HRT216SDA Won't Start

Hi, I have a Honda HRT216SDA mower that's served me well over the years. It recently cut out on me and wouldn't start. I squirted some starting fluid into the engine through the carb and it started right up, so I figured it must be the carb. I took the carb apart and cleaned it, reassembled, still no go. I then bought a new carb since they're only about $20 on ebay, but after attaching it, it still won't start. Fuel is flowing from tank to carb fine, it just doesn't seem to be getting from carb to engine. Any thoughts? Thanks