I'm experiencing a loss of drive on my 48" Husqvarna. I've replaced the drive motion belt twice this season and have only mowed once since changing it last. Initially, it was better but it quickly got to the point it didn't want to move very fast at all. I looked in the owners manual and it said the hydrostatic transmission is serviced at the factory and sealed and didn't mention anything about a hydraulic reservoir yet i read another post where someone had mentioned servicing hydraulics. Any help would be appreciated. It has 300 hours
First of all, use only OEM belts
from a dealer or in the case of Craftsman, from Sears or direct OEM replacement belts from a lawn mower repair dealer.
If you are using a generic "hardware store" belt, chances are you are getting a "fractional horsepower belt" which is made for low torque electric motors and they will not withstand the torture a lawnmower puts on them.
When installing the new belt, make sure all pulleys are clean and have no bent spots, burrs or cuts in them. Make sure that any idler pulleys spin freely and also make sure that you get them on the correct side of any belt guards.
The transaxle IS a sealed unit and is not servicable There are no parts available for it and no parts lists. Your only remedy is to take it to a dealer to have it replaced if it is indeed defective
You can go to this link, click on support and download a manual for your model number which gives belt routing, parts listings and a lot of good information pertaining to your tractor:
http://www.husqvarna.com/us/homeowner/home/
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