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Manuals
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Brother Manuals
Sewing Machine
b831
Service manual
Brother b831 Service Manual
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Also See for b831
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Service manual
(84 pages)
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Table Of Contents
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Contents
Table of Contents
Troubleshooting
Bookmarks
Table of Contents
Contents
Table of Contents
Product View
Technical Data
Motor Pulley Data
Motor Pulley Change
Upper Shaft and Needle Bar Mechanism
Needle Feed Mechanism
Lower Shaft and Rotary Hook Mechanism
Feed Mechanism
Thread Trimmer Mechanism
Tension Releaser Mechanism
Reverse Mechanism
Thread Wiper
Needle Bar
Top Feed Mechanism
Disassembly Procedures
Assembly Procedures
Q] Needle and Feed Timing Adjustment (Standard)
Thread Cutter Timing
Lower Belt Wheel Position
Adjustment of Needle Bar to Presser Bar Gap
Needle and Rotary Hook Timing Adjustment
Needle to Rotary Hook Point Gap
Needle Bar Rise and Height
Rotary Hook to Needle Plate Gap
Rotary Hook to Bobbin Case Opener Gap
Presser Foot Height Adjustment
Feed Dog Height Adjustment
Tension Release Adjustment
Stitch Length Adjustment
Reverse Feed Solenoid Adjustment
Reverse Switch Adjustment
Thread Wiper Adjustment
Slider Adjustment
Bobbin Thread Clamp Spring
Movable and Fixed Knife Adjustment
Installing the Movable and Fixed Knives
Knife Main Lever Roller
Knife Driving Lever Adjustment
Position Detector Adjustment
Corner Sewing Position Adjustment
Push Lever Position Adjustment
Slide Shaft Adjustment
Slide Shaft Support Bracket Adjustment
Stop Lever Arm Spring Pressure Adjustment
Needle Bar Stop Adjustment
Presser Foot Height
Timing Belt Replacement
Disassembly
Assembly
Thread Cutter Timing Adjustment
Needle and Feed Timing Adjustment
Feed Dog Adjustment in Back and Forth Directions
Excessive Presser Bar Walking Presser Bar Gap
Clearance between Needle and Rotary Hook
Clearance between Rotary Hook and Bobbin Case Opener
Presser Foot Height Adjustment
Feed Dog Height Adjustment
Vibrating Presser Foot and Lifting Presser Foot and Needle Timing Adjustment
Upper Feed Adjustment
Vibrating Presser Foot/Lifting Presser Foot Vertical Stroke Adjustment
Gauge Parts List for Double Needle Lock Stitch Sewing Machines
Gauge Parts List
(7.9 MM) 151528-001
1/4" (6,4 MM) 151538-001
3/1 6" (4.8 MM) 151524-001
5/16" (7.9 MM) 151540-001
/4" (6.4 MM) 151544-001
Adjusting Upper Thread Length
Anti-Spinning Spring
Top Cover Thread Guide
Bobbin
Presser Foot
Troubleshooting Guide
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Table of Contents
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Q] Needle and Feed Timing Adjustment (Standard)
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This manual is also suitable for:
B835
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