Thank you for your question. I can understand your concern about the water leak. This could be a problem with the icemaker itself or the water valve. This icemaker has some test terminals behind the front cover, that may help determine the cause of this problem. Pull the front cover off and you will see the terminals. Now, use a well insulated jumper and place it between the T & H terminals (see image). Be careful this is a hot (live) check. The icemaker should now start into a cycle and after approx. 12 seconds, remove the jumper. Toward the end of the cycle, it will fill with water. This should be a 7.5 second fill time. If the fill time is 7.5 seconds and if the water overfills the icemaker, the water valve # W10408179 will need to be replaced. If the fill time is longer then 7.5 seconds, there is an adjustment on the icemaker to reduce the fill time (see second image). If the fill time is still too long, the icemaker # 2198597 will need to be replaced. I hope this will help you. If you would like more assistance, reply to this thread and I will be glad to assist you further.
If you do not feel confident repairing this problem yourself, then you can have it repaired at your home by a Sears technician. Here is a link for the website:
Sears Home Services