Honda 40 pt&t

[MinUph]

I have a 2006 Honda 40 hp. Is it possible to rebuild these? I don't know the part names for the seperate parts but I can explain. There is a hydraulic cylinder and another cylinder next to it that is rusted pretty bad. The unit still works but I'm thinking of repairing it before it goes. Is this an electrical part?
If pictures are required I will take some. Thanks
Paul