I cant remember this verbatum, but in the manual, you need to adjust the belts with the variator in like notch 5. Its an easy step to miss. Those variator drives are neat, but are a pain to adjust.
I have a 212 also...check out this site: http://littlegreentractor.awardspace.com/index.html
I emailed the guy and he sent me .pdf files of everything I could ever need for my 212...including the service manual, my snowblower attachment manual, owner's manual, parts diagrams, etc. Good luck!