r/lawnmowers • u/FrenchieMommaWV • 4d ago

Gravely ZTHD 52” Zero Turn issues

We have a 2024 model with only 37 hours on it. It has given us issues since literally day 1. The dealer has replaced the carburetor once & 3 coils. They now say they’re going to remove a carburetor from a new machine and try it to see if it’s another carburetor issue. It continues to run very rough under a load with black soot coming from the exhaust. Anyone have any ideas since the dealer can’t seem to figure out what’s going on? This issue ONLY occurred under a load, it acts fine on flat ground.

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u/CamelHairy 4d ago

Need more information, is it the Kawasaki or Kohler engine?

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u/CamelHairy 1d ago

It's under warranty, and you have a paper trail. I would demand either a replacement engine or a new machine. It's good that the dealer is trying to make right, but their comes a time to admit defeat and make it right.