You can find parts drawings and parts list for all Sears products at WWW.PARTSDIRECT.COM. In your case put in the model number, it is generally 10 digit number, shown as:
xxx.xxxxxxx
Put in the model number and the associated blow up diagram can help you disassemble your vacuum.
VACFIXER
May 2007
I can answer this question...
how do i take apart kenmore canister head to fix the roller is not moving?