Singer Machines Running Sounds
I have several vintage Singer machines and there is quite a bit of difference in their running sounds. My 201 has a very, very quiet sound, my 15-91's are a bit noisier but my 99K seems to have the loundest and somewhat laborious sound. Is the noise difference due to the motors, or have I not oiled them properly. I have followed the manuals in every case for oiling points.