This is about the thickest brush I have to deal with. It's easily within the Squealers limits of 1". 
I need to purchase a combination radio/hearing protector. More for the radio than hearing protection...The unit is quiet.
It's stingy on fuel. 5.2 hours and used a quarter tank. However, she's only running between 2000 and 2300 RPM during break-in. 
Bad things: No oil pressure gauge. I used to run commercial boats and that was THE gauge to watch. 
Idiot style water temp gauge. the tractor ran at 
"4 dots" regardless of outside temp. Note to RaT: What's yours run at? 
So far everything else seems fine. Time will tell.