Are you talking about the lines that bend down right under the front edge of the cab? I can't believe that this would still be an issue in 2019: many folks have noted Kioti scrimping on the lines and or not including some sort of protective cover (as many folks have- though I have not [and after 425hrs I'm still fine, which is why I've left things as they are]) to deal with chaffing issues.
Yep, them ones, like MIE said.
If its a factory issue the dealer could easily add a protector of some sort. I picked up that woven kevlar tube to put over the line.
Does anyone have a parts list file for a 2018 NX5010? Trying to order parts online but they don't have breakdown for an NX.