The viewer from my other video asked about the non standard carb on my trimmers. Here is how I replaced the original TK carb.
This works wtih similar models also from the 70’s/early80’s from other brands (several identical motorsTK carb) such as Echo SRM-200da, Shindaiwa T25, Stihl fs61-65, FS51, FS81/86, (old) Green Machine, Kawasaki, Toro TC3000, among others.
This will also make fs6*, fs56, or any others with 1 fuel hose so you can run it upside down now.
I forgot to mention one tidbit which is that the Echo gas cap fits these old Stihls.
Abastecedora Parque y Jardín. Somos una empresa ubicada en Cuernavaca, Morelos, México. Contamos con herramientas y equipos, taller de servicio y refacciones Stihl.