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Old 05-18-2011, 03:32 PM
hackitdown hackitdown is offline
LawnSite Silver Member
Join Date: Apr 2004
Location: Groton, MA
Posts: 2,431
Originally Posted by heather lawn sp View Post
Kubota ZD221 $10,368
Kubota ZG222 $7,754
Ok, it sounds like the cost to upgrade to a diesel on a 54" mower is $2,600. If I can save $400 per year on fuel (I am running 52" mowers...close enough comparison for me), the break even point is 6.5 years at my 350 hrs per year, or at about 2300 hrs.

I have to think that a gas mower with 2300 hrs is at or past the end of it's engine life. Assuming a diesel will go a lot more hours, then the payoff is really big after the break-even point. A gas engine swap is a couple of thousand dollars, and presumably the diesel will just keep running.

Or am I missing something?

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