It most definitly is strong enough to lift the front tires off the ground. And no it doesnt harm it at all, well maybe unless your doing it all day long all the time. Mines been lifting the tires for years when back grading or plowing snow in float.I would like to use my H120 in a downward force. Is this force strong enough to lift the front of the tractor (1025r) off the ground? Does it harm the H120 to use it in this fashion?
I'm wanting to split wood with it.Can you provide a bit more detail on how you intend to use the FEL with the front tires raised off the ground. Lifting the tires alone does not put any undue stress on the loader. But there are plenty of other activities that new tractor owners can unknowingly do that can cause excessive stress and even risk bending / breaking a hydraulic cylinder.
I'm wanting to split wood with it.
Kenny is correct unfortunately for you. The H120 has POUNDS (perhaps 500-1500) of downward force, a log splitter employs TONS (5-30T) of force to do its work, they are orders of magnitude in difference.You’ll need much more force than a small tractor can impose.