There is no aftermarket for this carburetor kit at this time. It is only available from Briggs & Stratton.
Owners and part manuals are available for Briggs.
Yes, it has an oil filter and the Briggs & Stratton part number is 492932S.
Briggs & Stratton part # 491056 NAPA filter # 1348
If you mean Briggs and Stratton model 193702, then you want Briggs Stratton Carburetor Part No. 491590 It costs less than $150 USD. Check out http://www.smallenginesuppliers.com or the Briggs and Stratton website.
It is a part of the camshaft.
briggs and stratton oil filter part no.696854 replaces 795890.
That is not a Briggs part#. 491056 is, as is 492932
If you know your part number of even model number, you can go to eReplacementParts.com for the Briggs and Stratton parts your looking for. The site features part lists for each engine or motor and includes thousands of detailed diagrams to help you replace the flywheel once you get it. All in all, they are a very good site for finding tool parts in general but for Briggs and Stratton parts, eReplacementParts is the place to go.
That is not the sears part number. Drain it and wash it out with mineral spirits and drain again. Reinstall two days later or go to a lawnmower shop or auto parts store and find one to replace it.
Briggs and Stratton part#697153 is for the air filter panel assembly (not oil). Fram does not have cross list replacement for this part number or application.
499489 is not a valid Briggs & Stratton part number. Air filter 499486 (superseded by 499486S) references to Oregon part number 30-032.