It could be there was a problem with the internet connection or maybe the model information was not complete. You do need the actual model number and not just a model description. If you can't find the model number try finding your drill or one that matches the specs on Sears.com. Most of the time you can use the model information there and add a "315" before it. (Most drills need a 315 in front of the model info and a few use 113 or 170 or 172.)
For example, I did a search on Sears.com for "Craftsman 14.4 cordless drill" and used one of the model numbers, a 114530, to find a manual as follows.
On the Home page of Manage My Home, hold your mouse over the square labeled
in the upper left of the page. A drop-down menu will appear, choose the option
Products and manuals
For this model enter the following:
Type of Product
at the bottom of the page. Then choose the blue link for your product from the search results and it will open your manual for viewing online.
You can save a copy of the manual to your Home Profile or, on most computer systems, download or print the manual while you are viewing it.
If the manual can't be found, please call the Manage My Home Member Services Team at 1-800-803-6775, between 8 a.m. and 8 p.m. Central Time. They will be more than happy to help you track down the manual.