Deck only raises a little bit, not the way it is supposed to. Selections 1-4 is the same level, resting on the ground. how do i fix this

YOUL NEED TO REPLACE THE ENTIER HICH PIN SYSTEM THE BITS MIGHT BE COASTLY THOUGH SORRY ITS TOO SHORT TO ALINGE NOW NO WAY YOU COULD REATACH THE DECK SAFETLY UNLESS YOU GETVA QUalified welder to manufaturecyou a knew which PIN bit and a fix it etcetera.

1) NEVER adjust to where the deck wheels touch the ground. The wheels are to ride 1/4" off the ground. 2) The long lever to your left which raises & lowers the deck has 3 settings. 1- Fully back toward you which has the deck raised (called transport mode). 2- Halfway down which is the normal mowing mode (called float mode) 3- Fully away from you which sets the deck fully on the ground. This mode is ONLY used for VERY rough terrain where the deck risks getting pushed into "transport" or "full up" mode & getting stuck there. 3) On front-to-back tilt, the front should be 1/2inch lower than the back for least damage to the grass. Ok-now to adjust "cutting" height. 1) Park on a level, flat surface. 2) Pull the deck lever fully back toward you to put the deck into "transport" mode. 3) twist the "cutting" height knob (just below your seat) to the height you want the grass cut. Has choices by 1/2" increments from 1" to 3.5". The deck in "transport" mode is 4". 4) Lower the deck lever to the midway/"floating" mode point. 5) Adjust each deck wheel with its own peg & pin to have at least 1/4" clearance from ground. Thats it for "cutting height" adjustments
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call your deere dealer,
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Troubleshooting

Service Mower

cant find info for you,call dealer

There are two bolts that raise and lower the deck for adjustment on either side of the mower.

You need to verify the linkage for both sides is properly connected. You may have lost the pin holding the linkage together on one side, allowing the deck to stay on the ground.

First thing is to get down and look at the linkages. You may have a weld that came loose, or a nut that worked it's way off. You may also have something that bent.

Does the lever move all the way up but the deck doesn't move with it, or does the lever stick at the low level.

If it's sticking, you may just have picked up an obstruction like a stick or stone in the wrong place. You may also have a bent or damaged linkage.

Does one side or just the front or back lift up? One of the pins that hold the bars that it pivots on may have come off or broken as well. Looking underneath while someone works the lever for you can tell you a lot.

did the cables jump out of place from the little pulleys they ride on?

I've had to do this at least 5 times. If you look under the body, there are two supports that carry the mower deck and lift and lower it. Each of these has a nut that holds up the deck and the nut is on a stud that goes up and down when you raise or lower the lever. Put the deck in the middle of it's range, around #3, make sure the key is off, move your blades so they are on the right and left edge of the deck.
Get yourself a device to measure blade to ground height, I have a block of wood that is 3 inches long. Make sure your floor or ground is level and tires are properly pumped up. Then raise or lower the adjustment nuts until both sides are equal height.

Gary

you need to life the deck higher, your using it as a rotorvator not a good thing to do? try rolling the lawn flat as well,,

The linkage is not connected or is broken.

a mowing deck is suppose to be lower in th front than the rear usually 1/2" to 3/4" difference however if you need to adjust your deck you can go to www.deere .com and search for your owners manual and the procedures will be in the owners manual