SEWING MACHINE DIV.20 MODEL 385. 17822490
NEEDLESWING
MECHANICAL ADJUSTMENT
TO CHECK:
IF THE NEEDLE BAR MOVES SIDEWISE WHILE THE NEEDLE IS IN THE FABRIC IN ZIGZAG
STITCHING, ADJUST IN AS FOLLOWS:
(THE NEEDLE SHOULD STARTSWINGING WHEN 2 TO 3MM ABOVE THE NEEDLE PLATE.)
ADJUSTMENT PROCEDURE:
1. REMOVETHETOPCOVER(UNIT),SETTHEPAI"I"ERNSELECTORDIALAT" _ "ANDSELECT
THE MAXIMUM ZIGZAG WIDTH.
2. LOOSEN THE TWO HEX-HEAD SETSCREWS ON THE UPPERSHAFTWORM GEAR.
3. WHILE HOLDING THE UPPER SHAFT WORM GEAR IN PLACE, CAREFULLY TURN THE
BALANCE WHEEL AND ADJUST SO THAT LATERAL NEEDLE SWING STARTS FROM A
POSITION 2 TO 3MM ABOVE THE NEEDLE PLATEIN RIGHT OUTFLOW.
4. TIGHTEN THETWO HEX-HEAD SETSCREWS ON THE UPPERSHAFT WORM GEAR.
5. AI_ACH THE TOP COVER (UNIT).
NOTE: FOR REMOVAL AND REPLACEMENT OF THE TOP COVER (UNIT), SEE PAGE 6.
AFTER ADJUSTMENT OF THE TIMING OF LATERAL NEEDLE SWING, MAKE SURE
THATTHEREISNO BACKLASH BETWEENTHEUPPERSHAFT WORM GEAR AND THE
OTHER GEAR AND THAT SMOOTH ROTATION ISOBTAINED.
HEX-HEADSETSCREW
GEAR
,_3 UPPER SHAFT
5 WORM GEAR
/
lhe bocklash Thebacklash
Isdecreased, isincreased.
(Note) 0
ff the uppershaft wormgear deviates
Ioterallywhen fuming the uppe
shaft,thebocldosh between the
geors willchange.
I 24_3MM
( Rightoutflow_
\ sta_"t pos_fion )
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