Thanks.
The o-ring seal and plastic retaining ring were pre-installed in the engine side of the carb. I couldn't find a seating surface for that extra orange o-ring so I left if out when I installed the new carb. Started right up when I got done.
My BS manual for the 550E engine shows three parts when installing the carburetor on page 14, diagram 125 carb assy.
part #
623 - spacer
724 - retainer
617 - seal
The new carb came with the retainer and seal already installed in the carb. Another orange seal was included along with the carb...
Bought a power washer last year with a Briggs 550E, Model #09P702.124F1. Plastic carb, primer model. Used it once last year worked fine except when you stopped the engine you had to wait a few minutes before you could start it again. Put the engine in proper layup over the winter. Only ever...