need help for a 401a
i found a 401a after searching for 6 mths for one they said it had been tested and i believed them so i cleaned it up and oiled it good well it runs like a turtle makes a beautiful stitch after about 3min it started smoking which believe was the motor heating up good now my questions are #1 why would it run so slow there was a lot of oil on the inside no drip pan #2 would a motor from t and s 700 series work in a 401a and #3 where could i get instructions for putting it in 401a, i have 2 touch and sews thanks for any info you might have