venator Report post Posted April 15, 2018 So my bobbin winder stopped working and I want to open her up and take a look. I can see the bolts to pull but do I need to do anything special? Or worry about the large knob on top for pressed foot height? Stu Quote Share this post Link to post Share on other sites
Uwe Report post Posted April 19, 2018 (edited) There are just four obvious bolts to remove on the top: The black dial knob can stay on. It has a spiral shape on the underside that pushes a spring loaded pin as you turn the knob. The pin may make a popping sound as you lift the top up. Below is a close-up of my bobbin winder unit. It may just need cleaning or the little black rubber ring may need to be replaced. The rubber ring on the bobbin winder presses against this disc in the picture below to spin. The position of the disc is adjustable on the shaft if need be to make better contact with the bobbin winder wheel. This disc has no other purpose than to drive the bobbin winder wheel - not much can go wrong here if you adjust its position. Clean the driver disc with acetone to make sure it's not slippery. When putting the top back on the pin shown below needs to go into this oblong slot under the black knob. Turn the black knob (clockwise to the right in the picture below) until the slot is totally open (spiral curve all the way down), otherwise it may be hard to align the spring-loaded pin above to rest against the spiral curve. Hope this helps! Edited April 19, 2018 by Uwe Quote Share this post Link to post Share on other sites
