PROBLEM FIXED--update. Called JD, they said there was a recall for this model and that they would have replaced the Transmission parts for free--BUT, because the previous owner did not service it at JD dealer before expiration, they would not help fix for free. I took a risk and bought the $60 drivetrains secondary pulley kit GT79244 and it is going up hills perfect now.
Will say that even though the RT400 transmission is plastic and this pulley and trans belt wore out after so few hours, the D105 is very easy to work on. Total time to drop trans and repair with reinstall 45 minutes. Thanks for your replies on this. Hope it helps others!
Will say that even though the RT400 transmission is plastic and this pulley and trans belt wore out after so few hours, the D105 is very easy to work on. Total time to drop trans and repair with reinstall 45 minutes. Thanks for your replies on this. Hope it helps others!