There are a few different ways that you can lower the deck on a John Deere z930m. The first way is to use the deck adjustment knob. This knob is located on the right side of the deck, near the front. To lower the deck, simply turn the knob clockwise.
Another way to lower the deck on a John Deere z930m is to use the deck levelers. These are located on the underside of the deck, near the rear. To lower the deck, simply turn the levelers clockwise.
The final way to lower the deck on a John Deere z930m is to use the deck height lever. This lever is located on the right side of the deck, near the rear. To lower the deck, simply push the lever down.
Whichever method you choose, always lower the deck slowly and evenly to avoid damaging the mower.