I'd just be sure to look up the recall & see if the mower is subject to it or not
As for the decks, rust is the enemy & that's generally caused by stuff sticking to it & trapping moisture. Consider treating the deck with something to prevent that. I use Blaster Dry Lube with Teflon & that works great, but I have smaller mowers (a 21" and a 46") and am just mowing a large yard, not acres. People have been using a variety of sprays for this, just do a search on youtube & you'll find plenty to consider
As for the decks, rust is the enemy & that's generally caused by stuff sticking to it & trapping moisture. Consider treating the deck with something to prevent that. I use Blaster Dry Lube with Teflon & that works great, but I have smaller mowers (a 21" and a 46") and am just mowing a large yard, not acres. People have been using a variety of sprays for this, just do a search on youtube & you'll find plenty to consider