This is what i found when i took the carb off. Look at the page on the attachment.
http://www.ereplacementparts.com/wal...67_140808.html
Parts # 19 and 21 are missing.
This engine was bought new and I have never taken the carb apart.
And no I'm not afraid to tune a gas engine, I just hoped it would stay the same. It was tuned so good hate to start over
Dennis