(ET) C-185 Speed Issue

[PH <pholzsc yahoo com>]

HI All ET EXPERTS,

My C-185 has performed almost flawlessly since 1985.  

But today when mowing, the top speed [pedal to the metal] seemed slightly slow.  

I pressed Cruse button and speed increased? 

Could the high speed pedal switch be bad or is this a diode issue or other issue?

Any advice is welcome.

Thanks,

Paul Holzschuher 

Cincinnati