ECCENTRIC DESIGN CHANGE NOTES
This applies to 20, 20T, 30, 30S, 30SW, 30T, 30TW, 50, 50S, 50SW, 50T, 50TW, 50W, 80 (Int.), 80S, 80ST, 80STW, 80SW, 80T, 80TW, 80W
ANY of the models use these part #s
KNOWN PROBLEMS: (AS OF 6/10/22)
The older/thicker eccentric collars fit the original plastic knobs.
The Newer Thinner 113-50 collar WILL NOT fit on the older 112-50 PLASTIC eccentric knob. The plastic knob is coated to look like chrome but if you tap it gently you can tell that it is plastic.
112A-50 and the screw substitutions:
23-6CH This has longer screw threading and will NOT work on the older plastic knob.
* Click images to view larger size photo
** Double Starred parts are no longer available
SOURCING PARTS
You may be able to find these on eBay or other auction sites but make sure ALL THREE PARTS are matching types or they will not work.
See also our list of other places to find parts
https://scottsbt.zendesk.com/hc/en-us/articles/115000166543 in our Help Desk