Welcome to the site !!
Here is the Owners Manual , but it won't give ALL the engine specs , just mainly for top end replacement and clutch stuff , basically regular maintenance , but not for complete engine rebuild/teardown
https://www.manualslib.com/manual/78420 ... f250r.html
What I would highly recommend is to buy a Factory Honda Service Manual , they are only about $57.00 , it will give you ALL the specs you need and all the info you would need to do anything on your bike .... anything a Honda Service Tech at a dealer would do is in this manual
https://www.crfsonly.com/catalog/produc ... ts_id/3226 ......
The manual for the 07 covers from 04-09 , but unlike the Clymer or Haynes manuals , it is the actual Honda Service Manual done by Honda not someone in a local shop like Haynes or Clymer , and any specifics for your year bike are noted if something is different from another year , where the non OEM manuals are kind of vague about specifics
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