Hi, can you see any signs of the icemaker leaking?
There is going to be one of two problems. One, the icemaker has a crack in it or the fill valve is letting in too much water.
you can take the icemaker out and fill with water. Hold it up and look for cracks, leaks.
It can be if you can get the icemaker at the right price, below $100.00
If no leaks, remove cover of ice maker and look for water adjust +or -
You have to look at how much a new one is compared to fix.
No manual that i am aware of. Should just be three screws.
Could be phillips or 1/4 inch nut driver.
Two on top and one on the bottom. some only have the two on top.
Then you just unplug the wire harness.
If no leak and you have adjustment screw, turn it a quater turn lower. if no adjustment, i would replace the fill valve on back of unit.
You too, Thank You.