle and feed t1mmg (8831) . . . . . . . . . . . . . . . . 25
(1] Adjustment of needle bar to presser bar gap
(Models 8831. 8832. 8835. 8836. 8882) . . . . . 28
[!]Needle and rotary hook timing adjustment • . . . . . 29
[!] Rotary hook to needle plate gap . • . . . . . . . . . . . . . 31
II] Rotary hook to bobbin case opener gap . • • . . . . . 31
[!]Presser foot height adjustment . . . . . • . . . . • • . . . . 32
[II Feed dog height adjustment .. .. . . • • . • .. . . . . .. 33
(!]Tension release adjustment . • . . • . . . . . . • • . . . . . . 34
[!]Stitch length adjustment . . . . . . . . . • • . . . . . . . . . • . 35
(!ID Reverse feed soleno1d adjustment . . . . . . . . . . . . . 36
[ill Thread wiper adjustment . . . . . . . . . . . . . . . . . . . . . 37
lliJ Slider adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
[!!]Movable and fixed kn1fe adjustment . . . . . . . . . . . . 40
IE) Knife mam lever roller . . . . . . . . . • . . . . . . . . . . . . . . 42
ffi) Knife drcving lever adjuStment . . . . . . . . . . . . . . . . . 42
@] Position detector adjustment . . . . . . . . . . . . . . . . . . 43
ill) Corner sewmg pos1t10n adjustment
(8835. 8836) .. . .. . . . .. . .. .. .. .. . . . .. . .. .. .. 43
[!!] Timmg belt replacement • . . . . . . . . . . . . . . . . . . . . . 4 7
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From the library of: Superior Sewing Machine & Supply LLC

Brother B830 Series Specifications

General

Brand	Brother
Model	B830 Series
Category	Sewing Machine
Language	English