I can not speak for your LX176, but on my old 111 it wasn't too bad. The operators manual said, "see dealer for service." That was certainly not necessary.
I took a comealong and lifted the front of the mower so I could work on it in a normal position. I THEN CHAINED THE TRACTOR AS WELL FOR SAFTEY!!! Comealongs are not rated for overhead lifting or life saftey, both applied in my situation. All it was from there was taking a bunch of pulleys and idlers, the steering, etc off.
YOU CAN DO IT!!!