SEWINGMACHINEDIV.20 MODEL385.17822490
MECHANICAL ADJUSTMENT
TOP TENSION
TO CHECK:
1. SETTHETENSION DIAL AT "3 *AND RAISETHEPRESSERFOOT.
2. PASSTHETHREAD (A) BEI_VEENTHEDISCS AND DRAW THETHREAD (A) DOWN AROUND
THE CHECK SPRING HOLDER AS IN FIG. 1.
3. LOWER THE PRESSERFOOT AND BRING THETHREAD (A) UP.
4. TOP TENSION SHOULD BE65 - 95g WHEN PULLING THETHREAD (A) UP IN THEDIRECTION
(B).
" USESOFTCoI-rON THREAD#50.
• IF ITISNOT WITHIN THEABOVE LIMITS,ADJUST AS FOLLOWS.
ADJUSTMENT PROCEDURE:
1. REMOVE FRONT COVER UNIT (SEEPAGE 9).
2. PULLSPRING (C) AWAY FROM THE LEAD SCREW (D).
3. IFTHETOP TENSION ISTOO LOOSE, TURN THELEAD SCREW (D) IN THE DIRECTION (E).
IFTHETOP TENSION ISTOO TIGHT, TURN THELEAD SCREW (D) IN THE DIRECTION (F).
(D) _ (C)
THREADTENSIONDIAL (3)
STRONG
(E) , (C)
(D)
PULL THISWAY
(13)
FIG.I
DETACH
11
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