The present invention provides a method for manufacturing a dynamoelectric stator enabling coil ends to be impregnated with varnish simply and to a high fill factor by adjusting varnish viscosity at a temperature of a stator during varnish application to a predetermined range. The signal line extends at least partly in a first layer of a multi-layer printed circuit board. A locking grip is adjustably fixed to the handle and has a bottom end knob and a top end knob.