Motor Belt Tension - Janome 502X Servicing Manual

MOTOR BELT TENSION

TO CHECK:
1. IF THE MOTOR BELT TENSION IS TOO TIGHT OR TOO LOOSE, IT MAY CAUSE BELT NOISE. ALSO, A
TOO TIGHT BELT TENSION CAN CAUSE THE MACHINE TO RUN SLOWLY AND WILL OVERLOAD
THE MOTOR.
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 PUSHES IN ABOUT 7 MM
(0.28") - 9 MM (0.36") UNDER A PRESSURE OF ABOUT 300 GRAMS.
ADJUSTMENT PROCEDURE:
1. REMOVE THE FRONT COVER. (SEE PAGE 7)
2. LOOSEN SETSCREWS (A).
3. MOVE THE MOTOR UP OR DOWN TO ADJUST THE DEFLECTION TO ABOUT 7 MM (0.28") - 9 MM
(0.36").
4. TIGHTEN SETSCREWS (A).
DEFRECTION 7 - 9 MM
MOTOR
MECHANICAL ADJUSTMENT
300g LOAD
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SETSCREWS (A)
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