I had a starter issue that I initially thought was the Clutch switch as I would pull the clutch in and out several times then it would fire up.
I pulled the unit apart, inside is just a sliding brass bar and a pair of contacts, I cleaned them and put it all back together with no avail
@R-III-R Turbo had an issue (can't remember what) with his switch, I sent him some drawings or photos of the inside, maybe he will get this note and respond with what I sent him.
Oh ! in the end it wasn't the switch, it was the starter relay under the R/H side cover that was the problem.