Hello Kim,
It may well be the motor, I can't remember what the 402 looks like but if the motor is outside you can get replacement motor and control quite easily, if the motor is inside you can still get a replacement motor but it will mean taking the motor out and goiung to a sewing machine shop for an exact match, check the wires on the inside of the machine if the motor is inside.
Ken
drivewithken
December 2009
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