I have pulled apart my lawnmower - my lawn mower 6.5 hp mower. I cleaned up all the parts and I was ready to reassemble. Out of nowhere a piece fell out - a washer - and I can't for the life of me figure out where the piece came from. I tried to find the manual for the carburetor online with no luck. Just wonder if anyone has a link to the manual for the carburetor for this. Thank you in advance.