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FRONT VIEW & MAIN PARTS
Main Parts
© Pressure control knob
@ Left needle thread tension (blue)
@ Right needle thread tension (red)
@ Upper looper thread tension (yellow)
© L o w e r looper thread tension (green)
© T h r e a d guide pole
© T e n s i o n release lever (Model 624)
® Spool pin
© C o n e holder
© Spool pin base
© ON/OFF switch
@ Stitch length slide
© Differential feed control slide (Models 6 2 4 & 614)
@ Needle clamp
© Presser foot
® Needle plate
© Side cover
@ Front door
@ Flywheel
® Foot control