Grsmith149 on Mar 09 2009 post got help on ...

grsmith149 on Mar 09 2009 post got help on a 1/3 hp vintage sears craftsman bench grinder. grsmith149's relay on his grinder was a klixon 4cr-20-724. The grinder I found at a yard sale is a 1/2 hp old sears craftsman bench grinder. The relay part # was klixon 4cr-20-728. My 1/2 hp grinder has no model# showing. There is a serial #715190453 on it. On the sticker one can just barely make out sears craftsman on the upper front sheet metal cover over the motor. I accessed the relay and it's a klixon relay# 4cr-20-728. I've exhausted all my bright search ideas. Does anyone know a good source for the 4cr-20-728 relay. And for that matter, wht the model# might have been for the 1/2 hp model?