This may be the manual you need (there's a picture of the processor on the first page),
If it isn't, the www.gopresto.com
"Instruction manuals for many Presto® products are available for download. Updated instruction manuals will be added periodically. If you do not find an instruction manual for your product listed below, you may go to our online catalog to order an instruction manual through our shopping cart system (most instruction manuals are free), or call our Consumer Service Department at 1-800-877-0441 weekdays, between 8:00 a.m. and 4:30 p.m. Central Time. You may also write to:
CONSUMER SERVICE DEPARTMENT
National Presto Industries, Inc.
3925 North Hastings Way
Eau Claire, WI 54703-2209 "