Those are sway chains, and will help keep the implement out of your tires.. but don't have anything to do with height. Check chains for height, are generally attatched to the lower lift arm pins where the implement attaches, or even closer at where the lift link and lower lift arm are joined, and then they travel up to a small bracket that is pinned rign on with the toplink, The chains hook into this bracket. You lift your 3pt lift up just a bit past where you want it to be.. set your chains, then relax the lift. The chains then control the lowest point the mower can travel, yet you can still lift your lift to get over obstacles. Check chains are good specifically for two situations.. where you don't have posiotion control hyds ( 9n / 2n / some fergy's ), and also if you have a weak or leaky lift.. you can lift your implement set the chains and then drive without the pto powered to 'travel' out to your pasture / wherever. Assuming your NAA lift was strong enough to tote the mower.. it is/was fine... your NAA along with 8n's have position control as well as draft control. Soundguy Soundguy
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