Mickey2

One point commonly missed is where the presser bar (hollow rod) moves up and down in the black cast iron part of the body. It's obviously and oil point, but still frequently overlooked. The part that moves up and down with the presser bar lever need oil both inside and out side (I hope the description make sense). All moving parts behind the flaceplate needs oiling; all parts linking the presser bar lever to the tension release pin, jonts, hinges etc. Theres equivalent points on the needle bar. I don't use alcohol on the black cast iron parts, it will cause damage to the shellac, use oil, spray can oil for dissolving dirt and grime, but in general you get very far with the basic oil. My 99 became very smooth when I turned to teflon oil (like Triflow and Finish Line Ceramic Wet lube). The spring in the presser bar needs to be oiled too.