A mulching mower should have at least 5 horsepower, preferably 6. If you take a look at some competitive mowers, you'll see some distinct differences in how they solve the problem of chopping up grass fine enough so that it disappears. Most manufacturers design the mower's deck and blade so that the clippings will be stirred up and cut several times before being blown back into the grass. Some manufacturers add baffles or fans to the inside of the deck to enhance the process. One manufacturer, Toro, equips their Recycler mower decks with specially designed deflectors to make it easier to cut through dense, damp grass and leaves.
Many dealers refuse to touch bargain-basement machines.
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