The GT275 was an excellent machine, and there are still many out there running in fine shape. I'm not knocking your machine, but I would like to pass on some information on this series for the original poster.
The early GT series with the black frame was basically an LX series frame with a heavier duty rear, which was it's achilles heel if you had a snowblower or snow blade.
The frame was known to crack and break in front of the rear wheels from the flexing caused by a snowblower or blade.
It seems the transmission was too strong, and the frame would fatigue and crack from the twisting caused by the weight of the front implement and constant changing of direction from forward to reverse while using a blower or blade.
We welded quite a few here at the shop for this very reason.
When looking to buy one of these, check for cracks on the frame. Also check and see if the frame had weld repair done to it.
The later GT series with the green frame could do this as well.
*My suggestion would be to look for a 325 (twin cylinder version, not the older single cylinder version), 335, or the water cooled 345 due to the size of lawn you are looking to mow.
Vigilant, I'm not knocking your machine! I'm only passing this info on for the original poster so he knows to look for that when viewing a used machine.
Hope this info helps, good luck!
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