Motor Smokes Or Emits A Burning Smell; Motor Hums While Machine Is Not Sewing - Necchi Supernova Instructions Manual

Motor smokes or emits a burning smell.

Motor is overloaded due to excessive belt tension. Adjust belt
tension as advised above.
Motor is not oiled at all; wrong lubricant has been used; motor
is over oiled; oil on commentator. Have motor thoroughly clean
ed as suggested above.
Motor runs tightly due to bent shaft. Have motor repaired.
Motor runs noisily or groivls. Rattling noise during sewing.
Motor pulley is not in perfect alignment with balance wheel
of machine. Adjust motor pulley on motor shaft until belt runs
straight up to balance wheel.
Motor hums while machine is not sewing. Rheostat control
lever gets stuck in a depressed position. Check rheostat and
free the motion of the control lever.
Motor pulley is loose on motor shaft. Tighten screw in motor
pulley.
Motor bracket too loose on machine, or motor too loose on
motor bracket. Tighten firmly all fastening screws which hold
the above parts in place.
It must be emphasized that all motors on our machines are
carefully made, inspected and tested. Therefore, handle each
motor with care; do not dismantle or tamper with it, unless you
are thoroughly acquainted with its construction. Do not damage
or scratch the motor housing; do not drop the motor.
Do not make a motor entirely useless by unnecessarily damaging
it beyond repair.
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Copyright -2004