Trimming and mowing time are cut down by this feature. When you are navigating uneven terrain or hills, the pivoting front axle, which is cast iron, will make maneuvring easier. The axle has a replaceable wear block, so you can restore it to good as new after you have used it for a while. The Briggs and Stratton Extended Life Series Single Cylinder OHV engine on the LT18538 is 18.5 hp, the least powerful engine of any Snapper lawn tractor. The 38" mowing deck is the smallest of any Snapper lawn tractor.