Maybe you fellows can help me.
I recently bought a GT 5000, 2004 model, with 25 hp Kohler and hydrostatic drive. It had a rough life, but is to be used as a back up.
I test drove it and everything was fine.
As I used it today, about 10 - 15 minutes in, the power cut out, it blew out some black smoke from the muffler. Immediately the clutch pedal was pushed and it cleared up in a second. It happened several other times, with no clear interval of time. The job I was doing was small, so I was able to finish and got it ready to be put away.
Gas is 91 octane non ethanol. I just put 5 gallons in. Tank was just about empty. Oil was med brown and full. It is still full each time I have checked it.
I plan to switch to full synthetic when I change air and oil filters.
Any ideas on the engine issue? I've never had that one yet. It would explain why the last owner let it go cheap.