I have a Husqvarna LOGTH2448T and I've lost drive power. I've changed the drive belt and the oil and still not getting power, in fact it stops completely on the slightest of grades.

Hi,
You IPL is at:
http://www.husqvarna.com/ddoc/HUSI/HUSI2005_USen/HUSI2005_USen_I0502051_.pdf
And it uses a Hydrogear transaxle. If you see a filter on it, it is likely serviceable and will have a fill.
Peace,
Clarke