Brother SB3734T Service Manual page 10

Outline of Mechanism Driveline
(C) Movement of upper blade
Upper knife Feed bar
Upper knife arm
Upper knife link Driving shaft Pulley
plate assy eccentric wheel
Upper knife holder
Upper knife
Feed bar eccentric wheel
Upper knife
Upper knife plate assy
Driving shaft
Pulley
Upper knife link
Upper knife holder
Upper knife arm
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