How to fix stuck stitch selector knobs on a Singer Model 401A, 500A

KRUD KUTTER CLEANER/DEGREASER:https://www.rustoleum.com/product-cat... A do-it-yourself tutorial for fixing stuck selector knobs on the slant-o-matic models 401A and 500A. Usually, they are frozen or stuck because of dirt and dried oil. Here is where to oil and blow hot air to free them up. The knobs connect to a shaft with lifters and followers that need lubrication and cleaning. Do it yourself and get sewing again. A screwdriver, oil, and hairdryer can get things moving again. You can do this. 00:00 INTRO 03:40 SELECTOR KNOBS 04:50 SELECTOR SHAFT 05:25 LIFTERS/FOLLOWERS 07:30 DRIVING ARM PADDLE 10:25 OILING THE SHAFT & POSTS 16:38 USE HEAT 18:35 EXERCISE SHAFT 20:10 TRY TURNING A KNOB 22:25 ADD A LITTLE OIL 24:11 TURN OTHER KNOB 24:31 ADD A LITTLE OIL 25:35 LIFTER OPERATION 27:00 LOCKING ARM OPERATION 27:45 "SPECIAL" SETTING