My Ariens GT18 does not keep a constant speed, even on flat ground. Following the service manual procedure, I have tried to adjust the linkages, to no benefit. Any idea where to look or what might be wrong?
The hydro drive on my old (but new to me) Ariens GT18 comes to a gradual stop under a load, then takes off on a straightaway. I did the service manual routine to adjust it but only made it worse. Any advice for a newbie on how to proceed? I have checked hydro oil level, changed the filter and...