I would recommend going to the czt. You get bigger wheels and tires, adjuatable handles, 10mph from 6mph, but the big difference is you go to the 3400 tranny then the briggs cyclonic or fs kawa motor. Basically the 3100 tranny and fr kawa or courage pro motors are 800 to 1000 expected lifespans, to the 3400 tranny, and cyclonic or fs motors that are more 2800 expected lifespans on paper. For the $1000 extra you will get a motor and tranny designed to last twice as long or better. Blade tip speed is maximum government allowed for liability which is a hair under 19000rpms. Woth the zt i try and keep them around 3 acres a week for maximum use, any more than that i try to push into czt or outlaw range...
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