Brother SB3734T Service Manual page 8

Outline of Mechanism Driveline
(A) Up and down movement of needle bar
Needle bar
connecting link
Needle bar
connecting stud
Needle bar
Needle
Needle bar
connecting stud
Needle bar connecting link
Needle bar
Needle
Needle bar
Needle bar rod
driving lever
Needle bar driving lever
Needle bar eccentric wheel
1 - 3
Needle bar
Driving shaft
eccentric wheel
Needle bar rod
Driving shaft
Pulley
Pulley