Any thoughts on converting a Stihl MS150 T C-E to use a 3/8 picco chain? The 3/8 picco chain is cheaper, matches my 193T, and the European parts diagram in the link below shows that there is an available 6T sprocket (part number 1146 640 2006 - Stihl Chain sprocket 3/8'' Picco 6T).
Parts diagram: https://www.diyspareparts.com/parts/stihl/diagrams/ms150tc-e/0787dfe8-5239-4b42-a88f/
Also, what is the thing next to the sprocket on this page? https://www.flexparts.de/original-E...6-640-2006-/-/-/-STIHL-Kettenrad-3/8-Picco-6Z
Thank you in advance.
Parts diagram: https://www.diyspareparts.com/parts/stihl/diagrams/ms150tc-e/0787dfe8-5239-4b42-a88f/
Also, what is the thing next to the sprocket on this page? https://www.flexparts.de/original-E...6-640-2006-/-/-/-STIHL-Kettenrad-3/8-Picco-6Z
Thank you in advance.