Good morning Jacko4,
You might find this link handy to determine the exact parts your are looking for and possible parts you may want/need in the future:-
http://www.briggsandstratton.com/us/en/support/manuals/results?NTT=281707-0184*
It's from the Briggs and Stratton website and has the Illustrated Parts List and Operators Manual for your specific engine model series available for download.
I use the B&S Website regularly when looking for information on their engines. As long as you have the Engine Model and Type, and it's recorded, then all is good.
Have a great day.
