Engine zero turn Yard Machine wont pull hills

[dadsqlink]

I have a zero turn yard machine and this last year it started not pulling up even small hills. It even sometimes has a hard time on level ground and sometimes it don't give me any trouble and works just fine. when it does start acting up it makes a whining noise to me it sounds like low hydraulic fluid or something if any body has any ideas it would be appreciated

 

[lawn mower fanatic]

I don't know much about this kind of stuff, but I would suggest checking to see if the hydraulic fluid is low, since you think that is what it might be. If I had a problem, I would check what I think might be causing the problem, and then go from there.

 

[Rivets]

You don't say how old your unit is. Have you changed the belt in the last three years. Belt could be worn or stretched.

 

[dadsqlink]

I think its a 07 model. I have never replaced the drive belts on it may give it a try. Does anyone know what kind of fluid a ztr takes and how to check it?

 

[Rivets]

Please post your model numbers.

 

[dadsqlink]

I was wrong it is a 08 model. The model# is 17AA5AAG700 AND the serial# is 1A156G20005

 

[Rivets]

This manual might help you.

http://www.mymowerparts.com/pdf/MTD-Troybilt-Yardman-McCulloch-Parts-Manuals/17aa5aag766.pdf