Riding lawn mowers

I have a 5’ Kees mower/Husquvarna and a Lazer Z-4’ both are zero turn, spindles are greasable belts, tires and once in a while a non greasable idler pulley will go bad but they are great mowers. I don’t mow with them all the time I have a neighbor that uses them when I can’t do it. I will never go back to the old tractor type