model 5 C Ser # D001943
http://www.searspartsdirect.com/partsdirect/index.action
I did not find a manual but it seems that vendor number belongs to Husqvarna.
you can find a users manual or troubleshooting guide for the Homelite rototiller model HTC 12, on the Homelite website. Click on the Service and Support tab and then on Operators Manuals.
Google, plain out and simple.
You can find a manual for your Rally rear tine self perpelled Rototiller model RYX820K, manufactured by American Yard machines, on the American Yard machines website. You will find manuals for all of their products on the website.
You can find a user manual for your Craftsman rototiller on the official Craftsman website by navigating to the "Support" or "Manuals" section. Additionally, you can search for your specific model number to access the appropriate manual. Alternatively, websites like ManualsLib or eBay may also have downloadable versions of the manual. If needed, contacting Craftsman customer service can provide further assistance.
It was made by Roper. I also have been unable to find an owners or repair manual for mine, or any other information on it as well. I bought mine back in the '70s so it may be just too old to get info on.
You can find a Honda repair manual at most local libraries. You can also find the repair manual at most Honda dealerships.
There are many places that one could find a Rototiller for purchase. One popular place where you will be able to get advice on the best Rototiller for you would be Lowes.
call Sears warehouse and you can order one. Also check online as they may have it there.
You can find a free 1980 Suzuki GS 550 repair manual on the companies website. Many motorcycle parts websites have the repair manual.
This can vary widely. For most cars there is not an online repair manual immediately available. I would say that it would be rare to find a repair manual, especially a free one, online.