d-105 drive

[denharr]

i have a d-105 john deere been working fine about half way through my yard it started not being able to pull its self up a mild incline

 

[bertsmobile1]

If it was sudden then you have a problem with the drive belt which most likely will need to be replaced.
ake it off early in the morning because if it has been on there for a long time then some of the idler pulleys are probably due for replacement as well.