Motor Belt Tension - Kenmore 385.16231400 Service Manual

SEWING MACHINE DIV.20 MODEL 385. 16231300
MECHANICAL ADJUSTMENT
MOTOR BELT TENSION
TO CHECK:
1. IF THE MOTOR BELT TENSION IS TOO TIGHT OR TOO LOOSE, IT MAY CAUSE THE
BELT TO MAKE NOISE.
A TOO TIGHT BELT TENSION CAN CAUSE THE MACHINE TO RUN SLOWLY AND WILL
OVERLOAD THE MOTOR; A TOO LOOSE MOTOR BELT TENSION, MAY CAUSE THE
BELT TEETH TO JUMP OVER THE PULLEY.
2. THE CORRECT MOTOR BELT TENSION IS ACHIEVED WHEN THE BELT IS PUSHED IN
ABOUT 7MM (0.28") - 9MM (0.36") UNDER A PRESSURE OF ABOUT 300 GRAMS.
ADJUSTMENT PROCEDURE:
1. REMOVE THE BELT COVER (SEE P.8).
2. LOOSEN SETSCREWS (A) AND (B).
3. MOVE THE MOTOR UP OR DOWN TO ADJUST THE DEFLECTION TO ABOUT 7MM
(0.28") - 9aM (0.36").
4. TIGHTEN SETSCREWS (A) AND (B).
(A)
(B)
- 300gLOAD
DEFLECTION 7-9 MM
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