[Trombone-l] about rotor mechanism

[Eric Swanson]

On May 8, 2009, at 9:59 PM, sinchi roca wrote:

> Hello, does anybody have diagrams o know where can i find or where  
> to search information of the rotor mechanism. I have a yamaha  
> YSL-3540R but i think that the spring ( inside the 'rotor'), if  
> there is one, it's not working, and i don't want to disassemble it.
>
>
>

Sinchi,

We don't have that model in the US, but I think Walter is right.  On  
every Yamaha I've ever seen the spring is on the trigger not on the  
valve itself.  You should be able to see it.

Eric Swanson