Needleswing - Kenmore 385.17126690 Service Manual

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 UPPER SHAFT WORM 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 PLATE IN RIGHT OUTFLOW.
4. TIGHTEN THE TWO HEX-HEAD SETSCREWS ON THE UPPER SHAFT 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
THAT THEREIS NO BACKLASH BETWEENTHE UPPER SHAFT WORM GEAR AND THE
OTHER GEAR AND THAT SMOOTH ROTATION IS OBTAINED.
HEX-HEADSETSCREW
GEAR
,_3 UPPER SHAFT
5 WORM GEAR
/
lhe bocklash Thebacklash
Isdecreased, is increased.
(Note) 0
ff the uppershaft worm gear deviates
Ioterally when fuming the uppe
shaft,the bocldosh between the
geors willchange.
I 24_3MM
( Rightoutflow_
\ sta_"t pos_fion )
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